Sample records for lighting control cxs

  1. Smart Lighting Controller!! Smart lighting!

    E-Print Network [OSTI]

    Anderson, Betty Lise

    1! Smart Lighting Controller!! #12;2! Smart lighting! No need to spend energy lighting the room if://blogs.stthomas.edu/realestate/2011/01/24/residential-real-estate-professionals-how-do-you- develop feedback! There is a connection between the output and the input! Therefore forces inputs to same voltage

  2. Adaptive Street Lighting Controls

    Broader source: Energy.gov [DOE]

    This two-partDOE Municipal Solid-State Street Lighting Consortium webinar focused on LED street lighting equipped with adaptive control components. In Part I, presenters Amy Olay of the City of...

  3. MANDATORY MEASURES INDOOR LIGHTING CONTROLS

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES INDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.1) #12;SECTION 4 MANDATORY LIGHTING CONTROLS 1. 130.1 (a) Area Controls: Manual controls that control lighting in each area separately 2. 130.1 (b) Multi-level Controls: Allow occupants to choose the appropriate light level for each

  4. MANDATORY MEASURES INDOOR LIGHTING CONTROLS

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES INDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.1) #12;SECTION 3 MANDATORY LIGHTING CONTROLS 1. 130.1 (a) Area Controls: Manual controls that control lighting in each area separately 2. 130.1 (b) Multi-level Controls: "Dimmability." Allow occupants to choose the appropriate light

  5. MANDATORY MEASURES INDOOR LIGHTING CONTROLS

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES INDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.1) #12;SECTION 5 MANDATORY LIGHTING CONTROLS 1. Area Controls: Manual controls that control lighting in each area separately 2. Multi-level Controls: Allow occupants to choose the appropriate light level for each area 3. Shut

  6. MANDATORY MEASURES OUTDOOR LIGHTING CONTROLS

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES OUTDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.2) #12;SECTION level of each multi-tier garage. · General lighting must have occupant sensing controls with at least one control step between 20% and 50% of design lighting power · No more than 500 watts of rated

  7. Northeast Energy Efficiency Partnerships: Advanced Lighting Controls...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Northeast Energy Efficiency Partnerships: Advanced Lighting Controls - 2015 Peer Review Northeast Energy Efficiency Partnerships: Advanced Lighting Controls - 2015 Peer Review...

  8. MANDATORY MEASURES OUTDOOR LIGHTING CONTROLS

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES OUTDOOR LIGHTING CONTROLS (Reference: Sub-Chapter 4, Section 130.2) #12;SECTION 5 Additions and Alterations Any alteration that increases the connected lighting load must meet all No measures required OUTDOOR LIGHTING11/20/2014 #12;SECTION 5 BACKLIGHT, UPLIGHT, AND GLARE (BUG) RATINGS

  9. LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL

    E-Print Network [OSTI]

    Verderber, R.R.

    2010-01-01T23:59:59.000Z

    REFERENCES Task Report to Lighting Systems Research,Berkeley Laboratory, "Lighting Control System Market1980). Task Report to Lighting Systems Research, Lawrence

  10. Lumental : web-based tunable lighting control

    E-Print Network [OSTI]

    Hall, Harrison King

    2012-01-01T23:59:59.000Z

    Dynamically adjusting the light spectrum of spectrum-tunable light fixtures promises significant energy savings over binary or incremental dimming control. To enable this level of controllability, lighting must evolve from ...

  11. Advanced Light Source control system

    SciTech Connect (OSTI)

    Magyary, S.; Chin, M.; Cork, C.; Fahmie, M.; Lancaster, H.; Molinari, P.; Ritchie, A.; Robb, A.; Timossi, C.

    1989-03-01T23:59:59.000Z

    The Advanced Light Source (ALS) is a third generation 1--2 GeV synchrotron radiation source designed to provide ports for 60 beamlines. It uses a 50 MeV electron linac and 1.5 GeV, 1 Hz, booster synchrotron for injection into a 1--2 GeV storage ring. Interesting control problems are created because of the need for dynamic closed beam orbit control to eliminate interaction between the ring tuning requirements and to minimize orbit shifts due to ground vibrations. The extremely signal sensitive nature of the experiments requires special attention to the sources of electrical noise. These requirements have led to a control system design which emphasizes connectivity at the accelerator equipment end and a large I/O bandwidth for closed loop system response. Not overlooked are user friendliness, operator response time, modeling, and expert system provisions. Portable consoles are used for local operation of machine equipment. Our solution is a massively parallel system with >120 Mbits/sec I/O bandwidth and >1500 Mips computing power. At the equipment level connections are made using over 600 powerful Intelligent Local Controllers (ILC-s) mounted in 3U size Eurocard slots using fiber-optic cables between rack locations. In the control room, personal computers control and display all machine variables at a 10 Hz rate including the scope signals which are collected though the control system. Commercially available software and industry standards are used extensively. Particular attention is paid to reliability, maintainability and upgradeability. 10 refs., 11 figs.

  12. Controls for Solid-State Lighting

    SciTech Connect (OSTI)

    Rubinstein, Francis

    2007-06-22T23:59:59.000Z

    This study predicts new hybrid lighting applications for LEDs. In hybrid lighting, LEDs provide a low-energy 'standby' light level while another, more powerful, efficient light source provides light for occupied periods. Lighting controls will allow the two light sources to work together through an appropriate control strategy, typically motion-sensing. There are no technical barriers preventing the use of low through high CRI LEDs for standby lighting in many interior and exterior applications today. The total luminous efficacy of LED systems could be raised by increasing the electrical efficiency of LED drivers to the maximum practically achievable level (94%). This would increase system luminous efficacy by 20-25%. The expected market volumes for many types of LEDs should justify the evolution of new LED drivers that use highly efficient ICs and reduce parts count by means of ASICs. Reducing their electronics parts count by offloading discrete components onto integrated circuits (IC) will allow manufacturers to reduce the cost of LED driver electronics. LED luminaire manufacturers will increasingly integrate the LED driver and thermal management directly in the LED fixture. LED luminaires of the future will likely have no need for separable lamp and ballast because the equipment life of all the LED luminaire components will all be about the same (50,000 hours). The controls and communications techniques used for communicating with conventional light sources, such as dimmable fluorescent lighting, are appropriate for LED illumination for energy management purposes. DALI has been used to control LED systems in new applications and the emerging ZigBee protocol could be used for LEDs as well. Major lighting companies are already moving in this direction. The most significant finding is that there is a significant opportunity to use LEDs today for standby lighting purposes. Conventional lighting systems can be made more efficient still by using LEDs to provide a low-energy standby state when lower light levels are acceptable.

  13. Portable lamp with dynamically controlled lighting distribution

    DOE Patents [OSTI]

    Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

    2001-01-01T23:59:59.000Z

    A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) arranged vertically with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum insures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. The lighting system may be designed for the home, hospitality, office or other environments.

  14. MANDATORY MEASURES OUTDOOR LIGHTING CONTROLS

    E-Print Network [OSTI]

    California at Davis, University of

    EXTERIOR SPACES COMPLY WITH TITLE 24 There are two major steps for exterior spaces to comply with Title 24 for exterior space. A space complies with these requirements if the actual lighting power used in the space. Backlight Backlight includes all illumination that is in the space between the ground and 80 degrees above

  15. Energy Conservation Utilizing Wireless Dimmable Lighting Control

    E-Print Network [OSTI]

    Agogino, Alice M.

    individual control service Easy to connect with other management systems #12;9 Energy Savings & User Lighting accounts for 25-30% of energy usage in building electrical systems Energy savings can be generated-space office Real occupants Dimmable linear fluorescent lights Energy usage monitoring and comparison

  16. Monitored lighting energy savings from dimmable lighting controls in

    E-Print Network [OSTI]

    , product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by its trade name, trademark 94720, USA Abstract Digital addressable, dimmable lighting controls were introduced to the US market

  17. Simulation for Pre-Visualizing and Tuning Lighting Controller Behavior

    E-Print Network [OSTI]

    Radke, Rich

    daylighting and lighting control algorithms for a given space. Keywords: smart buildings, smart lighting, glazing, and shading devices have been decided. This prevents the early exploration of lighting

  18. Quantifying National Energy Savings Potential of Lighting Controls in

    E-Print Network [OSTI]

    Quantifying National Energy Savings Potential of Lighting Controls in Commercial Buildings Alison of Lighting Controls in Commercial Buildings Alison Williams, Barbara Atkinson, Karina Garbesi and Francis savings. Researchers have been quantifying energy savings from lighting controls in commercial buildings

  19. Sandia Energy - Control of Strong Light-Matter Coupling Using...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Control of Strong Light-Matter Coupling Using the Capacitance of Metamaterial Nanocavities Home Highlights - Energy Research Control of Strong Light-Matter Coupling Using the...

  20. Lighting Controls | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomy and Emissions Estimates | Department ofControls

  1. LIGHTING RESEARCH PROGRAM Project 5.4 DALI Lighting Control Device Standard

    E-Print Network [OSTI]

    LIGHTING RESEARCH PROGRAM Project 5.4 DALI Lighting Control Device Standard Development FINAL CONTROL DEVICE STANDARD PROPOSED BY NEMA ......10 TECHNICAL ASSESSMENT REPORT Electronics Co.; Al Lombardi, Leviton Manufacturing Co., Inc.; Mike Stein, Universal Lighting Technologies

  2. LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL

    SciTech Connect (OSTI)

    Verderber, R.R.; Rubinstein, F.

    1982-09-01T23:59:59.000Z

    This study describes the impact of lighting management systems that dynamically control lights in accordance with the needs of occupants. Various control strategies are described: scheduling, tuning, lumen depreciation, and daylighting. From initial experimental results, the energy savings provided by each of the above strategies are estimated to be 26, 12, 14, and 15%, respectively. Based upon a cost of $0.05-0.10 per kWh for electric energy and a 2-, 3-, or 4-yr payback, target costs for a simple and a sophisticated lighting management system are found to be $0.24 and 1.89 per ft{sup 2}, respectively, for a cost-effective investment. A growth model, based upon an extrapolation of the increase in building stock since 1975, indicates that the commercial and industrial (C and I) building stock will grow from 40 x 10{sup 9} ft{sup 2} in 1980 to about 67 x 10{sup 9} ft{sup 2} by the year 2000. Even with the use of more efficient lighting components, the energy required for this additional C and I stock will be 307 x 10{sup 9} kWh, an increase of only 13 x 10{sup 9} kWh above current use. The specified information is used to analyze the economic impacts that using these systems will have on the lighting industry, end users, utility companies, and the nation's economy. A $1 - 4 x 10{sup 9} annual lighting control industry can be generated, creating many jobs. The estimated return on investment (ROI) for controls for end users would be between 19 and 38%. Utilities will be able to make smaller additions to capacity and invest less capital at 7-10% ROI. Finally, the annual energy savings, up to $3.4 x 10{sup 9} for end users and about $5 x 10{sup 9} for utilities, representing unneeded generating capacity, will be available to capitalize other areas of the economy.

  3. Controlling X-rays With Light

    SciTech Connect (OSTI)

    Glover, Ernie; Hertlein, Marcus; Southworth, Steve; Allison, Tom; van Tilborg, Jeroen; Kanter, Elliot; Krassig, B.; Varma, H.; Rude, Bruce; Santra, Robin; Belkacem, Ali; Young, Linda

    2010-08-02T23:59:59.000Z

    Ultrafast x-ray science is an exciting frontier that promises the visualization of electronic, atomic and molecular dynamics on atomic time and length scales. A largelyunexplored area of ultrafast x-ray science is the use of light to control how x-rays interact with matter. In order to extend control concepts established for long wavelengthprobes to the x-ray regime, the optical control field must drive a coherent electronic response on a timescale comparable to femtosecond core-hole lifetimes. An intense field is required to achieve this rapid response. Here an intense optical control pulse isobserved to efficiently modulate photoelectric absorption for x-rays and to create an ultrafast transparency window. We demonstrate an application of x-ray transparencyrelevant to ultrafast x-ray sources: an all-photonic temporal cross-correlation measurement of a femtosecond x-ray pulse. The ability to control x-ray/matterinteractions with light will create new opportunities at current and next-generation x-ray light sources.

  4. Control of Light-matter Interaction Using Dispersion Engineered...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and non-classical light sources using quantum dots, metamaterials for controlling light-matter interaction, and engineered nonlinear optical materials using hybrid nanocomposites...

  5. Shulman Auditorium Lectern The CRESTRON system controls the lights,

    E-Print Network [OSTI]

    Capdeboscq, Yves

    Shulman Auditorium Lectern The CRESTRON system controls the lights, blinds, louvres, projector. The College crest now appears. Touch the screen to continue Lights and Blinds (and Louvres) control panel Select what type of lighting you need. For a laptop presentation we recommend: Lights = Present Louvres

  6. LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL

    E-Print Network [OSTI]

    Verderber, R.R.

    2010-01-01T23:59:59.000Z

    Floors Floor Area Lighting Power Density Light Output Lampenergy den- sity and power density for lighting to 3.5 kWh/Lighting Level (Lumens/Watt) (Footcandles) Power Density (

  7. Lighting Control Design | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and WindLighting Control Design Jump to: navigation, search Name:

  8. Lighting Controls/Sensors | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners and WindLighting Control Design Jump to: navigation, search

  9. A Meta-Analysis of Energy Savings from Lighting Controls

    E-Print Network [OSTI]

    A Meta-Analysis of Energy Savings from Lighting Controls in Commercial Buildings Alison Williams;ABSTRACT Researchers have been quantifying energy savings from lighting controls in commercial buildings and Garbesi 2011). Lighting represents approximately one-third of electricity use in commercial buildings

  10. Deficiencies of Lighting Codes and Ordinances in Controlling Light Pollution from Parking Lot Lighting Installations

    E-Print Network [OSTI]

    Royal, Emily

    2012-05-31T23:59:59.000Z

    The purpose of this research was to identify the main causes of light pollution from parking lot electric lighting installations and highlight the deficiencies of lighting ordinances in preventing light pollution. Using an industry-accepted lighting...

  11. Model Specification for Networked Outdoor Lighting Control Systems

    Broader source: Energy.gov [DOE]

    The DOE Municipal Solid-State Street Lighting Consortium's Model Specification for Networked Outdoor Lighting Control Systems is a tool designed to help cities, utilities, and other local agencies...

  12. Using Light to Control How X Rays Interact with Matter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Using Light to Control How X Rays Interact with Matter Print Schemes that use one light pulse to manipulate interactions of another with matter are well developed in the...

  13. A Systems Integration Approach To Lighting Control Systems

    E-Print Network [OSTI]

    Lynch, S.; Renner, R. A.

    2000-01-01T23:59:59.000Z

    Today, the lighting industry is experiencing renewed development and implementation of advanced technologies. One of the most striking advances is the implementation of system solutions in lighting control. This approach promises to contribute...

  14. Shedding light on Nature's nanoscale control of solar energy...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    light on Nature's nanoscale control of solar energy July 30, 2012 Tweet EmailPrint Across billions of years of evolution, nature has retained a common light-absorbing hexameric...

  15. Experiential lighting : development and validation of perception-based lighting controls

    E-Print Network [OSTI]

    Aldrich, Matthew (Matthew Henry)

    2014-01-01T23:59:59.000Z

    Lighting, and its emergence as a digital and networked medium, represents an ideal platform for conducting research on both sensor and human-derived methods of control. Notably, solid-state lighting makes possible the ...

  16. Quantum control and manipulations with stationary three-color lights

    E-Print Network [OSTI]

    S. A. Moiseev; B. S. Ham

    2006-01-04T23:59:59.000Z

    A dynamic quantum control of three-color lights in an optically dense medium is presented. We discuss how effectively to stop traveling three-color light pulses in the medium by using three control laser fields at near resonant transitions satisfying electromagnetically induced transparency. This opens a door to the quantum coherent control of multiple traveling light pulses for quantum memory and quantum switching, which are essential components in multi-party quantum optical communications.

  17. How to Select Lighting Controls for Offices and Public Buildings

    Broader source: Energy.gov (indexed) [DOE]

    Controls For Offices and Public Buildings LT-8 PAGE 1 DECEMBER 2000 Definitions Daylight dimming employs sensors that detect ambient light levels and then allow ballasts to...

  18. Evaluation of Alternative Field Buses for Lighting Control Applications

    E-Print Network [OSTI]

    Koch, Ed; Rubinstein, Francis

    2005-01-01T23:59:59.000Z

    2003, Jose Gutierrez, Eaton Corporation March 22, 2005 PageBuses for Lighting Control Applications Eaton CorporationEaton Corporation is a global $7.3 billion diversified

  19. Quantifying National Energy Savings Potential of Lighting Controls in Commercial Buildings

    E-Print Network [OSTI]

    Williams, Alison

    2013-01-01T23:59:59.000Z

    Performance of Occupancy-Based Lighting Control Systems: AReview. Lighting Residential Technology 42:415-431. Itron,Information Template Indoor Lighting Controls. Pacific Gas

  20. The Advantages of Highly Controlled Lighting for Offices and Commercial

    E-Print Network [OSTI]

    LBNL-2514E The Advantages of Highly Controlled Lighting for Offices and Commercial Buildings F for Offices and Commercial Buildings Francis Rubinstein and Dmitriy Bolotov, Lawrence Berkeley National 25% of the electrical energy used in US commercial buildings (DOE 2007). Advanced lighting controls

  1. Improving the performance of photo-electrically controlled lighting systems

    SciTech Connect (OSTI)

    Rubinstein, F.; Ward, G.; Verderber, R.

    1988-08-01T23:59:59.000Z

    The ability of a photo-electrically controlled lighting system to maintain a constant total light level on a task surface by responding to changing daylight levels is affected by the control algorithm used to relate the photosensor signal to the supplied electric light level and by the placement and geometry of the photosensor. We describe the major components of a typical control system, discuss the operation of three different control algorithms, and derive expressions for each algorithm that express the total illuminance at the task as a function of the control photosensor signal. Using a specially-designed scale model, we measured the relationship between the signal generated by various ceiling-mounted control photosensors and workplane illuminance for two room geometries under real sky conditions. The measured data were used to determine the performance of systems obeying the three control algorithms under varying daylight conditions. Control systems employing the commonly-used integral reset algorithm supplied less electric light than required, failing to satisfy the control objective regardless of the control photosensor used. Systems employing an alternative, closed-loop proportional control algorithm achieved the control objective under virtually all tested conditions when operated by a ceiling-mounted photosensor shielded from direct window light.

  2. Phase controlled light switching at low power levels

    E-Print Network [OSTI]

    Hoonsoo Kang; Gessler Hernandez; Jiepeng Zhang; Yifu Zhu

    2005-10-05T23:59:59.000Z

    We report experimental observations of interference between three-photon and one-photon excitations, and phase control of light attenuation/transmission in a four-level system. Either constructive interference or destructive interference can be obtained by varying the phase and/or frequency of a weak control laser. The interference enables absorptive switching of one field by another field at different frequencies and ultra-low light levels.

  3. The Advantage of Highly Controlled Lighting for Offices and Commercial Buildings

    E-Print Network [OSTI]

    Rubinstein, Francis

    2010-01-01T23:59:59.000Z

    of Highly Controlled Lighting for Offices and Commercialefficient, customized lighting for open-office cubicles.s ambient and task lighting components, 2) occupancy

  4. Lighting Control Types | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil & Gas »ofMarketing | Department ofEnergy NuclearLighting

  5. PERFORMANCE MODELING OF DAYLIGHT INTEGRATED PHOTOSENSOR- CONTROLLED LIGHTING SYSTEMS

    E-Print Network [OSTI]

    S. Jain; R. R. Creasey; J. Himmelspach; K. P. White; M. Fu; Richard G. Mistrick

    Some building energy codes now require the incorporation of daylight into buildings and automatic photosensor-controlled switching or dimming of the electric lighting system in areas that receive daylight. This paper describes enhancements to the open-source Daysim daylight analysis software that permit users to model a photosensor control system as it will perform in a real space, considering the directional sensitivity of the photosensor, its mounting position, the space and daylight aperture geometry, window shading configuration; the electric lighting equipment and control zones; exterior obstructions; and site weather conditions. System output includes assessment of the daylight distribution in a space throughout the year, the photosensors ability to properly track the daylight and modify electric lighting system output, and the energy savings provided by the modeled control system. The application of daylight coefficients permits annual simulations to be conducted efficiently using hourly or finer weather data time increments. 1

  6. CALIFORNIA LIGHTING TECHNOLOGY CENTER UNIVERSITY OF CALIFORNIA, DAVIS CLTC.UCDAVIS.EDU New requirements for lighting controls constitute one

    E-Print Network [OSTI]

    California at Davis, University of

    CALIFORNIA LIGHTING TECHNOLOGY CENTER UNIVERSITY OF CALIFORNIA, DAVIS CLTC.UCDAVIS.EDU New requirements for lighting controls constitute one of the biggest changes to Title 24 standards. The latest of controls commissioning. All lighting control systems with two or more components --in both residential

  7. Electrochromic control of thin film light scattering

    SciTech Connect (OSTI)

    Lindstroem, T.; Kullman, L.; Roennow, D.; Ribbing, C.; Granqvist, C.G. [Department of Technology, Uppsala University, P.O. Box 534, S-752 21, Uppsala (Sweden)] [Department of Technology, Uppsala University, P.O. Box 534, S-752 21, Uppsala (Sweden)

    1997-02-01T23:59:59.000Z

    Total and diffuse reflectance spectra were measured on Al surfaces covered with electrochromic W oxide films in colored and bleached states. Vector perturbation theory was used for analyzing the spectra. The diffuse reflectance appeared to originate from correlated (uncorrelated) interface roughness when the W oxide film was fully colored (bleached). Assuming partially correlated interfaces led to agreement between experimental and calculated spectra. The use of an electrochromic film appears a promising method to control the relative contributions of the interfaces to the resulting scattering. {copyright} {ital 1997 American Institute of Physics.}

  8. Manipulating Light Pulses via Dynamically Controlled Photonic Bandgap

    E-Print Network [OSTI]

    A. Andre; M. D. Lukin

    2002-05-13T23:59:59.000Z

    When a resonance associated with electromagnetically induced transparency (EIT) in an atomic ensemble is modulated by an off-resonant standing light wave, a band of frequencies can appear for which light propagation is forbidden. We show that dynamic control of such a bandgap can be used to coherently convert a propagating light pulse into a stationary excitation with non-vanishing photonic component. This can be accomplished with high efficiency and negligble noise even at a level of few-photon quantum fields thereby facilitating possible applications in quantum nonlinear optics and quantum information.

  9. Design of a Personalized Lighting Control System Enabled by a Space Model

    E-Print Network [OSTI]

    Suter, G.; Petrushevski, F.; Sipetic, M.

    2011-01-01T23:59:59.000Z

    This paper reports on a research effort to develop a prototype of a personalized lighting control system that adjusts the visual environment based on user preferences. Lighting controllers query a space model to retrieve lighting objects...

  10. A Software System for Modeling and Controlling Accelerator Physics Parameters at the Advanced Light Source

    E-Print Network [OSTI]

    Schachinger, L.C.

    2011-01-01T23:59:59.000Z

    and Controlling Accelerator Physics Parameters at theLight Source for accelerator physics studies and accelerator

  11. Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan

    E-Print Network [OSTI]

    LBNL-3831E Achieving Energy Savings with Highly- Controlled Lighting in an Open-Plan Office Author-Controlled Lighting 1 of 50 April 19, 2010 Achieving Energy Savings with Highly-Controlled Lighting in an Open Berkeley National Laboratory #12;Highly-Controlled Lighting 2 of 50 April 19, 2010 DISCLAIMER This document

  12. Herbivores and nutrients control grassland plant diversity via light limitation.

    SciTech Connect (OSTI)

    Borer, Elizabeth T. [Department of Ecology, Evolution, and Behavior, University of Minnesota; et al, et al

    2014-01-01T23:59:59.000Z

    Human alterations to nutrient cycles1,2 and herbivore communities37 are affecting global biodiversity dramatically2. Ecological theory predicts these changes should be strongly counteractive: nutrient addition drives plant species loss through intensified competition for light, whereas herbivores prevent competitive exclusion by increasing ground-level light, particularly in productive systems8,9. Here we use experimental data spanning a globally relevant range of conditions to test the hypothesis that herbaceous plant species losses caused by eutrophication may be offset by increased light availability due to herbivory. This experiment, replicated in 40 grasslands on 6 continents, demonstrates that nutrients and herbivores can serve as counteracting forces to control local plant diversity through light limitation, independent of site productivity, soil nitrogen, herbivore type and climate. Nutrient addition consistently reduced local diversity through light limitation, and herbivory rescued diversity at sites where it alleviated light limitation. Thus, species loss from anthropogenic eutrophication can be ameliorated in grasslands where herbivory increases ground-level light.

  13. CONTROLLED SCATTERING OF LIGHT WAVES: OPTIMAL DESIGN OF DIFFRACTIVE OPTICS

    E-Print Network [OSTI]

    Dobson, David C.

    CONTROLLED SCATTERING OF LIGHT WAVES: OPTIMAL DESIGN OF DIFFRACTIVE OPTICS DAVID C. DOBSON 1. Introduction. Di ractive optics is a vigorously growing technol- ogy in which optical components functions unattainable with conventional optics. These devices have great advantages in terms of size

  14. Optimal Demand Response Capacity of Automatic Lighting Control

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    . To remedy this problem, different demand side management programs have been proposed to shape the energy prior studies have extensively studied the capacity of offering demand response in buildings and office buildings. Keywords: Demand response, automatic lighting control, commercial and office buildings

  15. A Meta-Analysis of Energy Savings from Lighting Controls in Commercial Buildings

    E-Print Network [OSTI]

    Williams, Alison

    2012-01-01T23:59:59.000Z

    lighting in existing non-residential buildings: a comparisonComparison of control options in private offices in an advanced lightingLighting Energy Only Actual Installation Only Fig. 7. Comparison

  16. Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Office

    E-Print Network [OSTI]

    Rubinstein, Francis

    2010-01-01T23:59:59.000Z

    If you could change the lighting in your office, what wouldapply. Highly-Controlled Lighting 50 of 50 April 19, 2010Europa 2009, 11th European Lighting Conference, Istanbul,

  17. Simulating the operation of photosensor-based lighting controls

    SciTech Connect (OSTI)

    Ehrlich, Charles; Papamichael, Konstantinos; Lai, Judy; Revzan, Kenneth

    2001-02-15T23:59:59.000Z

    Energy savings from the use of daylighting in commercial buildings are realized through implementation of photoelectric lighting controls that dim electric lights when sufficient daylight is available to provide adequate workplane illumination. The dimming level of electric lighting is based on the signal of a photosensor. Current simulation approaches for such systems are based on the questionable assumption that the signal of the photosensor is proportional to the task illuminance. This paper presents a method that simulates the performance of photosensor controls considering the acceptance angle, angular sensitivity, placement of the photosensor within a space, and color correction filter. The method is based on the multiplication of two fisheye images: one generated from the angular sensitivity of the photosensor and the other from a 180- or 360-degree fisheye image of the space as ''seen'' by the photosensor. The paper includes a detailed description of the method and its implementation, example applications, and validation results based on comparison with measurements in an actual office space.

  18. Combustion Control Using Infrared and Visible Light Devices

    E-Print Network [OSTI]

    Lewis, S. E.

    1981-01-01T23:59:59.000Z

    by the boiler controller, while other heat inputs and useful heat outputs which remain relatively constant can be entered on the control panel. Wasteful heat output such as stack losses are not to be included; only useful heat outputs such as space heating... to the boiler controller at the speed of light, time lag in the combustion analysis system is 78 7.69 6.41 5.13 3.85 2.56 1.28 reduced to nil. Thus, the infrared flame monitor 79 8.86' 7.59 6.33 5.06 3.80 2.S3 1.27 ing system is capable of holding...

  19. Evaluation of Alternative Field Buses for Lighting ControlApplications

    SciTech Connect (OSTI)

    Koch, Ed; Rubinstein, Francis

    2005-03-21T23:59:59.000Z

    The Subcontract Statement of Work consists of two major tasks. This report is the Final Report in fulfillment of the contract deliverable for Task 1. The purpose of Task 1 was to evaluate existing and emerging protocols and standards for interfacing sensors and controllers for communicating with integrated lighting control systems in commercial buildings. The detailed task description follows: Task 1. Evaluate alternative sensor/field buses. The objective of this task is to evaluate existing and emerging standards for interfacing sensors and controllers for communicating with integrated lighting control systems in commercial buildings. The protocols to be evaluated will include at least: (1) 1-Wire Net, (2) DALI, (3) MODBUS (or appropriate substitute such as EIB) and (4) ZigBee. The evaluation will include a comparative matrix for comparing the technical performance features of the different alternative systems. The performance features to be considered include: (1) directionality and network speed, (2) error control, (3) latency times, (4) allowable cable voltage drop, (5) topology, and (6) polarization. Specifically, Subcontractor will: (1) Analyze the proposed network architecture and identify potential problems that may require further research and specification. (2) Help identify and specify additional software and hardware components that may be required for the communications network to operate properly. (3) Identify areas of the architecture that can benefit from existing standards and technology and enumerate those standards and technologies. (4) Identify existing companies that may have relevant technology that can be applied to this research. (5) Help determine if new standards or technologies need to be developed.

  20. Feedback control of the squeezing of the fluorescence light

    E-Print Network [OSTI]

    Alberto Barchielli; Matteo Gregoratti

    2009-10-09T23:59:59.000Z

    Among the formulations of the theory of quantum measurements in continuous time, quantum trajectory theory is very suitable for the introduction of measurement based feedback and closed loop control of quantum systems. In this paper we present such a construction in the concrete case of a two-level atom stimulated by a coherent, monochromatic laser. In particular, we show how fast feedback \\`a la Wiseman and Milburn can be introduced in the formulation of the theory. Then, the spectrum of the free fluorescence light is studied and typical quantum phenomena, squeezing and sub-natural line-narrowing, are presented.

  1. Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building

    E-Print Network [OSTI]

    Fernandes, Luis L.

    2014-01-01T23:59:59.000Z

    A. , DHerdt, P. , 2008, Lighting energy savings in officesLux Europa, 11 th European Lighting Conference, Istanbul,evaluation of the dimmable lighting, automated shading, and

  2. Energy efficient control of polychromatic solid state lighting using a sensor network

    E-Print Network [OSTI]

    Paradiso, Joseph A.

    Motivated by opportunities in smart lighting, energy efficiency, and ubiquitous sensing, we present the design of polychromatic solid-state lighting controlled using a sensor network. We developed both a spectrally tunable ...

  3. Lighting energy savings potential of split-pane electrochromic windows controlled for

    E-Print Network [OSTI]

    LBNL-6152E Lighting energy savings potential of split- pane electrochromic windows controlled potential of split-pane electrochromic windows controlled for daylighting with visual comfort L was conducted to evaluate lighting energy savings of split-pane electrochromic (EC) windows controlled

  4. Energy efficient control of polychromatic solid-state lighting using a sensor network

    E-Print Network [OSTI]

    Energy efficient control of polychromatic solid-state lighting using a sensor network Matthew in smart lighting, energy efficiency, and ubiquitous sensing, we present the design of polychromatic solid-state energy. Keywords: Solid state lighting, energy efficiency, sensor networks, optimization, spectral

  5. A Meta-Analysis of Energy Savings from Lighting Controls in Commercial Buildings

    E-Print Network [OSTI]

    Williams, Alison

    2012-01-01T23:59:59.000Z

    daylighting control for low energy buildings. Proceedings ofAIVC Conference on Building Low Energy Cooling and Advancedlow, federal energy conservation standards do not include lighting controls, and state and local building

  6. Controls for Solid-State Lighting Final Report

    E-Print Network [OSTI]

    National Energy Technology Laboratory and James Brodrick Building Technologies Program Office of Energy-State Lighting Final Report Prepared for: Joel Chaddock National Energy Technology Laboratory and James Brodrick

  7. Spin Wave Diffraction Control and Read-out with a Quantum Memory for Light

    E-Print Network [OSTI]

    Gabriel Htet; David Gury-Odelin

    2015-01-06T23:59:59.000Z

    A scheme for control and read-out of diffracted spins waves to propagating light fields is presented. Diffraction is obtained via sinusoidally varying lights shifts and ideal one-to-one mapping to light is realized using a gradient echo quantum memory. We also show that dynamical control of the diffracted spin waves spatial orders can be implemented to realize a quantum pulse sequencer for temporal modes that have high time-bandwidth products. Full numerical solutions suggest that both co-propagating and couterpropagating light shift geometries can be used, making the proposal applicable to hot and cold atomic vapours as well as solid state systems with two-level atoms.

  8. Combustion Control Using Infrared and Visible Light Devices

    E-Print Network [OSTI]

    Lewis, S. E.

    1981-01-01T23:59:59.000Z

    Economics and overall experience have acted against the installation of infrared carbon monoxide or carbon dioxide analyzers on smaller systems for air fuel ratio control. This paper discusses an interesting control signal which can be derived from...

  9. Danny Byrd Controlling Lights with PWM and Motion Detectors

    E-Print Network [OSTI]

    Kachroo, Pushkin

    been used to save power by turning off a light when no motion is detected for many decades now. Just a machine that will taper down the power consumption as time goes by, saving energy by the second to shine will slowly slowed, saving energy in the meantime. Though it will not be a huge save in energy

  10. Continuous Controls: Lighting Energy Management for Retrofit and New Construction Projects

    E-Print Network [OSTI]

    Schuett, R.

    1985-01-01T23:59:59.000Z

    The rising interest of specifiers and end-users in Lighting Energy Management (LEM) control equipment has led to an increased need for further education in the selection, capabilities and applications of such equipment. This paper addresses...

  11. Municipal Consortium Releases Updated Model Specification for Networked Outdoor Lighting Control Systems

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Municipal Solid-State Street Lighting Consortium (MSSLC) has released an update to its Model Specification for Adaptive Control and Remote Monitoring of LED Roadway...

  12. The Effect of Personal Lighting Controls on Energy use and Occuplant Weel-Being in Offices

    E-Print Network [OSTI]

    Veitch, J. A.; Newsham, G. R.; Mancini, S.; Arsenault, C.

    2013-01-01T23:59:59.000Z

    The effect of personal lighting controls on d t ll b i i ffi Jennifer A Veitch Guy R Newsham energy use an occupan we - e ng n o ces . , . , Sandra Mancini, Chantal Arsenault Building the Evidence ? Highly-controlled laboratory studies 15...?yrs m ? Quasi-realistic laboratory study a l i s m R e a ? Field study Prior NRC Research ? First laboratory experiment Direct parabolic (ceiling perimeter) Direct parabolic (ceiling centre) Task light (undershelf) Indirect...

  13. Controlling Light to Make the Most Energy From the Sun

    SciTech Connect (OSTI)

    Callahan, Dennis; Corcoran, Chris; Eisler, Carissa; Flowers, Cris; Goodman, Matt; Hofmann, Carrie; Sadtler, Bryce

    2013-07-18T23:59:59.000Z

    Representing the Light-Material Interactions in Energy Conversion (LMI), this document is one of the entries in the Ten Hundred and One Word Challenge. As part of the challenge, the 46 Energy Frontier Research Centers were invited to represent their science in images, cartoons, photos, words and original paintings, but any descriptions or words could only use the 1000 most commonly used words in the English language, with the addition of one word important to each of the EFRCs and the mission of DOE energy. The mission of LMI to tailor the morphology, complex dielectric structure, and electronic properties of matter so as to sculpt the flow of sunlight and heat, enabling light conversion to electrical and chemical energy with unprecedented efficiency.

  14. The Advantage of Highly Controlled Lighting for Offices and Commercial Buildings

    SciTech Connect (OSTI)

    Rubinstein, Francis; Bolotov, Dmitriy; Levi, Mark; Powell, Kevin; Schwartz, Peter

    2008-08-17T23:59:59.000Z

    The paper presents results from pilot studies of new 'workstation-specific' luminaires that are designed to provide highly, efficient, customized lighting for open-office cubicles. Workstation specific luminaires have the following characteristics: (1) they provide separate, dimming control of the cubicle's 'ambient' and 'task' lighting components, (2) occupancy sensors and control photosensors are integrated into the fixture's design and operation, (3) luminaires can be networked using physical cabling, microcontrollers and a PC running control software. The energy savings, demand response capabilities and quality of light from the two WS luminaires were evaluated and compared to the performance of a static, low-ambient lighting system that is uncontrolled. Initial results from weeks of operation provide strong indication that WS luminaires can largely eliminate the unnecessary lighting of unoccupied cubicles while providing IESNA-required light levels when the cubicles are occupied. Because each cubicle's lighting is under occupant sensor control, the WS luminaires can capitalize on the fact cubicles are often unoccupied during normal working hours and reduce their energy use accordingly.

  15. IC-BASED CONTROLS FOR ENERGY-EFFICIENT LIGHTING

    SciTech Connect (OSTI)

    Richard Zhang

    2005-03-01T23:59:59.000Z

    A new approach for driving high frequency energy saving ballasts is developed and documented in this report. The developed approach utilizes an IC-based platform that provides the benefits of reduced system cost, reduced ballast size, and universal application to a wide range of lamp technologies, such as linear fluorescent lamps (LFL), compact fluorescent lamps (CFL) and high intensity discharge lamps (HID). The control IC chip set developed for the platform includes dual low voltage (LV) IC gate drive that provides gate drive for high and low side power switches in typical ballast circuits, and ballast controller IC that provides control functionalities optimal for different lamps and digital interface for future extension to more sophisticated control and communication.

  16. Optical control of resonant light transmission for an atom-cavity system

    E-Print Network [OSTI]

    Sharma, Arijit; Sawant, Rahul V; Sheikholeslami, G; Budker, D; Rangwala, S A

    2015-01-01T23:59:59.000Z

    We demonstrate the manipulation of transmitted light through an optical Fabry-Perot cavity, built around a spectroscopy cell containing enriched rubidium vapor. Light resonant with the $^{87}$Rb D$_{2}$ ($F=2/F=1$) $\\leftrightarrow F'$ manifold, is controlled by transverse intersection of the cavity mode by another resonant light beam. The cavity transmission can be suppressed or enhanced depending on the coupling of atomic states due to the intersecting beams. The extreme manifestation of cavity mode control is the precipitious destruction (negative logic switching) or buildup (positive logic switching) of the transmitted light intensity, on intersection of the transverse control beam with the cavity mode. Both the steady state and transient response are experimentally investigated. The mechanism behind the change in cavity transmission is discussed in brief.

  17. Title: Analyzing Occupancy Profiles from a Lighting Controls Field Study Authors: Francis Rubinstein, Nesrin Colak, Judith Jennings, and Danielle Neils

    E-Print Network [OSTI]

    Title: Analyzing Occupancy Profiles from a Lighting Controls Field Study Authors: Francis Introduction Despite a number of published studies on the effectiveness of lighting controls in buildings [1 sensors for reducing peak demand, 2) evaluating the impact of human activity on building lighting

  18. Controlling of grid connected photovoltaic lighting system with fuzzy logic

    SciTech Connect (OSTI)

    Saglam, Safak; Ekren, Nazmi; Erdal, Hasan [Technical Education Faculty, Marmara University, Istanbul 34722 (Turkey)

    2010-02-15T23:59:59.000Z

    In this study, DC electrical energy produced by photovoltaic panels is converted to AC electrical energy and an indoor area is illuminated using this energy. System is controlled by fuzzy logic algorithm controller designed with 16 rules. Energy is supplied from accumulator which is charged by photovoltaic panels if its energy would be sufficient otherwise it is supplied from grid. During the 1-week usage period at the semester time, 1.968 kWh energy is used from grid but designed system used 0.542 kWh energy from photovoltaic panels at the experiments. Energy saving is determined by calculations and measurements for one education year period (9 months) 70.848 kWh. (author)

  19. Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade

    DOE Patents [OSTI]

    Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

    2002-01-01T23:59:59.000Z

    A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) or other lamps arranged vertically, i.e. one lamp above the other, with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum ensures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. In a particular configuration, the reflective septum is bowl shaped, with the upper CFL sitting in the bowl, and a luminous shade hanging down from the bowl. The lower CFL provides both task lighting and uniform shade luminance. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. However, other types of lamps, including incandescent, halogen, and LEDs can also be used in the fixture. The lighting system may be designed for the home, hospitality, office or other environments.

  20. Diesel Exhaust Emissions Control for Light-Duty Vehicles

    SciTech Connect (OSTI)

    Mital, R.; Li, J.; Huang, S. C.; Stroia, B. J.; Yu, R. C. (Cummins, Inc.); Anderson, J.A. (Argonne National Laboratory); Howden, Kenneth C. (U.S. Department of Energy)

    2003-03-01T23:59:59.000Z

    The objective of this paper is to present the results of diesel exhaust aftertreatment testing and analysis done under the FreedomCAR program. Nitrogen Oxides (NOx) adsorber technology was selected based on a previous investigation of various NOx aftertreatment technologies including non-thermal plasma, NOx adsorber and active lean NOx. Particulate Matter (PM) emissions were addressed by developing a catalyzed particulate filter. After various iterations of the catalyst formulation, the aftertreatment components were integrated and optimized for a light duty vehicle application. This compact exhaust aftertreatment system is dual leg and consists of a sulfur trap, NOx adsorbers, and catalyzed particulate filters (CPF). During regeneration, supplementary ARCO ECD low-sulfur diesel fuel is injected upstream of the adsorber and CPF in the exhaust. Steady state and transient emission test results with and without the exhaust aftertreatment system (EAS) are presented. Results of soot filter regeneration by injecting low-sulfur diesel fuel and slip of unregulated emissions, such as NH3, are discussed. Effects of adsorber size and bypass strategy on NOx conversion efficiency and fuel economy penalty are also presented in this paper. The results indicate that if the supplementary fuel injection is optimized, NH3 slip is negligible. During the FTP cycle, injection of low sulfur diesel fuel can create temperature exotherms high enough to regenerate a loaded CPF. With the optimized NOx adsorber regeneration strategies the fuel injection penalty can be reduced by 40 to 50%. Results for various other issues like low temperature light off, reductant optimization, exhaust sulfur management, system integration and design trade-off, are also presented and discussed in this paper. (SAE Paper SAE-2003-01-0041 2003 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view this paper on-line, download this pdf file and print one copy of this paper at no cost for your use only. The downloaded pdf file and printout of this SAE paper may not be copied, distributed or forwarded to others or for the use of others.)

  1. System and Battery Charge Control for PV-Powered AC Lighting Systems

    SciTech Connect (OSTI)

    Kern, G.

    1999-04-01T23:59:59.000Z

    This report reviews a number of issues specific to stand-alone AC lighting systems. A review of AC lighting technology is presented, which discusses the advantages and disadvantages of various lamps. The best lamps for small lighting systems are compact fluorescent. The best lamps for intermediate-size systems are high- or low-pressure sodium. Specifications for battery charging and load control are provided with the goal of achieving lamp lifetimes on the order of 16,000 to 24,000 hours and battery lifetimes of 4 to 5 years. A rough estimate of the potential domestic and global markets for stand-alone AC lighting systems is presented. DC current injection tests were performed on high-pressure sodium lamps and the test results are presented. Finally, a prototype system was designed and a prototype system controller (with battery charger and DC/AC inverter) was developed and built.

  2. Diffracted light from latent images in photoresist for exposure control

    DOE Patents [OSTI]

    Bishop, Kenneth P. (Rio Rancho, NM); Brueck, Steven R. J. (Albuquerque, NM); Gaspar, Susan M. (Albuquerque, NM); Hickman, Kirt C. (Albuquerque, NM); McNeil, John R. (Albuquerque, NM); Naqvi, S. Sohail H. (Albuquerque, NM); Stallard, Brian R. (Albuquerque, NM); Tipton, Gary D. (Albuquerque, NM)

    1997-01-01T23:59:59.000Z

    In microelectronics manufacturing, an arrangement for monitoring and control of exposure of an undeveloped photosensitive layer on a structure susceptible to variations in optical properties in order to attain the desired critical dimension for the pattern to be developed in the photosensitive layer. This is done by ascertaining the intensities for one or more respective orders of diffracted power for an incident beam of radiation corresponding to the desired critical dimension for the photosensitive layer as a function of exposure time and optical properties of the structure, illuminating the photosensitive layer with a beam of radiation of one or more frequencies to which the photosensitive layer is not exposure-sensitive, and monitoring the intensities of the orders of diffracted radiation due to said illumination including at least the first order of diffracted radiation thereof, such that when said predetermined intensities for the diffracted orders are reached during said illumination of photosensitive layer, it is known that a pattern having at least approximately the desired critical dimension can be developed on the photosensitive layer.

  3. Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Office

    SciTech Connect (OSTI)

    Rubinstein, Francis; Enscoe, Abby

    2010-04-19T23:59:59.000Z

    An installation in a Federal building tested the effectiveness of a highly-controlled, workstation-specific lighting retrofit. The study took place in an open-office area with 86 cubicles and low levels of daylight. Each cubicle was illuminated by a direct/indirectpendant luminaire with three 32 watt lamps, two dimmable DALI ballasts, and an occupancy sensor. A centralized control system programmed all three lamps to turn on and off according to occupancy on a workstation-by-workstation basis. Field measurements taken over the course of several monthsdemonstrated 40% lighting energy savings compared to a baseline without advanced controls that conforms to GSA's current retrofit standard. A photometric analysis found that the installation provided higher desktop light levels than the baseline, while an occupant survey found that occupants in general preferred the lighting system to thebaseline.Simple payback is fairly high; projects that can achieve lower installation costs and/or higher energy savings and those in which greenhouse gas reduction and occupant satisfaction are significant priorities provide the ideal setting for workstation-specific lighting retrofits.

  4. DAINTREE NETWORKS PARTNERS WITH CLTC TO ADVANCE LIGHTING CONTROLS UC Davis' California Lighting Technology Center (CLTC) and Daintree team up to increase adoption with

    E-Print Network [OSTI]

    California at Davis, University of

    the ease of system integration and illustrate energy efficiency gains through intelligent data analytics Technology Center is a not-for-profit RD&D facility dedicated to developing and commercializing energy-efficient of networked lighting controls. The widespread adoption of energy-efficient technologies such as lighting

  5. Method and system for controlling the position of a beam of light

    DOE Patents [OSTI]

    Steinkraus, Jr., Robert F. (San Francisco, CA); Johnson, Gary W. (Livermore, CA); Ruggiero, Anthony J. (Livermore, CA)

    2011-08-09T23:59:59.000Z

    An method and system for laser beam tracking and pointing is based on a conventional position sensing detector (PSD) or quadrant cell but with the use of amplitude-modulated light. A combination of logarithmic automatic gain control, filtering, and synchronous detection offers high angular precision with exceptional dynamic range and sensitivity, while maintaining wide bandwidth. Use of modulated light enables the tracking of multiple beams simultaneously through the use of different modulation frequencies. It also makes the system resistant to interfering light sources such as ambient light. Beam pointing is accomplished by feeding back errors in the measured beam position to a beam steering element, such as a steering mirror. Closed-loop tracking performance is superior to existing methods, especially under conditions of atmospheric scintillation.

  6. Looking at pollution control in a new light: Photochemistry for a cleaner environment

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    This phamphet, from the National Renewable Energy Laboratory and Sandia National Laboratory, describes a major new development in the field of photochemistry. The NREL/Sandia team has developed a pollution control technique - photocatalytic oxidation (PCO) that uses the energy in light to destroy environmental contaminants. Applicable as both a waste clean-up and a pollution control technique, PCP could help thousands of businesses comply with environmental regulations.

  7. Lighting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let us countLighting Sign In About | Careers |

  8. Controlling dispersion forces between small particles with artificially created random light fields

    E-Print Network [OSTI]

    Georges Bruegger; Luis Froufe-Perez; Frank Scheffold; Juan Jose Saenz

    2015-01-22T23:59:59.000Z

    Appropriate combinations of laser beams can be used to trap and manipulate small particles with "optical tweezers" as well as to induce significant "optical binding" forces between particles. These interaction forces are usually strongly anisotropic depending on the interference landscape of the external fields. This is in contrast with the familiar isotropic, translationally invariant, van der Waals and, in general, Casimir-Lifshitz interactions between neutral bodies arising from random electromagnetic waves generated by equilibrium quantum and thermal fluctuations. Here we show, both theoretically and experimentally, that dispersion forces between small colloidal particles can also be induced and controlled using artificially created fluctuating light fields. Using optical tweezers as gauge, we present experimental evidence for the predicted isotropic attractive interactions between dielectric microspheres induced by laser-generated, random light fields. These light induced interactions open a path towards the control of translationally invariant interactions with tuneable strength and range in colloidal systems.

  9. Wind-driven Sediment Suspension Controls Light Availability in a Shallow Coastal Lagoon

    E-Print Network [OSTI]

    McGlathery, Karen

    by a conceptual model that describes an increase in nutrient availability leading to an increase in pelagic resuspension of sediments, and low pelagic and high benthic primary productivity because most of the sediment resuspension, not increased pelagic pro- ductivity, may be the dominant control on light availability

  10. Lighting energy savings potential of split-pane electrochromic windows controlled for daylighting with visual comfort

    SciTech Connect (OSTI)

    Software, Anyhere; Fernandes, Luis; Lee, Eleanor; Ward, Greg

    2013-03-15T23:59:59.000Z

    A simulation study was conducted to evaluate lighting energy savings of split-pane electrochromic (EC) windows controlled to satisfy key visual comfort parameters. Using the Radiance lighting simulation software, interior illuminance and luminance levels were computed for a south-facing private office illuminated by a window split into two independently-controlled EC panes. The transmittance of these was optimized hourly for a workplane illuminance target while meeting visual comfort constraints, using a least-squares algorithm with linear inequality constraints. Blinds were successively deployed until visual comfort criteria were satisfied. The energy performance of electrochromics proved to be highly dependent on how blinds were controlled. With hourly blind position adjustments, electrochromics showed significantly higher (62percent and 53percent, respectively without and with overhang) lighting energy consumption than clear glass. With a control algorithm designed to better approximate realistic manual control by an occupant, electrochromics achieved significant savings (48percent and 37percent, respectively without and with overhang). In all cases, energy consumption decreased when the workplace illuminance target was increased. In addition, the fraction of time during which the occupant had an unobstructed view of the outside was significantly greater with electrochromics: 10 months out of the year versus a handful of days for the reference case.

  11. Phase-controllable spin wave generation in iron garnet by linearly polarized light pulses

    SciTech Connect (OSTI)

    Yoshimine, Isao; Iida, Ryugo; Shimura, Tsutomu [Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505 (Japan); Satoh, Takuya, E-mail: satoh@phys.kyushu-u.ac.jp [Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505 (Japan); PRESTO, Japan Science and Technology Agency, Tokyo 102-0076 (Japan); Department of Physics, Kyushu University, Fukuoka 812-8581 (Japan); Stupakiewicz, Andrzej; Maziewski, Andrzej [Laboratory of Magnetism, Faculty of Physics, University of Bialystok, Bialystok 15-424 (Poland)

    2014-07-28T23:59:59.000Z

    A phase-controlled spin wave was non-thermally generated in bismuth-doped rare-earth iron garnet by linearly polarized light pulses. We controlled the initial phase of the spin wave continuously within a range of 180 by changing the polarization azimuth of the excitation light. The azimuth dependences of the initial phase and amplitude of the spin wave were attributed to a combination of the inverse Cotton-Mouton effect and photoinduced magnetic anisotropy. Temporally and spatially resolved spin wave propagation was observed with a CCD camera, and the waveform was in good agreement with calculations. A nonlinear effect of the spin excitation was observed for excitation fluences higher than 100 mJ/cm{sup 2}.

  12. Fiber-optic, anti-cycling, high pressure sodium street light control. Final technical progress report

    SciTech Connect (OSTI)

    NONE

    1995-05-01T23:59:59.000Z

    This is the Final Technical Progress Report on a project to develop and market a Fiber-Optic Anti-Cycling High Pressure Sodium Street Light Control. The field test units are now being made with a single vertical PC board design and contains a computer-on-a-chip or PROM IC to take the place of the majority of the components previously contained on the upper logic board. This will reduce the final costs of the unit when it is in production and increase the control`s flexibility. The authors have finished the soft tooling and have made the 400 plastic cases for the field test units. The new configuration of the cases entails a simplified design of the control shell which will have the lenses cast in place. The shell and base plastics are now finished and in final assembly awaiting the completion of the PC boards.

  13. A Meta-Analysis of Energy Savings from Lighting Controls in Commercial Buildings

    E-Print Network [OSTI]

    Williams, Alison

    2012-01-01T23:59:59.000Z

    2000: 131-142. California Lighting Technology Center. Hybrid2011 01 July. California Lighting Technology Center.2007. Lighting research program project 4.1 hotel and

  14. Lighting energy savings potential of split-pane electrochromic windows controlled for daylighting with visual comfort

    E-Print Network [OSTI]

    Fernandes, Luis

    2014-01-01T23:59:59.000Z

    Daylight Coefficients, Lighting Research and Technology,America, 1999, The IESNA lighting handbook: reference andcontrol of electric lighting and blinds, Solar Energy, 77(

  15. Traffic Light Protocol: WHITE Traffic Light Protocol: WHITE (information may be distributed without restriction, subject to copyright controls.)

    E-Print Network [OSTI]

    Thomas, Andrew

    the event for their gain. The Threats: Internet watch groups and cyber security experts have already potential cyber threats please visit the Center for Internet Security website at CISecurity.org. #12;Traffic Light Protocol: WHITE Traffic Light Protocol: WHITE (information may be distributed without

  16. Light Water Reactor Sustainability Program A Reference Plan for Control Room Modernization: Planning and Analysis Phase

    SciTech Connect (OSTI)

    Jacques Hugo; Ronald Boring; Lew Hanes; Kenneth Thomas

    2013-09-01T23:59:59.000Z

    The U.S. Department of Energys Light Water Reactor Sustainability (LWRS) program is collaborating with a U.S. nuclear utility to bring about a systematic fleet-wide control room modernization. To facilitate this upgrade, a new distributed control system (DCS) is being introduced into the control rooms of these plants. The DCS will upgrade the legacy plant process computer and emergency response facility information system. In addition, the DCS will replace an existing analog turbine control system with a display-based system. With technology upgrades comes the opportunity to improve the overall human-system interaction between the operators and the control room. To optimize operator performance, the LWRS Control Room Modernization research team followed a human-centered approach published by the U.S. Nuclear Regulatory Commission. NUREG-0711, Rev. 3, Human Factors Engineering Program Review Model (OHara et al., 2012), prescribes four phases for human factors engineering. This report provides examples of the first phase, Planning and Analysis. The three elements of Planning and Analysis in NUREG-0711 that are most crucial to initiating control room upgrades are: Operating Experience Review: Identifies opportunities for improvement in the existing system and provides lessons learned from implemented systems. Function Analysis and Allocation: Identifies which functions at the plant may be optimally handled by the DCS vs. the operators. Task Analysis: Identifies how tasks might be optimized for the operators. Each of these elements is covered in a separate chapter. Examples are drawn from workshops with reactor operators that were conducted at the LWRS Human System Simulation Laboratory HSSL and at the respective plants. The findings in this report represent generalized accounts of more detailed proprietary reports produced for the utility for each plant. The goal of this LWRS report is to disseminate the technique and provide examples sufficient to serve as a template for other utilities projects for control room modernization.

  17. Reactivity Controlled Compression Ignition (RCCI) Combustion on a Multi-Cylinder Light-Duty Diesel Engine

    SciTech Connect (OSTI)

    Curran, Scott [ORNL; Hanson, Reed M [ORNL; Wagner, Robert M [ORNL

    2012-01-01T23:59:59.000Z

    Reactivity controlled compression ignition is a low-temperature combustion technique that has been shown, both in computational fluid dynamics modeling and single-cylinder experiments, to obtain diesel-like efficiency or better with ultra-low nitrogen oxide and soot emissions, while operating primarily on gasoline-like fuels. This paper investigates reactivity controlled compression ignition operation on a four-cylinder light-duty diesel engine with production-viable hardware using conventional gasoline and diesel fuel. Experimental results are presented over a wide speed and load range using a systematic approach for achieving successful steady-state reactivity controlled compression ignition combustion. The results demonstrated diesel-like efficiency or better over the operating range explored with low engine-out nitrogen oxide and soot emissions. A peak brake thermal efficiency of 39.0% was demonstrated for 2600 r/min and 6.9 bar brake mean effective pressure with nitrogen oxide emissions reduced by an order of magnitude compared to conventional diesel combustion operation. Reactivity controlled compression ignition emissions and efficiency results are compared to conventional diesel combustion operation on the same engine.

  18. Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Office

    E-Print Network [OSTI]

    Rubinstein, Francis

    2010-01-01T23:59:59.000Z

    continuous rows, a lighting power density (LPD) of 0.83W/ftThis results in a lighting power density (LPD)of 0.83 wattsfixture (ft 2 ) Lighting power density (W/ft 2 ) Hours per

  19. The Advantage of Highly Controlled Lighting for Offices and Commercial Buildings

    E-Print Network [OSTI]

    Rubinstein, Francis

    2010-01-01T23:59:59.000Z

    wall switches. Lighting power density equals 0.88 watts/switching only. Lighting power density is 1.4 watts/squareMaximum Installed Lighting Power Density (w/sf) Total kWh

  20. Conceptual design of a pressure tube light water reactor with variable moderator control

    SciTech Connect (OSTI)

    Rachamin, R.; Fridman, E. [Reactor Safety Div., Inst. of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, POB 51 01 19, 01314 Dresden (Germany); Galperin, A. [Dept. of Nuclear Engineering, Ben-Gurion Univ. of the Negev, POB 653, Beer Sheva 84105 (Israel)

    2012-07-01T23:59:59.000Z

    This paper presents the development of innovative pressure tube light water reactor with variable moderator control. The core layout is derived from a CANDU line of reactors in general, and advanced ACR-1000 design in particular. It should be stressed however, that while some of the ACR-1000 mechanical design features are adopted, the core design basics of the reactor proposed here are completely different. First, the inter fuel channels spacing, surrounded by the calandria tank, contains a low pressure gas instead of heavy water moderator. Second, the fuel channel design features an additional/external tube (designated as moderator tube) connected to a separate moderator management system. The moderator management system is design to vary the moderator tube content from 'dry' (gas) to 'flooded' (light water filled). The dynamic variation of the moderator is a unique and very important feature of the proposed design. The moderator variation allows an implementation of the 'breed and burn' mode of operation. The 'breed and burn' mode of operation is implemented by keeping the moderator tube empty ('dry' filled with gas) during the breed part of the fuel depletion and subsequently introducing the moderator by 'flooding' the moderator tube for the 'burn' part. This paper assesses the conceptual feasibility of the proposed concept from a neutronics point of view. (authors)

  1. Controlled Synthesis of Organic/Inorganic van de Waals Solid for Tunable Light-matter Interactions

    E-Print Network [OSTI]

    Niu, Lin; Cong, Chunxiao; Wu, Chunyang; Wu, Di; Chang, Tay-Rong; Wang, Hong; Zeng, Qingsheng; Zhou, Jiadong; Wang, Xingli; Fu, Wei; Yu, Peng; Fu, Qundong; Zhang, Zhuhua; Yakobson, Boris I; Tay, Beng Kang; Jeng, Horng-Tay; Lin, Hsin; Sum, Tze Chien; Jin, Chuanhong; He, Haiyong; Yu, Ting; Liu, Zheng

    2015-01-01T23:59:59.000Z

    Van de Waals (vdW) solids, as a new type of artificial materials that consisting of alternative layers bonded by weak interactions, have shed light on fantastic optoelectronic devices. As a result, a large variety of shining vdW devices have been engineered via layer-by-layer stacking of two-dimensional materials, although shadowed by the difficulties of fabrication. Alternatively, direct growth of vdW solids have been proved a scalable and swift way towards vdW solids, reflected by the successful synthesis of graphene/h-BN and transition metal dichalcogenides (TMDs) vertical heterostructures from controlled vapor deposition. Enlightened by it, with a three-step deposition and reaction, we realize high-quality organic and inorganic vdW solids, using methylammonium lead halide as the organic part (organic perovskite) and 2D monolayers inorganic as counterpart. Being a perfect light absorbent, the electrons and holes generated in organic perovskite couple with its inorganic 2D companions, and behave dramaticall...

  2. 2003: Energy performance of daylight-linked automatic lighting control systems in large atrium spaces: report on two field-monitored case studies

    E-Print Network [OSTI]

    M. R. Galasiu; Morad R. Atif; Anca D. Galasiu

    This paper presents the field-measured energy performance of two common types of daylight-linked lighting control systems, continuous dimming and automatic on/off installed in two existing large atrium spaces located in Canada. The daylighting performance was evaluated based on the daylight contribution to the indoor illuminance and the amount of electrical lighting displaced by daylighting via the daylight-linked lighting control systems. Measured daylighting contribution to the space indicates that significant lighting energy savings can be achieved in atrium spaces if the daylight-linked lighting control system is appropriately selected, installed and commissioned throughout its existence. Results extrapolated from measurements collected during summer and winter indicate that as installed, the continuous dimming lighting control system provides 46% annual savings in electrical lighting consumption, while the automatic on/off saves between 11-17% in lighting energy. These savings account for 68% of the lighting energy consumed during main occupancy for the continuous dimming system, and 31.5% for the automatic on/off. Operation irregularities such as a reduced dimming linearity and an incorrect adjustment of the phases of the dimming control system, as well as the inadequate location of the photocell controlling the automatic on/off lighting system, the improper maintenance of the skylight during winter and the oversizing of the lighting system reduced the energy efficiency of the lighting control systems by 30-65%.

  3. 2011 Quantum Control of Light & Matter Gordon Research Conference (July 31-August 5, 2011, Mount Holyoke College, South Hadley, MA)

    SciTech Connect (OSTI)

    Thomas Weinacht

    2011-08-05T23:59:59.000Z

    Quantum control of light and matter is the quest to steer a physical process to a desirable outcome, employing constructive and destructive interference. Three basic questions address feasibility of quantum control: (1) The problem of controllability, does a control field exist for a preset initial and target state; (2) Synthesis, constructively finding the field that leads to the target; and (3) Optimal Control Theory - optimizing the field that carries out this task. These continue to be the fundamental theoretical questions to be addressed in the conference. How to realize control fields in the laboratory is an ongoing challenge. This task is very diverse viewing the emergence of control scenarios ranging from attoseconds to microseconds. How do the experimental observations reflect on the theoretical framework? The typical arena of quantum control is an open environment where much of the control is indirect. How are control scenarios realized in dissipative open systems? Can new control opportunities emerge? Can one null decoherence effects? An ideal setting for control is ultracold matter. The initial and final state can be defined more precisely. Coherent control unifies many fields of physical science. A lesson learned in one field can reflect on another. Currently quantum information processing has emerged as a primary target of control where the key issue is controlling quantum gate operation. Modern nonlinear spectroscopy has emerged as another primary field. The challenge is to unravel the dynamics of molecular systems undergoing strong interactions with the environment. Quantum optics where non-classical fields are to be generated and employed. Finally, coherent control is the basis for quantum engineering. These issues will be under the limelight of the Gordon conference on Quantum Control of Light and Matter.

  4. arXiv:1112.6136v2[physics.optics]8Mar2012 Controlled manipulation of light by cooperative response of atoms in an optical lattice

    E-Print Network [OSTI]

    Zheludev, Nikolay

    arXiv:1112.6136v2[physics.optics]8Mar2012 Controlled manipulation of light by cooperative response resonant imaging and may also be employed to form a metamaterial for precise control and manipulation response in an optical lattice to resonant incident light can be employed for precise control

  5. LIGHT WATER REACTOR SUSTAINABILITY PROGRAM ADVANCED INSTRUMENTATION, INFORMATION, AND CONTROL SYSTEMS TECHNOLOGIES TECHNICAL PROGRAM PLAN FOR 2013

    SciTech Connect (OSTI)

    Hallbert, Bruce; Thomas, Ken

    2014-07-01T23:59:59.000Z

    Reliable instrumentation, information, and control (II&C) systems technologies are essential to ensuring safe and efficient operation of the U.S. light water reactor (LWR) fleet. These technologies affect every aspect of nuclear power plant (NPP) and balance-of-plant operations. In 1997, the National Research Council conducted a study concerning the challenges involved in modernization of digital instrumentation and control systems in NPPs. Their findings identified the need for new II&C technology integration.

  6. 2007 The Japan Chemical Journal Forum and Wiley Periodicals, Inc.286286 Rational Design of Light-Controllable

    E-Print Network [OSTI]

    Zhao, Yue

    2007 The Japan Chemical Journal Forum and Wiley Periodicals, Inc.286286 Rational Design of Light offering control over when and where the release of loaded agents takes place. 2007 The Japan Chemical r M i c e l l e s 287 2007 The Japan Chemical Journal Forum and Wiley Periodicals, Inc. arrived

  7. PUBLISHED ONLINE: 25 OCTOBER 2009 | DOI: 10.1038/NPHYS1430 Controlling X-rays with light

    E-Print Network [OSTI]

    Loss, Daniel

    in these latter experiments. All of these examples use light to modify the target system and X-rays to monitor that use shaped electromagnetic pulses to drive a system along a specified dynamical pathway19 . Similarly-wavelength probes to the X-ray regime, the optical control field must drive a coherent electronic response

  8. Electron Beam Energy Chirp Control with a Rectangular Corrugated Structure at the Linac Coherent Light Source

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, Zhen; Bane, Karl; Ding, Yantao; Huang, Zhirong; Iverson, Richard; Maxwell, Timothy; Stupakov, Gennady; Wang, Lanfa

    2015-01-30T23:59:59.000Z

    Electron beam energy chirp is an important parameter that affects the bandwidth and performance of a linac-based, free-electron laser. In this paper we study the wakefields generated by a beam passing between at metallic plates with small corrugations, and then apply such a device as a passive dechirper for the Linac Coherent Light Source (LCLS) energy chirp control with a multi-GeV and femtosecond electron beam. Similar devices have been tested in several places at relatively low energies (#24;100 MeV) and with relatively long bunches (> 1ps). In the parameter regime of the LCLS dechirper, with the corrugation size similar to the gap between the plates, the analytical solutions of the wakefields are no longer applicable, and we resort to a #12;field matching program to obtain the wakes. Based on the numerical calculations, we #12;fit the short-range, longitudinal wakes to simple formulas, valid over a large, useful parameter range. Finally, since the transverse wakefields - both dipole and quadrupole-are strong, we compute and include them in beam dynamics simulations to investigate the error tolerances when this device is introduced in the LCLS.

  9. Electron Beam Energy Chirp Control with a Rectangular Corrugated Structure at the Linac Coherent Light Source

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, Zhen; Bane, Karl; Ding, Yantao; Huang, Zhirong; Iverson, Richard; Maxwell, Timothy; Stupakov, Gennady; Wang, Lanfa

    2015-01-30T23:59:59.000Z

    Electron beam energy chirp is an important parameter that affects the bandwidth and performance of a linac-based, free-electron laser. In this paper we study the wakefields generated by a beam passing between at metallic plates with small corrugations, and then apply such a device as a passive dechirper for the Linac Coherent Light Source (LCLS) energy chirp control with a multi-GeV and femtosecond electron beam. Similar devices have been tested in several places at relatively low energies (#24;100 MeV) and with relatively long bunches (> 1ps). In the parameter regime of the LCLS dechirper, with the corrugation size similar tomorethe gap between the plates, the analytical solutions of the wakefields are no longer applicable, and we resort to a #12;field matching program to obtain the wakes. Based on the numerical calculations, we #12;fit the short-range, longitudinal wakes to simple formulas, valid over a large, useful parameter range. Finally, since the transverse wakefields - both dipole and quadrupole-are strong, we compute and include them in beam dynamics simulations to investigate the error tolerances when this device is introduced in the LCLS.less

  10. Image Processing and control of a programmable spatial light modulator for optic damage protection

    SciTech Connect (OSTI)

    Awwal, A; Leach, R; Brunton, G; Tse, E; Matone, J; Heebner, J

    2010-12-06T23:59:59.000Z

    The heart of the National Ignition Facility is a megajoule-class laser system consisting of 192 beams used to drive inertial confinement fusion reactions. A recently installed system of programmable, liquid-crystal-based spatial light modulators adds the capability of arbitrarily shaping the spatial beam profiles in order to enhance operational flexibility. Its primary intended use is for introducing 'blocker' obscurations shadowing isolated flaws on downstream optical elements that would otherwise be damaged by high fluence laser illumination. Because an improperly shaped blocker pattern can lead to equipment damage, both the position and shape of the obscurations must be carefully verified prior to high-fluence operations. An automatic alignment algorithm is used to perform detection and estimation of the imposed blocker centroid positions compared to their intended locations. Furthermore, in order to minimize the spatially-varying nonlinear response of the device, a calibration of the local magnification is performed at multiple sub-image locations. In this paper, we describe the control and associated image processing of this device that helps to enhance the safety and longevity of the overall system.

  11. Desulfurization Effects on a Light-Duty Diesel Vehicle NOx Adsorber Exhaust Emission Control System

    SciTech Connect (OSTI)

    Tatur, M.; Tomazic, D.; Tyrer, H.; Thornton, M.; Kubsh, J.

    2006-05-01T23:59:59.000Z

    Analyzes the effects on gaseous emissions, before and after desulfurization, on a light-duty diesel vehicle with a NOx adsorber catalyst.

  12. DOI: 10.1002/adfm.200700251 Control of Specular and Diffuse Reflection of Light Using Particle

    E-Print Network [OSTI]

    Lee, Ilsoon

    reflectors are widely used in the back-light units of liquid crystal display (LCD) panels,[1­4] light-emitting diodes (LED)[5,6] and solar cell devices.[7,8] A perfect diffuse reflector is matter that reflects and low solar absorption, metals easily satisfy the general requirements for diffuse reflectors

  13. Topical viscosity control for light hydrocarbon displacing fluids in petroleum recovery and in fracturing fluids for well stimulation

    DOE Patents [OSTI]

    Heller, John P. (Socorro, NM); Dandge, Dileep K. (Socorro, NM)

    1986-01-01T23:59:59.000Z

    Solvent-type flooding fluids comprising light hydrocarbons in the range of ethane to hexane (and mixtures thereof) are used to displace crude oil in formations having temperatures of about 20 degrees to about 150 degrees Centigrade and pressures above about 650 psi, the light hydrocarbons having dissolved therein from about 0.05% to about 3% of an organotin compound of the formula R.sub.3 SnF where each R is independently an alkyl, aryl or alkyaryl group from 3 to 12 carbon atoms. Under the pressures and temperatures described, the organotin compounds become pentacoordinated and linked through the electronegative bridges, forming polymers within the light hydrocarbon flooding media to render them highly viscous. Under ambient conditions, the viscosity control agents will not readily be produced from the formation with either crude oil or water, since they are insoluble in the former and only sparingly soluble in the latter.

  14. Coherent control of light transport in a dense and disordered atomic ensemble

    E-Print Network [OSTI]

    A. S. Sheremet; D. F. Kornovan; L. V. Gerasimov; B. Gouraud; J. Laurat; D. V. Kupriyanov

    2015-03-09T23:59:59.000Z

    Light transport in a dense and disordered cold atomic ensemble, where the cooperation of atomic dipoles essentially modifies their coupling with the radiation modes, offers an alternative approach to light-matter interfacing protocols. Here, we show how the cooperativity and quasi-static dipole interaction affect the process of light propagation under the conditions of electromagnetically-induced transparency (EIT). We perform comparative analysis of the self-consistent approach with ab-initio microscopic calculations and emphasize the role of the interatomic interaction in the dipoles' dynamics. Our results show that in such a dense and strongly disordered system the EIT-based light storage protocol stays relatively insensitive to configuration variations and can be obtained with essentially less atoms than it is normally needed for dilute configurations.

  15. Lighting and Daylight Harvesting

    E-Print Network [OSTI]

    Bos, J.

    2011-01-01T23:59:59.000Z

    exposing us to the latest products and technologies. Daylight Harvesting A system of controlling the direction and the quantity of light both natural and artificial within a given space. This implies: Control of fenestration in terms of size..., transmission and direction. Control of reflected light within a space. Control of electric light in terms of delivery and amount Daylight harvesting systems are typically designed to maintain a minimum recommended light level. This light level...

  16. Lighting energy savings potential of split-pane electrochromic windows controlled for daylighting with visual comfort

    E-Print Network [OSTI]

    Fernandes, Luis

    2014-01-01T23:59:59.000Z

    Energy Performance of Electrochromic Windows Controlled forenergy performance of electrochromic windows. Proceedingssignal for daylight (electrochromic window, no overhang).

  17. Comparative urban drive cycle simulations of light-duty hybrid vehicles with gasoline or diesel engines and emissions controls

    SciTech Connect (OSTI)

    Gao, Zhiming [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL; Smith, David E [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    Electric hybridization is a very effective approach for reducing fuel consumption in light-duty vehicles. Lean combustion engines (including diesels) have also been shown to be significantly more fuel efficient than stoichiometric gasoline engines. Ideally, the combination of these two technologies would result in even more fuel efficient vehicles. However, one major barrier to achieving this goal is the implementation of lean-exhaust aftertreatment that can meet increasingly stringent emissions regulations without heavily penalizing fuel efficiency. We summarize results from comparative simulations of hybrid electric vehicles with either stoichiometric gasoline or diesel engines that include state-of-the-art aftertreatment emissions controls for both stoichiometric and lean exhaust. Fuel consumption and emissions for comparable gasoline and diesel light-duty hybrid electric vehicles were compared over a standard urban drive cycle and potential benefits for utilizing diesel hybrids were identified. Technical barriers and opportunities for improving the efficiency of diesel hybrids were identified.

  18. Design of a Personalized Lighting Control System Enabled by a Space Model

    E-Print Network [OSTI]

    Suter, G.; Petrushevski, F.; Sipetic, M.

    2011-01-01T23:59:59.000Z

    user may specify a target illuminance of 450 - 550 lx. 2. Target ceiling to desk lighting ratio according to user preference. For laptop work a user may specify a target ratio of 40 % to 60 %. 3. Distance of ceiling luminaires to the user?s desk... of the Eleventh International Conference Enhanced Building Operations, New York City, October 18-20, 2011 Figure 2. Sequence diagram of system module interactions for the scenario. Figure 3...

  19. Controlled light localisation and nonlinear-optical interactions of short laser pulses in holey fibres

    SciTech Connect (OSTI)

    Fedotov, Andrei B; Zheltikov, Aleksei M; Golovan', Leonid A; Kashkarov, Pavel K [Department of Physics, M.V. Lomonosov Moscow State University, Moscow (Russian Federation); Tarasevitch, A P; Podshivalov, Alexey A [International Laser Center, M. V. Lomonosov Moscow State University, Moscow (Russian Federation); Alfimov, Mikhail V; Ivanov, Anatoliy A [Photochemistry Center, Russian Academy of Sciences, Moscow (Russian Federation); Beloglazov, V I [Institute of Technology and Processing of Glass Structures, Russian Academy of Sciences, Saratov (Russian Federation); Haus, J W [University of Dayton, Dayton, OH (United States); Linde, D von der [Institut fur Laser- und Plasmaphysik, Universitat Essen, Essen (Germany)

    2001-05-31T23:59:59.000Z

    The influence of the structure of holey-fibre cladding on the effective waveguide mode area and the spectral broadening of femtosecond pulses of titanium-sapphire and forsterite lasers is experimentally studied. These experiments demonstrate that the increase in the air-filling fraction of the holey-fibre cladding may substantially enhance the spectral broadening of laser pulses due to the increase in the degree of light localisation in the fibre core. (femtosecond technologies)

  20. Filamantation and White Light Generation with Spatially and Temporally Controlled Femtosecond Radiation

    E-Print Network [OSTI]

    Kaya, Necati

    2014-10-21T23:59:59.000Z

    or crossing two femtosecond laser beams in a medium. Additionally, as the first step toward coherent control and manipulation of the interaction of femtosecond radiation with molecular systems, a reconstruction of the momentum fragment distribution of laser...

  1. Measurement and control of exciton spin in organic light emitting devices

    E-Print Network [OSTI]

    Segal, Michael, Ph. D. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    Organic semiconductors are a promising new material set for electronic and optoelectronic devices. Their properties can be precisely controlled through chemistry, and they are well-suited for large-area, flexible, and ...

  2. Effects of Biodiesel Operation on Light-Duty Tier 2 Engine and Emission Control Systems: Preprint

    SciTech Connect (OSTI)

    Tatur, M.; Nanjundaswamy, H.; Tomazic, D.; Thornton, M.

    2008-08-01T23:59:59.000Z

    This paper documents the impact of biodiesel blends on engine-out emissions as well as overall system performance in terms of emissions control system calibration and overall system efficiency.

  3. Functionalized Nanoparticles and Surfaces for Controlled Chemical Catalysis and Effective Light Harvesting

    SciTech Connect (OSTI)

    Marye Anne Fox, James K. Whitesell

    2012-11-02T23:59:59.000Z

    We have prepared a range of such arrays as key components for biotechnology and photonic applications. These involve self-assembled arrays of increasing complexity with three-dimensionally disposed multilayer interactions. These arrays also include dendrimers as the distinguishing structural building blocks. These photoactive integrated systems have a regular, highly-branched, three-dimensional architecture. Structural modifications of these units include variation of the core, bridging layers, and terminal groups. These modifications result in a large array of dendritic molecules with potential applications for light harvesting.

  4. Municipal Consortium LED Street Lighting Workshop Presentations...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Controls Norma Isahakian, City of Los Angeles Bureau of Street Lighting San Jose's "Smart" LED Streetlights: Controlled Amy Olay, City of San Jose Adaptive Lighting Controls...

  5. Research report of street lighting controls for the City of Portland, Oregon: References

    SciTech Connect (OSTI)

    Not Available

    1984-01-01T23:59:59.000Z

    A total of 220 units were tested in the City of Philadelphia. Every control carries its own serial number of identification and test purposes. The units were installed in March of 1978 and to date we show zero failures. Data on burning time consistancy will be available from their engineering staff and will be made available to interested engineers with the City of Philadelphia's permission. Th basic design of the unit and current 20 month filed evaluation indicated that our solid state control is living up to expectations. We feel that a unit warranted at 6 times the current period that offers substantial savings in line service calls at a 100% bonus by our rough calculations, deserves a chance to prove itself in the field.

  6. Electrochromic-photovoltaic film for light-sensitive control of optical transmittance

    SciTech Connect (OSTI)

    Branz, Howard M. (Boulder, CO); Crandall, Richard S. (Golden, CO); Tracy, C. Edwin (Golden, CO)

    1994-01-01T23:59:59.000Z

    A variable transmittance optical component includes an electrochromic material and a photovoltaic device-type thin film solar cell deposited in a tandem type, monolithic single coating over the component. A bleed resistor of a predetermined value is connected in series across the electrochromic material and photovoltaic device controlling the activation and deactivation of the electrochromic material. The electrical conductivity between the electrochromic material and the photovoltaic device is enhanced by interposing a transparent electrically conductive layer.

  7. Electrochromic-photovoltaic film for light-sensitive control of optical transmittance

    DOE Patents [OSTI]

    Branz, H.M.; Crandall, R.S.; Tracy, C.E.

    1994-12-27T23:59:59.000Z

    A variable transmittance optical component includes an electrochromic material and a photovoltaic device-type thin film solar cell deposited in a tandem type, monolithic single coating over the component. A bleed resistor of a predetermined value is connected in series across the electrochromic material and photovoltaic device controlling the activation and deactivation of the electrochromic material. The electrical conductivity between the electrochromic material and the photovoltaic device is enhanced by interposing a transparent electrically conductive layer. 5 figures.

  8. FEMTOSECOND TIMING DISTRIBUTION AND CONTROL FOR NEXT GENERATION ACCELERATORS AND LIGHT SOURCES

    SciTech Connect (OSTI)

    Chen, Li-Jin [Idesta Quantum Electronics, LLC

    2014-03-31T23:59:59.000Z

    Femtosecond Timing Distribution At LCLS Free-electron-lasers (FEL) have the capability of producing high photon flux from the IR to the hard x-ray wavelength range and to emit femtosecond and eventually even at-tosecond pulses. This makes them an ideal tool for fundamental as well as applied re-search. Timing precision at the Stanford Linear Coherent Light Source (LCLS) between the x-ray FEL (XFEL) and ultrafast optical lasers is currently no better than 100 fs RMS. Ideally this precision should be much better and could be limited only by the x-ray pulse duration, which can be as short as a few femtoseconds. An increasing variety of science problems involving electron and nuclear dynamics in chemical and material systems will become accessible as the timing improves to a few femtoseconds. Advanced methods of electron beam conditioning or pulse injection could allow the FEL to achieve pulse durations less than one femtosecond. The objec-tive of the work described in this proposal is to set up an optical timing distribution sys-tem based on modelocked Erbium doped fiber lasers at LCLS facility to improve the timing precision in the facility and allow time stamping with a 10 fs precision. The primary commercial applications for optical timing distributions systems are seen in the worldwide accelerator facilities and next generation light sources community. It is reasonable to expect that at least three major XFELs will be built in the next decade. In addition there will be up to 10 smaller machines, such as FERMI in Italy and Maxlab in Sweden, plus the market for upgrading already existing facilities like Jefferson Lab. The total market is estimated to be on the order of a 100 Million US Dollars. The company owns the exclusive rights to the IP covering the technology enabling sub-10 fs synchronization systems. Testing this technology, which has set records in a lab environment, at LCLS, hence in a real world scenario, is an important corner stone of bringing the technology to market.

  9. Membrane-Based Air Composition Control for Light-Duty Diesel Vehicles: A Benefit and Cost Assessment

    SciTech Connect (OSTI)

    K. Stork; R. Poola

    1998-10-01T23:59:59.000Z

    This report presents the methodologies and results of a study conducted by Argonne National Laboratory (Argonne) to assess the benefits and costs of several membrane-based technologies. The technologies evaluated will be used in automotive emissions-control and performance-enhancement systems incorporated into light-duty diesel vehicle engines. Such engines are among the technologies that are being considered to power vehicles developed under the government-industry Partnership for a New Generation of Vehicles (PNGV). Emissions of nitrogen oxides (NO{sub x}) from diesel engines have long been considered a barrier to use of diesels in urban areas. Recently, particulate matter (PM) emissions have also become an area of increased concern because of new regulations regarding emissions of particulate matter measuring 2.5 micrometers or less (PM{sub 2.5}). Particulates are of special concern for diesel engines in the PNGV program; the program has a research goal of 0.01 gram per mile (g/mi) of particulate matter emissions under the Federal Test Procedure (FTP) cycle. This extremely low level (one-fourth the level of the Tier II standard) could threaten the viability of using diesel engines as stand-alone powerplants or in hybrid-electric vehicles. The techniques analyzed in this study can reduce NO{sub x} and particulate emissions and even increase the power density of the diesel engines used in light-duty diesel vehicles.

  10. Prevention of ice formation in light-aircraft-engine induction systems by using an automatic control to operate the carburetor-air heater

    E-Print Network [OSTI]

    Whisenhunt, Garland Bishop

    1955-01-01T23:59:59.000Z

    LIBRARY A A III COLLEGE OF TEXAS PREVENTION OF ICE FORMATION IN LIGHT-AIRCRAFT-EIEIINE INDUCTION SYSTEMS BY USING AN AUTOMATIC CONTROL TO OPERATE THE CARBURETOB AIR HEATER A Thesis GARLAND BISHOP MHISENHUNT & JR SuIm&itted to the Graduate... School of the Agricultural and Mechanioal College of Texas in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1955 MAJOR SUBJECT ' MECHANICAL ENGINEERING& PREVENTION OF ICE FORMATION IN LIGHT...

  11. Simulating Study of Premixed Charge Compression Ignition on Light-Duty Diesel Fuel Economy and Emissions Control

    SciTech Connect (OSTI)

    Gao, Zhiming [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL; Wagner, Robert M [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    We utilize the Powertrain Systems Analysis Toolkit (PSAT) combined with transient engine and aftertreatment component models to simulate the impact of premixed charge compression ignition (PCCI) on the fuel economy and emissions of light-duty (LD) diesel-powered conventional and hybrid electric vehicles (HEVs). Our simulated aftertreatment train consists of a diesel oxidation catalyst (DOC), lean NOx trap (LNT), and catalyzed diesel particulate filter (DPF). The results indicate that utilizing PCCI combustion significantly reduces fuel consumption and tailpipe emissions for the conventional diesel-powered vehicle with NOx and particulate emissions controls. These benefits result from a favorable engine speed-load distribution over the cycle combined with a corresponding reduction in the need to regenerate the LNT and DPF. However, the current PCCI technology appears to offer less potential benefit for diesel HEVs equipped with similar emissions controls. This is because PCCI can only be activated over a relatively small part of the drive cycle. Thus we conclude that future utilization of PCCI in diesel HEVs will require significant extension of the available speed-load range for PCCI and revision of current HEV engine management strategies before significant benefits can be realized.

  12. Advanced Demand Responsive Lighting

    E-Print Network [OSTI]

    Advanced Demand Responsive Lighting Host: Francis Rubinstein Demand Response Research Center demand responsive lighting systems ­ Importance of dimming ­ New wireless controls technologies · Advanced Demand Responsive Lighting (commenced March 2007) #12;Objectives · Provide up-to-date information

  13. Main Canal, Maverick County Water Control and Improvement District above Central Power and Light hydro-electric plant, at Maverick and Kinney Counties, Texas

    E-Print Network [OSTI]

    Ledbetter, John J

    1952-01-01T23:59:59.000Z

    BAIN CANAL NA~ICK COUNTY WATW CONTROL AND INPROllZXBZ DISTRICT ABOVE C~ POWER AND LION HYDRO ELECTRIC PLANT& AT, SIAVERICK AND KINNEY COUNT'S, T~~S By John J. Ledbetter, Jr. Approved as to style and content by: (Che man Committee Heed of pa... ment or Student Advisor May l952 MAIN CANAL RIA~ICK C01E1TY EATER CONTROL AND INPROVZGiWZ DISTRICT ABOVE G~ F01' AND LIGHT HYDRO-ELECTRIC PLANT, AT MAVERICK AND KINNEY GGKJZIES ~ TEXAS By John J. Ledbetter, Jr, A Thesis Submitted...

  14. Toward Control of Matter: Basic Energy Science Needs for a New Class of X-Ray Light Sources

    SciTech Connect (OSTI)

    Arenholz, Elke; Belkacem, Ali; Cocke, Lew; Corlett, John; Falcone, Roger; Fischer, Peter; Fleming, Graham; Gessner, Oliver; Hasan, M. Zahid; Hussain, Zahid; Kevan, Steve; Kirz, Janos; McCurdy, Bill; Nelson, Keith; Neumark, Dan; Nilsson, Anders; Siegmann, Hans; Stocks, Malcolm; Schafer, Ken; Schoenlein, Robert; Spence, John; Weber, Thorsten

    2008-09-24T23:59:59.000Z

    Over the past quarter century, light-source user facilities have transformed research in areas ranging from gas-phase chemical dynamics to materials characterization. The ever-improving capabilities of these facilities have revolutionized our ability to study the electronic structure and dynamics of atoms, molecules, and even the most complex new materials, to understand catalytic reactions, to visualize magnetic domains, and to solve protein structures. Yet these outstanding facilities still have limitations well understood by their thousands of users. Accordingly, over the past several years, many proposals and conceptual designs for"next-generation" x-ray light sources have been developed around the world. In order to survey the scientific problems that might be addressed specifically by those new light sources operating below a photon energy of about 3 keV and to identify the scientific requirements that should drive the design of such facilities, a workshop"Science for a New Class of Soft X-Ray Light Sources" was held in Berkeley in October 2007. From an analysisof the most compelling scientific questions that could be identified and the experimental requirements for answering them, we set out to define, without regard to the specific technologies upon which they might be based, the capabilities such light sources would have to deliver in order to dramatically advance the state of research in the areas represented in the programs of the Department of Energy's Office of Basic Energy Sciences (BES). This report is based on the workshop presentations and discussions.

  15. IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 22, NO. 2, MARCH 2014 557 Illumination Balancing Algorithm for Smart Lights

    E-Print Network [OSTI]

    issues (e.g., ozone depletion, global warming) point to the necessity of research that aims to avoid. It consumes close to 15% and 35% of the electricity used in residential and commercial buildings, respectively% of the electricity. Commercial buildings account for close to 71%, 18% of which is overall lighting electricity use

  16. Evaluation of surfactants as steam diverters/mobility control agents in light oil steamfloods: Effect of oil composition, rates and experimental conditions

    SciTech Connect (OSTI)

    Mahmood, S.M.; Olsen, D.K.; Ramzel, E.B.

    1991-12-01T23:59:59.000Z

    A series of experiments was performed to evaluate the effectiveness of commercially available surfactants for steam-foam EOR applications in light oil reservoirs. The experiments were performed in a 3-ft long, 1-1/2 in.-diameter cylindrical sandpack of about 1 darcy permeability. The sandpack and injected fluids were preheated to 430{degree}F at 155 psi. The main objective of these tests was to investigate the effectiveness of several surfactants in providing mobility control under a variety of conditions expected in light-oil steamfloods. Thus, maximum pressure-rise and foam-bank buildup/decay were noted as operating conditions were changed in a test or in various tests. Tests were performed with various oil types, sacrificial salts, injection rates, injection strategies, vapor-to-liquid fractions (VLF), and steam/N{sub 2} ratios (SNR).

  17. Identifying Lights with their Switches Jayadev Misra

    E-Print Network [OSTI]

    Misra, Jayadev

    Identifying Lights with their Switches Jayadev Misra 09/07/2012 Problem Description Given are N switches and N lights where each switch controls exactly one light and each light is controlled by exactly of selecting some number of switches and turning them on, and, presumably, noting the lights that come

  18. DRIVE CYCLE EFFICIENCY AND EMISSIONS ESTIMATES FOR REACTIVITY CONTROLLED COMPRESSION IGNITION IN A MULTI-CYLINDER LIGHT-DUTY DIESEL ENGINE

    SciTech Connect (OSTI)

    Curran, Scott [ORNL; Briggs, Thomas E [ORNL; Cho, Kukwon [ORNL; Wagner, Robert M [ORNL

    2011-01-01T23:59:59.000Z

    In-cylinder blending of gasoline and diesel to achieve Reactivity Controlled Compression Ignition (RCCI) has been shown to reduce NOx and PM emissions while maintaining or improving brake thermal efficiency as compared to conventional diesel combustion (CDC). The RCCI concept has an advantage over many advanced combustion strategies in that by varying both the percent of premixed gasoline and EGR rate, stable combustion can be extended over more of the light-duty drive cycle load range. Changing the percent premixed gasoline changes the fuel reactivity stratification in the cylinder providing further control of combustion phasing and pressure rise rate than the use of EGR alone. This paper examines the combustion and emissions performance of light-duty diesel engine using direct injected diesel fuel and port injected gasoline to carry out RCCI for steady-state engine conditions which are consistent with a light-duty drive cycle. A GM 1.9L four-cylinder engine with the stock compression ratio of 17.5:1, common rail diesel injection system, high-pressure EGR system and variable geometry turbocharger was modified to allow for port fuel injection with gasoline. Engine-out emissions, engine performance and combustion behavior for RCCI operation is compared against both CDC and a premixed charge compression ignition (PCCI) strategy which relies on high levels of EGR dilution. The effect of percent of premixed gasoline, EGR rate, boost level, intake mixture temperature, combustion phasing and pressure rise rate is investigated for RCCI combustion for the light-duty modal points. Engine-out emissions of NOx and PM were found to be considerably lower for RCCI operation as compared to CDC and PCCI, while HC and CO emissions were higher. Brake thermal efficiency was similar or higher for many of the modal conditions for RCCI operation. The emissions results are used to estimate hot-start FTP-75 emissions levels with RCCI and are compared against CDC and PCCI modes.

  19. LIGHTING 101 1. Common terminology

    E-Print Network [OSTI]

    California at Davis, University of

    SECTION 3 LIGHTING 101 1. Common terminology 2. Sources & luminaires 3. Controls #12;SECTION 3SECTION 3 DISCUSSION: COMMON LIGHTING TERMINOLOGY 1. What are the definitions of the following lighting terms? 2. Do you use these terms in professional practice? 3. What other lighting terminology do you use

  20. LIGHTING 101 1. Common terminology

    E-Print Network [OSTI]

    California at Davis, University of

    LIGHTING 101 1. Common terminology 2. Sources and luminaires 3. Controls #12;SECTION 2 DISCUSSION: COMMON LIGHTING TERMINOLOGY 1. What are the definitions of the following lighting terms? 2. Do you use these terms in professional practice? 3. What other lighting terminology do you use on the job? SLIDE 14

  1. Light Water Reactor Sustainability Program Operator Performance Metrics for Control Room Modernization: A Practical Guide for Early Design Evaluation

    SciTech Connect (OSTI)

    Ronald Boring; Roger Lew; Thomas Ulrich; Jeffrey Joe

    2014-03-01T23:59:59.000Z

    As control rooms are modernized with new digital systems at nuclear power plants, it is necessary to evaluate the operator performance using these systems as part of a verification and validation process. There are no standard, predefined metrics available for assessing what is satisfactory operator interaction with new systems, especially during the early design stages of a new system. This report identifies the process and metrics for evaluating human system interfaces as part of control room modernization. The report includes background information on design and evaluation, a thorough discussion of human performance measures, and a practical example of how the process and metrics have been used as part of a turbine control system upgrade during the formative stages of design. The process and metrics are geared toward generalizability to other applications and serve as a template for utilities undertaking their own control room modernization activities.

  2. Toward Control of Matter: Basic Energy Science Needs for a New Class of X-Ray Light Sources

    E-Print Network [OSTI]

    Arenholz, Elke

    2008-01-01T23:59:59.000Z

    polarization control is the slicing beamline at BESSY.Recent BESSY results on ferromagnetic Ni have unambiguously200 eV) NSLS-II (10 keV) BESSY FEL (1 keV) 3rd Generation

  3. Controlled synthesis of T-shaped BiVO{sub 4} and enhanced visible light responsive photocatalytic activity

    SciTech Connect (OSTI)

    Dong, Shuying; Yu, Chongfei; Li, Yukun [School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan 453007 (China); Li, Yihui [School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007 (China); Sun, Jianhui, E-mail: sunjh@htu.cn [School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan 453007 (China); Geng, Xiaofei [School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan 453007 (China)

    2014-03-15T23:59:59.000Z

    A novel T-shaped BiVO{sub 4} microcrystal photocatalyst was successfully synthesized by the hydrothermal method with the aid of a structure-directing surfactant SDBS in the present study. Having received well characterization with the aid of various techniques and the results showed that the SDBS greatly changed the microstructure of BiVO{sub 4}, which had a unique T shape and belonged to the monoclinic family. The fast exchange dynamics between the surfactants bound to the Bi{sup 3+} seed surface and the free VO{sub 3}{sup ?} in the solution significantly increase the rate of heterogeneous nucleation. In addition, the photocatalytic activity of the prepared T-shaped BiVO{sub 4} was evaluated by the degradation of Methylene Blue solution under visible light irradiation, 17% and 47% higher decolorization rates than the commercial P25 and BiVO{sub 4} synthesized without SDBS, respectively. Meanwhile, it has been found that the degradation kinetics of MB fitted the pseudo-first-order kinetics and the T-shaped BiVO{sub 4} also displayed high photocatalytic performance for metronidazole degradation. -- Graphical abstract: H{sub 2}O{sub 2} molecules function as electron trapping reagent to react with e{sup ?} to enhance the photocatalytic degradation efficiency of MB in the BiVO{sub 4}/H{sub 2}O{sub 2} system under visible light irradiation. Highlights: T-shaped BiVO{sub 4} was synthesized using SDBS as a structure-directing surfactant. SDBS greatly changed the microstructure of BiVO{sub 4}. The T-shaped BiVO{sub 4} had a better visible-light photocatalytic activity. Degradation kinetics of MB by BiVO{sub 4} fitted the pseudo-first-order kinetics.

  4. Technologies and policies for controlling greenhouse gas emissions from the U. S. automobile and light truck fleet.

    SciTech Connect (OSTI)

    Plotkin, S.

    1999-01-01T23:59:59.000Z

    The message conveyed by the above discussion is that there are no shortages of technologies available to improve the fuel efficiency of the U.S. fleet of autos and light trucks. It clearly is technically feasible to improve greatly the fuel economy of the average new light-duty vehicle. Many of these technologies require tradeoffs, however, that manufacturers are unwilling or (as yet) unable to make in today's market and regulatory environment. These tradeoffs involve higher costs (that might be reduced substantially over time with learning and economies of scale), technical risk and added complexity, emissions concerns (especially for direct injection engines, and especially with respect to diesel engine technology), and customer acceptance issues. Even with current low U.S. oil prices, however, many of these technologies may find their way into the U.S. market, or increase their market share, as a consequence of their penetration of European and Japanese markets with their high gasoline prices. Automotive technology is ''fungible'' that is, it can be easily transported from one market to another. Nevertheless, it probably is unrealistic to expect substantial increases in the average fuel economy of the U.S. light-duty fleet without significant changes in the market. Without such changes, the technologies that do penetrate the U.S. market are more likely to be used to increase acceleration performance or vehicle structures or enable four wheel drive to be included in vehicles without a net mpg penalty. In other words, technology by itself is not likely to be enough to raise fleet fuel economy levels - this was the conclusion of the 1995 Ailomar Conference on Energy and Sustainable Transportation, organized by the Transportation Research Board's Committees on Energy and Alternative Fuels, and it is one I share.

  5. Energy-efficient lighting system for television

    DOE Patents [OSTI]

    Cawthorne, Duane C. (Amarillo, TX)

    1987-07-21T23:59:59.000Z

    A light control system for a television camera comprises an artificial light control system which is cooperative with an iris control system. This artificial light control system adjusts the power to lamps illuminating the camera viewing area to provide only sufficient artificial illumination necessary to provide a sufficient video signal when the camera iris is substantially open.

  6. Beyond the Replacement Paradigm: Smart Lighting

    E-Print Network [OSTI]

    Salama, Khaled

    Switches Smart Building & Grid Interfaces Efficient full spectrum LEDs without droop Versatile, low - Visible Light Communications Integration of smart fixtures, networked sensors and control systemsBeyond the Replacement Paradigm: Smart Lighting Robert F. Karlicek, Jr. Director, Smart Lighting

  7. Smart lighting: New Roles for Light

    E-Print Network [OSTI]

    Salama, Khaled

    Smart lighting: New Roles for Light in the Solid State Lighting World Robert F. Karlicek, Jr. Director, Smart Lighting Engineering Research Center Professor, Electrical, Systems and Computer Lighting What is Smart Lighting Technology Barriers to Smart Lighting Visible Light Communications

  8. Commercial Lighting

    Broader source: Energy.gov [DOE]

    Commercial lighting accounts for more than 20 percent of total commercial building energy use. The Energy Department works to reduce lighting energy use through research and deployment.

  9. Management and monitoring of public buildings through ICT based systems: control rules for energy saving of lighting , J. Virgone2

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    The presented work addresses the topic of energy savings in existing public buildings, when no significant reduction in energy usage and CO2 footprint in existing public buildings and spaces by implementingTitle Management and monitoring of public buildings through ICT based systems: control rules

  10. Report from the Light Water Reactor Sustainability Workshop on Advanced Instrumentation, Information, and Control Systems and Human-System Interface Technologies

    SciTech Connect (OSTI)

    Bruce P. Hallbert; J. J. Persensky; Carol Smidts; Tunc Aldemir; Joseph Naser

    2009-08-01T23:59:59.000Z

    The Light Water Reactor Sustainability (LWRS) Program is a research and development (R&D) program sponsored by the U.S. Department of Energy (DOE). The program is operated in close collaboration with industry R&D programs to provide the technical foundations for licensing and managing the long-term, safe, and economical operation of Nuclear Power Plants that are currently in operation. The LWRS Program focus is on longer-term and higher-risk/reward research that contributes to the national policy objectives of energy and environmental security. Advanced instruments and control (I&C) technologies are needed to support the safe and reliable production of power from nuclear energy systems during sustained periods of operation up to and beyond their expected licensed lifetime. This requires that new capabilities to achieve process control be developed and eventually implemented in existing nuclear assets. It also requires that approaches be developed and proven to achieve sustainability of I&C systems throughout the period of extended operation. The strategic objective of the LWRS Program Advanced Instrumentation, Information, and Control Systems Technology R&D pathway is to establish a technical basis for new technologies needed to achieve safety and reliability of operating nuclear assets and to implement new technologies in nuclear energy systems. This will be achieved by carrying out a program of R&D to develop scientific knowledge in the areas of: Sensors, diagnostics, and prognostics to support characterization and prediction of the effects of aging and degradation phenomena effects on critical systems, structures, and components (SSCs) Online monitoring of SSCs and active components, generation of information, and methods to analyze and employ online monitoring information New methods for visualization, integration, and information use to enhance state awareness and leverage expertise to achieve safer, more readily available electricity generation. As an initial step in accomplishing this effort, the Light Water Reactor Sustainability Workshop on Advanced Instrumentation, Information, and Control Systems and Human-System Interface Technologies was held March 2021, 2009, in Columbus, Ohio, to enable industry stakeholders and researchers in identification of the nuclear industrys needs in the areas of future I&C technologies and corresponding technology gaps and research capabilities. Approaches for collaboration to bridge or fill the technology gaps were presented and R&D activities and priorities recommended. This report documents the presentations and discussions of the workshop and is intended to serve as a basis for the plan under development to achieve the goals of the I&C research pathway.

  11. Light Properties Light travels at the speed of light `c'

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    LIGHT!! #12;Light Properties Light travels at the speed of light `c' C = 3 x 108 m/s Or 190,000 miles/second!! Light could travel around the world about 8 times in one second #12;What is light?? Light is a "wave packet" A photon is a "light particle" #12;Electromagnetic Radiation and You Light is sometimes

  12. Experimental Investigation of Fuel-Reactivity Controlled Compression Ignition (RCCI) Combustion Mode in a Multi-Cylinder, Light-Duty Diesel Engine

    SciTech Connect (OSTI)

    Cho, Kukwon [ORNL] [ORNL; Curran, Scott [ORNL] [ORNL; Prikhodko, Vitaly Y [ORNL] [ORNL; Sluder, Scott [ORNL] [ORNL; Parks, II, James E [ORNL; Wagner, Robert M [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    An experimental study was performed to provide the combustion and emission characteristics resulting from fuel-reactivity controlled compression ignition (RCCI) combustion mode utilizing dual-fuel approach in a light-duty, multi-cylinder diesel engine. In-cylinder fuel blending using port fuel injection of gasoline before intake valve opening (IVO) and early-cycle, direct injection of diesel fuel was used as the charge preparation and fuel blending strategy. In order to achieve the desired auto-ignition quality through the stratification of the fuel-air equivalence ratio ( ), blends of commercially available gasoline and diesel fuel were used. Engine experiments were performed at an engine speed of 2300rpm and an engine load of 4.3bar brake mean effective pressure (BMEP). It was found that significant reduction in both nitrogen oxide (NOx) and particulate matter (PM) was realized successfully through the RCCI combustion mode even without applying exhaust gas recirculation (EGR). However, high carbon monoxide (CO) and hydrocarbon (HC) emissions were observed. The low combustion gas temperature during the expansion and exhaust processes seemed to be the dominant source of high CO emissions in the RCCI combustion mode. The high HC emissions during the RCCI combustion mode could be due to the increased combustion quenching layer thickness as well as the -stratification at the periphery of the combustion chamber. The slightly higher brake thermal efficiency (BTE) of the RCCI combustion mode was observed than the other combustion modes, such as the conventional diesel combustion (CDC) mode, and single-fuel, premixed charge compression ignition (PCCI) combustion mode. The parametric study of the RCCI combustion mode revealed that the combustion phasing and/or the peak cylinder pressure rise rate of the RCCI combustion mode could be controlled by several physical parameters premixed ratio (rp), intake swirl intensity, and start of injection (SOI) timing of directly injected fuel unlike other low temperature combustion (LTC) strategies.

  13. Lighting Control Console Operations Manual

    E-Print Network [OSTI]

    Martin, Jeff

    and Blind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 HTP vs. LTP

  14. Cerenkov Light

    ScienceCinema (OSTI)

    Slifer, Karl

    2014-05-22T23:59:59.000Z

    The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.

  15. Cerenkov Light

    SciTech Connect (OSTI)

    Slifer, Karl

    2013-06-13T23:59:59.000Z

    The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.

  16. Lighting Renovations

    Broader source: Energy.gov [DOE]

    When undertaking a lighting renovation in a Federal building, daylighting is the primary renewable energy opportunity. Photovoltaics (PV) also present an excellent opportunity. While this guide...

  17. Vehicle Traffic Control Signal Heads Light Emitting Diode Circular Signal Supplement (VTCSH-LED). This replaced the so-called Interim LED Purchase Specifications,

    E-Print Network [OSTI]

    S. Behura

    Engineers (ITE) specification for light-emitting diode (LED) circular traffic signals recently was updated (June 27, 2005) and published under the name

  18. artificial lighting good: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    24 25 Next Page Last Page Topic Index 1 Adaptive predictive lighting controllers for daylight artificial light integrated schemes. Open Access Theses and Dissertations Summary:...

  19. Pupillary efficient lighting system

    DOE Patents [OSTI]

    Berman, Samuel M. (San Francisco, CA); Jewett, Don L. (Mill Valley, CA)

    1991-01-01T23:59:59.000Z

    A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination.

  20. Overcoming Common Pitfalls: Energy Efficient Lighting Projects...

    Broader source: Energy.gov (indexed) [DOE]

    require light levels to go off after 2 am. This regular series would be easily set. Daylight based controls use sensors to figure out when more light is needed. Photo cells are...

  1. Demand Responsive Lighting: A Scoping Study

    SciTech Connect (OSTI)

    Rubinstein, Francis; Kiliccote, Sila

    2007-01-03T23:59:59.000Z

    The objective of this scoping study is: (1) to identify current market drivers and technology trends that can improve the demand responsiveness of commercial building lighting systems and (2) to quantify the energy, demand and environmental benefits of implementing lighting demand response and energy-saving controls strategies Statewide. Lighting systems in California commercial buildings consume 30 GWh. Lighting systems in commercial buildings often waste energy and unnecessarily stress the electrical grid because lighting controls, especially dimming, are not widely used. But dimmable lighting equipment, especially the dimming ballast, costs more than non-dimming lighting and is expensive to retrofit into existing buildings because of the cost of adding control wiring. Advances in lighting industry capabilities coupled with the pervasiveness of the Internet and wireless technologies have led to new opportunities to realize significant energy saving and reliable demand reduction using intelligent lighting controls. Manufacturers are starting to produce electronic equipment--lighting-application specific controllers (LAS controllers)--that are wirelessly accessible and can control dimmable or multilevel lighting systems obeying different industry-accepted protocols. Some companies make controllers that are inexpensive to install in existing buildings and allow the power consumed by bi-level lighting circuits to be selectively reduced during demand response curtailments. By intelligently limiting the demand from bi-level lighting in California commercial buildings, the utilities would now have an enormous 1 GW demand shed capability at hand. By adding occupancy and light sensors to the remotely controllable lighting circuits, automatic controls could harvest an additional 1 BkWh/yr savings above and beyond the savings that have already been achieved. The lighting industry's adoption of DALI as the principal wired digital control protocol for dimming ballasts and increased awareness of the need to standardize on emerging wireless technologies are evidence of this transformation. In addition to increased standardization of digital control protocols controller capabilities, the lighting industry has improved the performance of dimming lighting systems over the last two years. The system efficacy of today's current dimming ballasts is approaching that of non-dimming program start ballasts. The study finds that the benefits of applying digital controls technologies to California's unique commercial buildings market are enormous. If California were to embark on an concerted 20 year program to improve the demand responsiveness and energy efficiency of commercial building lighting systems, the State could avoid adding generation capacity, improve the elasticity of the grid, save Californians billion of dollars in avoided energy charges and significantly reduce greenhouse gas emissions.

  2. A Model for Evaluation of Life-Cycle Energy Savings of Occupancy Sensors for Control of Lighting and Ventilation in Office Buildings

    E-Print Network [OSTI]

    Degelman, L. O.

    2000-01-01T23:59:59.000Z

    Lighting and ventilation represent the majority of the air conditioning loads in office buildings in hot humid climates. Use of motion sensors is one way to minimize the energy used for these loads. This paper describes the methods used...

  3. A Model for Evaluation of Life-Cycle Energy Savings of Occupancy Sensors for Control of Lighting and Ventilation in Office Buildings

    E-Print Network [OSTI]

    Degelman, L. O.

    2000-01-01T23:59:59.000Z

    Lighting and ventilation represent the majority of the air conditioning loads in office buildings in hot humid climates. Use of motion sensors is one way to minimize the energy used for these loads. This paper describes the methods used...

  4. Morphology-controlled synthesis of Ti{sup 3+} self-doped yolkshell structure titanium oxide with superior photocatalytic activity under visible light

    SciTech Connect (OSTI)

    Wang, Shixiong [School of Chemistry Science and Engineering, Yunnan University, No. 2, Green Lake North Road, Kunming 650091, Yunnan (China); Yang, Xiangjun, E-mail: 573134536@qq.com [School of Chemistry Science and Engineering, Yunnan University, No. 2, Green Lake North Road, Kunming 650091, Yunnan (China); Wang, Yapeng; Liu, Lixiang; Guo, Yuanyuan [School of Chemistry Science and Engineering, Yunnan University, No. 2, Green Lake North Road, Kunming 650091, Yunnan (China); Guo, Hong, E-mail: guohongcom@126.com [School of Chemistry Science and Engineering, Yunnan University, No. 2, Green Lake North Road, Kunming 650091, Yunnan (China); School of Chemistry and Chemical Engineering, Qujing Normal University, Qujing 655000, Yunnan (China)

    2014-05-01T23:59:59.000Z

    Ti{sup 3+} self-doped yolkshell structure titanium oxide nanoparticle aggregates are fabricated through an environmental template-free route and the reduction reaction at low temperature subsequently. After the Ti{sup 3+} doping, the reduced TiO{sub 2} sample exhibits a wide visible-light absorption ranged from 400 nm to 800 nm. The intrinsic hollow coreshell microstructure can make multiple reflections of light within the chamber, and thus results in more efficient use of the light source compared with solid structure. Besides, the large surface area can render the sample with a high activity. Therefore, Ti{sup 3+} self-doped yolkshell structure titanium oxide exhibits a superior photocatalytic activity under visible light. This strategy is simple, cheap and mass-productive, which may shed light on a new avenue for large scale production of self-doped yolkshell structural nano functional materials for catalyst, sensors, energy storage and other new applications. - Graphical abstract: A facile generic strategy is employed to prepare Ti{sup 3+} self-doped yolkshell structure titanium oxide nanoparticle aggregates with the superior photocatalytic activity under visible light. - Highlights: Yolkshell TiO{sub 2} mesospheres are synthesized by solvothermal alcoholysis. Ti{sup 3+} self-doped yolkshell structure titanium oxide is obtained at low temperature. It exhibits a remarkable photocatalytic activity.

  5. Light-shift modulated photon-echo

    E-Print Network [OSTI]

    Chanelire, Thierry

    2015-01-01T23:59:59.000Z

    We show that the AC-Stark shift (light-shift) is a powerful and versatile tool to control the emission of a photon-echo in the context of optical storage. As a proof-of-principle, we demonstrate that the photon-echo efficiency can be fully modulated by applying light-shift control pulses in an erbium doped solid. The control of the echo emission is attributed to the spatial gradient induced by the light-shift beam.

  6. Light-shift modulated photon-echo

    E-Print Network [OSTI]

    Thierry Chanelire; Gabriel Htet

    2015-02-24T23:59:59.000Z

    We show that the AC-Stark shift (light-shift) is a powerful and versatile tool to control the emission of a photon-echo in the context of optical storage. As a proof-of-principle, we demonstrate that the photon-echo efficiency can be fully modulated by applying light-shift control pulses in an erbium doped solid. The control of the echo emission is attributed to the spatial gradient induced by the light-shift beam.

  7. STATE OF CALIFORNIA CERTIFICATE OF COMPLIANCE, SIGN LIGHTING

    E-Print Network [OSTI]

    STATE OF CALIFORNIA CERTIFICATE OF COMPLIANCE, SIGN LIGHTING CEC-SLTG-1C (Revised 10/10) CALIFORNIA Lighting) (Page 1 of 4) SLTG-1C Project Name: Date: Project Address: Location of Sign Phase of Sign Construction Type of Lighting Control Outdoor Signs New Signs New Lighting Controls Indoor Signs Sign

  8. Light emitting ceramic device

    DOE Patents [OSTI]

    Valentine, Paul; Edwards, Doreen D.; Walker, Jr., William John; Slack, Lyle H.; Brown, Wayne Douglas; Osborne, Cathy; Norton, Michael; Begley, Richard

    2010-05-18T23:59:59.000Z

    A light-emitting ceramic based panel, hereafter termed "electroceramescent" panel, is herein claimed. The electroceramescent panel is formed on a substrate providing mechanical support as well as serving as the base electrode for the device. One or more semiconductive ceramic layers directly overlay the substrate, and electrical conductivity and ionic diffusion are controlled. Light emitting regions overlay the semiconductive ceramic layers, and said regions consist sequentially of a layer of a ceramic insulation layer and an electroluminescent layer, comprised of doped phosphors or the equivalent. One or more conductive top electrode layers having optically transmissive areas overlay the light emitting regions, and a multi-layered top barrier cover comprising one or more optically transmissive non-combustible insulation layers overlay said top electrode regions.

  9. Shaping the Next - Buildings and Energy: Advanced Lighting

    SciTech Connect (OSTI)

    Richman, Eric E.

    2014-01-01T23:59:59.000Z

    short bit on advanced lighting for the future relating specifically to controls and new tech such as LEDs

  10. Light Computing

    E-Print Network [OSTI]

    Gordon Chalmers

    2006-10-13T23:59:59.000Z

    A configuration of light pulses is generated, together with emitters and receptors, that allows computing. The computing is extraordinarily high in number of flops per second, exceeding the capability of a quantum computer for a given size and coherence region. The emitters and receptors are based on the quantum diode, which can emit and detect individual photons with high accuracy.

  11. Psychophysical evaluations of modulated color rendering for energy performance of LED-based architectural lighting

    E-Print Network [OSTI]

    Thompson, Maria do Rosrio

    2007-01-01T23:59:59.000Z

    This thesis is focused on the visual perception evaluation of colors within an environment of a highly automated lighting control strategy. Digitally controlled lighting systems equipped with light emitting diodes, LEDs, ...

  12. Residential Lighting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical squestionnairesquestionnaires AgreementLighting

  13. Lighting Inventory Lighting Theatre and Drama

    E-Print Network [OSTI]

    Indiana University

    Lighting Inventory Lighting Theatre and Drama Description Totals R.Halls Wells- Metz Light ERS ETC SourceFour 25 25 50 degree ERS Strand Lighting 64 14 24 12 14 36 degree ERS ETC Source Four 15 15 36 degree ERS Strand Lighting 124 60 58 2 4 26 degree ERS ETC SourceFour 2 2 26 degree ERS Strand

  14. Advanced lighting guidelines: 1993. Final report

    SciTech Connect (OSTI)

    Eley, C.; Tolen, T.M. [Eley Associates, San Francisco, CA (United States); Benya, J.R. [Luminae Souter Lighting Design, San Francisco, CA (United States); Rubinstein, F.; Verderber, R. [Lawrence Berkeley Lab., CA (United States)

    1993-12-31T23:59:59.000Z

    The 1993 Advanced Lighting Guidelines document consists of twelve guidelines that provide an overview of specific lighting technologies and design application techniques utilizing energy-efficient lighting practice. Lighting Design Practice assesses energy-efficient lighting strategies, discusses lighting issues, and explains how to obtain quality lighting design and consulting services. Luminaires and Lighting Systems surveys luminaire equipment designed to take advantage of advanced technology lamp products and includes performance tables that allow for accurate estimation of luminaire light output and power input. The additional ten guidelines -- Computer-Aided Lighting Design, Energy-Efficient Fluorescent Ballasts, Full-Size Fluorescent Lamps, Compact Fluorescent Lamps, Tungsten-Halogen Lamps, Metal Halide and HPS Lamps, Daylighting and Lumen Maintenance, Occupant Sensors, Time Scheduling Systems, and Retrofit Control Technologies -- each provide a product technology overview, discuss current products on the lighting equipment market, and provide application techniques. This document is intended for use by electric utility personnel involved in lighting programs, lighting designers, electrical engineers, architects, lighting manufacturers` representatives, and other lighting professionals.

  15. LED Lighting Basics

    Broader source: Energy.gov [DOE]

    Light-Emitting diodes (LEDs) efficiently produce light in a fundamentally different way than any legacy or traditional source of light.

  16. Light Source

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let us count theLienertLift Forces in a Light

  17. Adaptive control for optimizing microalgae production

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Adaptive control for optimizing microalgae production Francis Mairet Rafael Mu for light-limited microalgae culture. This controller regulates the light absorption factor, defined productivity under day-night cycles. Keywords: Nonlinear controller, Microalgae, Optimization, Biomass

  18. Sustainable Office Lighting Options

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Sustainable Office Lighting Options Task Lighting: Task lighting is a localized method of lighting a workspace so that additional, unnecessary lighting is eliminated, decreasing energy usage and costs. Illumination levels in the targeted work areas are higher with task lighting than with the ambient levels

  19. Improved light extraction from white organic light-emitting devices using a binary random phase array

    SciTech Connect (OSTI)

    Inada, Yasuhisa, E-mail: inada.yasuhisa@jp.panasonic.com; Nishiwaki, Seiji; Hirasawa, Taku; Nakamura, Yoshitaka; Hashiya, Akira; Wakabayashi, Shin-ichi; Suzuki, Masa-aki [R and D Division, Panasonic Corporation, 1006 Kadoma, Kadoma City, Osaka 571-8501 (Japan); Matsuzaki, Jumpei [Device Development Center, Eco Solutions Company, Panasonic Corporation, 1048 Kadoma, Osaka 571-8686 Japan (Japan)

    2014-02-10T23:59:59.000Z

    We have developed a binary random phase array (BRPA) to improve the light extraction performance of white organic light-emitting devices (WOLEDs). We demonstrated that the scattering of incoming light can be controlled by employing diffraction optics to modify the structural parameters of the BRPA. Applying a BRPA to the substrate of the WOLED leads to enhanced extraction efficiency and suppression of angle-dependent color changes. Our systematic study clarifies the effect of scattering on the light extraction of WOLEDs.

  20. Energy and lighting

    SciTech Connect (OSTI)

    Berman, S.

    1985-01-01T23:59:59.000Z

    Advances in research for new types of lighting with increased efficacies (lumens/watt) are discussed in the following areas: (1) high-frequency, solid-state ballasts, (2) isotopic enhancement of mercury isotopes, (3) magnetic augmentation, (4) electrodeless, ultra-high frequency, (5) tuned phosphors, (6) two-photon phosphors, (7) heat mirrors, and (3) advanced control circuits to take advantage of daylight and occupancy. As of 1985, improvements in efficacy have been accomplished on an economic basis to save energy for (1) high-frequency ballasts (25%), (2) isotopic enhancement (5%), and (8) advanced control circuits (up to 50%). Most of these advances depend on a deeper understanding of the weakly ionized plasma as a radiating and diffusing medium. 3 figures, 4 tables.

  1. Evaluation of the tritium content in light water reactor control and absorber rods to obtain data for the fuel cycle backend

    SciTech Connect (OSTI)

    Bleier, A.; Neeb, K.H.; Gelfort, E.; Mischke, J.

    1986-08-01T23:59:59.000Z

    Tritium inventories and tritium distribution have been determined in boron glass absorber rods discharged from a pressurized water reactor first-cycle core and in spent boron carbide (B/sub 4/C) control rods from a boiling water reactor. The total tritium inventory in the boron glass absorber rods from the Stade nuclear reactor amounts to approx. =8.0 x 10/sup 10/ Bq (2.2 Ci) per rod. Of this, 99.6% was fixed in the boron glass itself and 0.4% in the Al/sub 2/O/sub 3/ pellets. The 4 x 10/sup -3/% fractions in the tube cladding and support pipe and the 1 x 10/sup -2/% fraction in the fill gas accounted for an insignificant part of the total tritium inventory of the rod. This experimentally determined tritium inventory was a factor of 5 larger than that suggested by the calculated estimate. The discrepancy between analyzed and calculated values can be explained by tritium formation from lithium impurities in the boron glass, where a 30-ppm lithium content would be adequate for this tritium inventory to be generated by the reaction /sup 6/Li(n,..cap alpha..)/sup 3/H. Evaluation of the B/sub 4/C control rods from the Lingen nuclear reactor after 3 yr of operation gave a 3.2 x 10/sup 10/Bq(0.85-Ci)tritium inventory per B/sub 4/C rod, while the total tritium inventory for a control rod assembly containing 60 B/sub 4/C rods was approx. =1.9 x 10/sup 12/ Bq (50 Ci). The tritium generated was essentially bound 100% in the B/sub 4/C, since the hulls contained only 6 x 10/sup -3/% and the fill gas only 2 x 10/sup -4/%.

  2. Lighting Options for Homes.

    SciTech Connect (OSTI)

    Baker, W.S.

    1991-04-01T23:59:59.000Z

    This report covers many aspects of various lighting options for homes. Types of light sources described include natural light, artificial light, incandescent lamps, fluorescent lamps, and high intensity discharge lamps. A light source selection guide gives the physical characteristics of these, design considerations, and common applications. Color, strategies for efficient lighting, and types of lighting are discussed. There is one section giving tips for various situations in specific rooms. Rooms and types of fixtures are shown on a matrix with watts saved by using the recommended type lighting for that room and room location. A major emphasis of this report is saving energy by utilizing the most suitable, recommended lighting option. (BN)

  3. Mobile lighting apparatus

    DOE Patents [OSTI]

    Roe, George Michael; Klebanoff, Leonard Elliott; Rea, Gerald W; Drake, Robert A; Johnson, Terry A; Wingert, Steven John; Damberger, Thomas A; Skradski, Thomas J; Radley, Christopher James; Oros, James M; Schuttinger, Paul G; Grupp, David J; Prey, Stephen Carl

    2013-05-14T23:59:59.000Z

    A mobile lighting apparatus includes a portable frame such as a moveable trailer or skid having a light tower thereon. The light tower is moveable from a stowed position to a deployed position. A hydrogen-powered fuel cell is located on the portable frame to provide electrical power to an array of the energy efficient lights located on the light tower.

  4. Light disappears rapidly (exponentially)

    E-Print Network [OSTI]

    Kudela, Raphael M.

    #12;#12;#12;#12;Light disappears rapidly (exponentially) with depth At the same time, the color of the light shifts #12;#12;#12;#12; Euphotic zone plentiful light 0-100 m (about) Dysphotic zone very, very little light 100-1000 m (about) Aphotic zone no light below 1000 m #12;Sunlight in Water

  5. Control of the Goos-Hanchen shift of a light beam via a coherent driving field RID A-4660-2010

    E-Print Network [OSTI]

    Wang, Li-Gang; Ikram, Manzoor; Zubairy, M. Suhail

    2008-01-01T23:59:59.000Z

    ;positive or negative#2; under the suitable conditions on the control field, without changing the structure of the cavity. DOI: 10.1103/PhysRevA.77.023811 PACS number#1;s#2;: 42.25.Gy, 42.25.Bs, 42.50.Md It is well known that there exists a tiny lateral... state #5;b#6;, as shown in Fig. 1#1;b#2;. In an appropriate frame and under the dipole approximation, the system?s Hamiltonian is written in the form c#1; a #2; c#3; p#3; b (b) rs t s (a) d2d1 d1 z y FIG. 1. #1;Color online#2; #1;a#2...

  6. New Light Sources for Tomorrow's Lighting Designs

    E-Print Network [OSTI]

    Krailo, D. A.

    can ever be saved on that monthly energy bill. During the past several years, many new light sources have been developed and introduced. These product introductions have not been limited to anyone lamp type, but instead may be found in fila ment..., fluorescent and high intensity discharge lamp families. Man , ufacturers of light sources have two basic goals for new product development. These goals are high efficiency lighting and improved colo'r rendering properties. High efficiency lighting may take...

  7. Hybrid solar lighting distribution systems and components

    DOE Patents [OSTI]

    Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

    2011-07-05T23:59:59.000Z

    A hybrid solar lighting distribution system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates all components.

  8. Hybrid solar lighting systems and components

    DOE Patents [OSTI]

    Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

    2007-06-12T23:59:59.000Z

    A hybrid solar lighting system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates each component.

  9. EK101 Engineering Light Smart Lighting

    E-Print Network [OSTI]

    Bifano, Thomas

    EK101 Engineering Light Smart Lighting Homework for 9/10 1. Make an estimate (using if the patent is granted.) 3. What is a lumen? A lux? How are the two related? How would you use a lux meter, (Lux, Lumens/m2) Luminous Flux: Perceivable light power from a source, (Lumens) Use the lux meter

  10. Specific light in sculpture

    E-Print Network [OSTI]

    Powell, John William

    1989-01-01T23:59:59.000Z

    Specific light is defined as light from artificial or altered natural sources. The use and manipulation of light in three dimensional sculptural work is discussed in an historic and contemporary context. The author's work ...

  11. Light Duty Combustion Research: Advanced Light-Duty Combustion...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments 2009 DOE Hydrogen Program and...

  12. Hanford Site lighting occupancy sensor study

    SciTech Connect (OSTI)

    Richman, E.E.; Dittmer, A.L.; Keller, J.M.

    1993-09-01T23:59:59.000Z

    This study was designed to assess the potential energy savings from the use of lighting occupancy sensor control in the US Department of Energy (DOE) Hanford Site office facilities. The final results of the study provide useful information for assessing cost-effective use of occupancy sensor lighting control. The results also include specific application data for Hanford Site office building spaces that indicate where sensor technology could be applied for cost-effective energy savings.

  13. Exciting White Lighting

    Broader source: Energy.gov [DOE]

    Windows that emit light and are more energy efficient? Universal Displays PHOLED technology enables windows that have transparent light-emitting diodes in them.

  14. Flash protection controller

    DOE Patents [OSTI]

    Galbraith, Lee K. (Mountain View, CA)

    1981-01-01T23:59:59.000Z

    A controller provides a high voltage to maintain an electro-optic shutter in a transparent condition until a flash of light which would be harmful to personnel is sensed by a phototransistor. The controller then shorts the shutter to ground to minimize light transmission to the user and maintains light transmission at the pre-flash level for a predetermined time to allow the flash to subside. A log converter and differential trigger circuit keep the controller from being triggered by other light flashes which are not dangerous.

  15. PFP Emergency Lighting Study

    SciTech Connect (OSTI)

    BUSCH, M.S.

    2000-02-02T23:59:59.000Z

    NFPA 101, section 5-9 mandates that, where required by building classification, all designated emergency egress routes be provided with adequate emergency lighting in the event of a normal lighting outage. Emergency lighting is to be arranged so that egress routes are illuminated to an average of 1.0 footcandle with a minimum at any point of 0.1 footcandle, as measured at floor level. These levels are permitted to drop to 60% of their original value over the required 90 minute emergency lighting duration after a power outage. The Plutonium Finishing Plant (PFP) has two designations for battery powered egress lights ''Emergency Lights'' are those battery powered lights required by NFPA 101 to provide lighting along officially designated egress routes in those buildings meeting the correct occupancy requirements. Emergency Lights are maintained on a monthly basis by procedure ZSR-12N-001. ''Backup Lights'' are battery powered lights not required by NFPA, but installed in areas where additional light may be needed. The Backup Light locations were identified by PFP Safety and Engineering based on several factors. (1) General occupancy and type of work in the area. Areas occupied briefly during a shiftly surveillance do not require backup lighting while a room occupied fairly frequently or for significant lengths of time will need one or two Backup lights to provide general illumination of the egress points. (2) Complexity of the egress routes. Office spaces with a standard hallway/room configuration will not require Backup Lights while a large room with several subdivisions or irregularly placed rooms, doors, and equipment will require Backup Lights to make egress safer. (3) Reasonable balance between the safety benefits of additional lighting and the man-hours/exposure required for periodic light maintenance. In some plant areas such as building 236-Z, the additional maintenance time and risk of contamination do not warrant having Backup Lights installed in all rooms. Sufficient light for egress is provided by existing lights located in the hallways.

  16. Light modulating device

    DOE Patents [OSTI]

    Rauh, R.D.; Goldner, R.B.

    1989-12-26T23:59:59.000Z

    In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity are disclosed. 1 fig.

  17. Light modulating device

    DOE Patents [OSTI]

    Rauh, R. David (Newton, MA); Goldner, Ronald B. (Lexington, MA)

    1989-01-01T23:59:59.000Z

    In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity.

  18. Methods for measuring work surface illuminance in adaptive solid state lighting networks

    E-Print Network [OSTI]

    Lee, Byungkun

    The inherent control flexibility implied by solid-state lighting - united with the rich details offered by sensor networks - prompts us to rethink lighting control. In this research, we propose several techniques for ...

  19. Efficient tunable switch from slow light to fast light in quantum opto-electromechanical system

    E-Print Network [OSTI]

    M. Javed Akram; Khalid Naseer; Farhan Saif

    2015-03-05T23:59:59.000Z

    The control of slow and fast light propagation, in the probe transmission in a single experiment, is a challenging task. This type of control can only be achieved through highly nonlinear interactions and additional interfering pathway(s), which is therefore seldom reported. Here, we devise a scheme in which slow light, and a tunable switch from slow light to fast light can be achieved in the probe transmission based on a hybrid setup, which is composed of an optical cavity with two charged nano mechanical resonators (MRs). The two MRs are electrostatically coupled via tunable Coulomb coupling strength ($g_{c}$) making a quantum opto-electromechanical system (QOEMS). The parameter $g_{c}$ that couples the two MRs can be switched on and off by controlling the bias voltages on the MRs, and acts as a tunable switch that allows the propagation of transmitted probe field as slow light ($g_{c} \

  20. EK101 Engineering Light Project: Evaluate Residential Lighting

    E-Print Network [OSTI]

    Bifano, Thomas

    EK101 Engineering Light Project: Evaluate Residential Lighting Compare technical and economic characteristics of three sources of residential light. Two teams of four complete the same project Engineering Light Project: Evaluate Residential Lighting Project Assignment: Evaluate current options

  1. LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL

    E-Print Network [OSTI]

    Verderber, R.R.

    2010-01-01T23:59:59.000Z

    Increased Energy Cost (B$) @ $0.10 per kWh Decrease Energytypical energy costs ($0.05 to $0.10 per kWh), and standardand for energy costs of $0.05 and $0.10 per kWh for four

  2. Controls for Solid-State Lighting

    E-Print Network [OSTI]

    Rubinstein, Francis

    2007-01-01T23:59:59.000Z

    efficacy at 350 mA). As LED lamp current drops to under 10%saves energy but also extends LED lamp life because when theCRI LEDs might eventually replace RE phosphored lamps and

  3. Controlling X-rays With Light

    E-Print Network [OSTI]

    Glover, Ernie

    2010-01-01T23:59:59.000Z

    Author Contributions TEG, MPH, AB, SHS, LY contributed todesign of the experiment. TEG, MPH, BR were responsible forcontrol laser performance. TEG, MPH, SHS, TKA, JVT, EPK, BK,

  4. Northeast Energy Efficiency Partnerships: Advanced Lighting Controls |

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaeferAprilOverview | DepartmentofEmergingKevin Craft What are the keyDepartment

  5. Control Measures: Proper control measures ensure that

    E-Print Network [OSTI]

    Jia, Songtao

    during operation & maintenance. Engineering: Warning lights, Shutters/Attenuators, Beam Housings, Interlocks, Laser Curtains, Remote Firing Controls Administrative: Training, Written Standard Operating Procedures (SOPs), Posting Warnings Signs/Labels, & PPE. Personal Protective Equipment (PPE): Laser

  6. OpenGL Lighting 13. OpenGL Lighting

    E-Print Network [OSTI]

    McDowell, Perry

    OpenGL Lighting 13. OpenGL Lighting Overview of Lighting in OpenGL In order for lighting to have an effect in OpenGL, two things are required: A light An object to be lit Lights can be set to any color determine how they reflect the light which hits them. The color(s) of an object is determined

  7. Advanced Lighting Program Development (BG9702800) Final Report

    SciTech Connect (OSTI)

    Rubinstein, Francis; Johnson, Steve

    1998-02-01T23:59:59.000Z

    The report presents a long-range plan for a broad-based, coordinated research, development and market transformation program for reducing the lighting energy intensities in commercial and residential buildings in California without compromising lighting quality. An effective program to advance lighting energy efficiency in California must be based on an understanding that lighting is a mature field and the lighting industry has developed many specialized products that meet a wide variety of light needs for different building types. Above all else, the lighting field is diverse and there are applications for a wide range of lighting products, systems, and strategies. Given the range of existing lighting solutions, an effective energy efficient lighting research portfolio must be broad-based and diverse to match the diversity of the lighting market itself. The belief that there is one solution--a magic bullet, such as a better lamp, for example--that will propel lighting efficiency across all uses to new heights is, in the authors' opinion, an illusion. A multi-path program is the only effective means to raising lighting efficiency across all lighting applications in all building types. This report presents a list of 27 lighting technologies and concepts (key activities) that could form the basis of a coordinated research and market transformation plan for significantly reducing lighting energy intensities in California buildings. The total 27 key activities into seven broad classes as follows: Light sources; Ballasts; Luminaires; Lighting Controls; Lighting Systems in Buildings; Human Factors and Education. Each of the above technology classes is discussed in terms of background, key activities, and the energy savings potential for the state. The report concludes that there are many possibilities for targeted research, development, and market transformation activities across all sectors of the building lighting industry. A concerted investment by the state to foster efficiency improvements in lighting systems in commercial and residential buildings would have a major positive impact on energy use and environmental quality in California.

  8. Sandia National Laboratories: Lighting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lighting Solid-State Lighting Science EFRC On November 11, 2010, in Welcome History of Incandescence History of LEDs Grand Challenges Our EFRC SSLS-EFRC Contacts News Publications...

  9. Metallic halide lights and lighting systems. (Latest citations from the US Patent Bibliographic file with exemplary claims). Published Search

    SciTech Connect (OSTI)

    Not Available

    1994-11-01T23:59:59.000Z

    The bibliography contains citations of selected patents concerning the design and operation of metallic halide lights and lighting systems. High pressure, high intensity, and low wattage discharge lamps are described. Citations discuss power sources, lamp life, lamp control circuits, thermal switches, and heat reflective coatings. Applications in sport stadium lighting, vehicle headlights, and crop-lighting are included. (Contains a minimum of 170 citations and includes a subject term index and title list.)

  10. EXTERIOR LIGHTING CASE STUDY CALIFORNIA LIGHTING TECHNOLOGY CENTER, UC DAVIS PHONE: (530) 747-3838 FAX: (530) 747-3812 CLTC.UCDAVIS.EDU

    E-Print Network [OSTI]

    California at Davis, University of

    . This energy waste can easily be averted by implementing energy-efficient light sources and lighting controls.S. health care facilities to install an energy-efficient, ultra-smart outdoor LED lighting system. The award schedules, light levels and time-out settings, monitor the system's energy use, and receive automated alerts

  11. Light emitting device comprising phosphorescent materials for white light generation

    DOE Patents [OSTI]

    Thompson, Mark E.; Dapkus, P. Daniel

    2014-07-22T23:59:59.000Z

    The present invention relates to phosphors for energy downconversion of high energy light to generate a broadband light spectrum, which emit light of different emission wavelengths.

  12. adaptive control scheme: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    systems concepts. Based Alpcan, Tansu 5 Adaptive predictive lighting controllers for daylight artificial light integrated schemes. Open Access Theses and Dissertations Summary:...

  13. Performance of Personal Workspace Controls Final Report

    SciTech Connect (OSTI)

    Rubinstein, Francis; Kiliccote, Sila; Loffeld, John; Pettler,Pete; Snook, Joel

    2004-12-01T23:59:59.000Z

    One of the key deliverables for the DOE-funded controls research at LBNL for FY04 was the development of a prototype Personal Workspace Control system. The successful development of this system is a critical milestone for the LBNL Lighting Controls Research effort because this system demonstrates how IBECS can add value to today's Task Ambient lighting systems. LBNL has argued that by providing both the occupant and the facilities manager with the ability to precisely control the operation of overhead lighting and all task lighting in a coordinated manner, that task ambient lighting can optimize energy performance and occupant comfort simultaneously [Reference Task Ambient Foundation Document]. The Personal Workspace Control system is the application of IBECS to this important lighting problem. This report discusses the development of the Personal Workspace Control to date including descriptions of the different fixture types that have been converted to IBECS operation and a detailed description of the operation of PWC Scene Controller, which provides the end user with precise control of his task ambient lighting system. The objective, from the Annual Plan, is to demonstrate improvements in efficiency, lighting quality and occupant comfort realized using Personal Workspace Controls (PWC) designed to optimize the delivery of lighting to the individual's workstation regardless of which task-ambient lighting solution is chosen. The PWC will be capable of controlling floor-mounted, desk lamps, furniture-mounted and overhead lighting fixtures from a personal computer and handheld remote. The PWC will use an environmental sensor to automatically monitor illuminance, temperature and occupancy and to appropriately modulate ambient lighting according to daylight availability and to switch off task lighting according to local occupancy. [Adding occupancy control to the system would blunt the historical criticism of occupant-controlled lighting - the tendency of the occupant to leave lights on]. The PWC will be an entirely open networking system in which all manufacturers of task lights, furniture-mounted lighting and ballast manufacturers can participate and have a business position.

  14. Light Rail Transit Strengthening

    E-Print Network [OSTI]

    Minnesota, University of

    Light Rail Transit Improving mobility Easing congestion Strengthening our communities Central Corridor Communicating to the Public During Major Construction May 25, 2011 #12;2 Light Rail Transit;Light Rail Transit Central Corridor Route and Stations 3 18 new stations 9.8 miles of new double

  15. Introduction: Why energy-effective lighting?

    SciTech Connect (OSTI)

    Johnson, K.R.

    1996-01-01T23:59:59.000Z

    Since the oil crisis of the 1970s, lighting applications have evolved from delamping to the energy-efficient components that have been the mainstay into the 1980s and early 1990s. This evolution has led the industry to the realization of the need to focus on energy-effective lighting. The quality of lighting must first be defined, and then the most energy-efficient technologies and systems available must be provided. Energy cost is the dominant cost of operating a lighting system, so as one moves down into lower wattages (down to 1 W/sq ft) and as regulations and needs in the commercial sector change, such as the continually increasing use of video display terminals, one must take productivity into account. Because it is hard to define productivity, it is difficult to prove an impact. It costs 20 to 50% more for a lighting system designer to focus on high-quality designs, taking into account the lighting needs versus simply installing fluorescent fixtures. It is important that changes in the lighting system do not negatively affect productivity, and enhancing the quality of lighting can prove to be a good investment. Achieving energy-effective lighting is difficult. It takes extra effort to define the metrics, combining the efficiency, controls, and quality indices. As a cost benefit, energy-efficiency improvements are important, and are both a utility issue and a customer issue. The energy savings can be used to invest in productivity improvement. Occupant comfort is paramount for energy-effective lighting and long-term effectiveness: if the customer isn`t satisfied with the lighting system, the system will not endure and will not produce lasting savings. Therefore, it`s important to invest in energy-efficiency, not through components but through energy-effective lighting. The productivity issues outwiegh any of the energy or investment issues.

  16. Metacapacitors for LED Lighting: Metacapacitors

    SciTech Connect (OSTI)

    None

    2010-09-02T23:59:59.000Z

    ADEPT Project: The CUNY Energy Institute is developing less expensive, more efficient, smaller, and longer-lasting power converters for energy-efficient LED lights. LEDs produce light more efficiently than incandescent lights and last significantly longer than compact fluorescent bulbs, but they require more sophisticated power converter technology, which increases their cost. LEDs need more sophisticated converters because they require a different type of power (low voltage direct current, or DC) than what's generally supplied by power outlets. The CUNY Energy Institute is developing sophisticated power converters for LEDs that contain capacitors made from new, nanoscale materials. Capacitors are electrical components that are used to store energy. CUNY's unique capacitors are configured with advanced power circuits to more efficiently control and convert power to the LED lighting source. They also eliminate the need for large magnetic components, instead relying on networks of capacitors that can be easily printed on plastic substrate. CUNY's prototype LED power converter already meets DOE's 2020 projections for the energy efficiency of LED power converters.

  17. Stationary light in cold atomic gases

    E-Print Network [OSTI]

    Gor Nikoghosyan; Michael Fleischhauer

    2009-09-16T23:59:59.000Z

    We discuss stationary light created by a pair of counter-propagating control fields in Lambda-type atomic gases with electromagnetically induced transparency for the case of negligible Doppler broadening. In this case the secular approximation used in the discussion of stationary light in hot vapors is no longer valid. We discuss the quality of the effective light-trapping system and show that in contrast to previous claims it is finite even for vanishing ground-state dephasing. The dynamics of the photon loss is in general non exponential and can be faster or slower than in hot gases.

  18. Light extraction from organic light-emitting diodes for lighting applications by sand-blasting

    E-Print Network [OSTI]

    Light extraction from organic light-emitting diodes for lighting applications by sand@ust.hk Abstract: Light extraction from organic light-emitting diodes (OLEDs) by scattering the light is one of the effective methods for large-area lighting applications. In this paper, we present a very simple and cost

  19. Photonic crystal light source

    DOE Patents [OSTI]

    Fleming, James G. (Albuquerque, NM); Lin, Shawn-Yu (Albuquerque, NM); Bur, James A. (Corrales, NM)

    2004-07-27T23:59:59.000Z

    A light source is provided by a photonic crystal having an enhanced photonic density-of-states over a band of frequencies and wherein at least one of the dielectric materials of the photonic crystal has a complex dielectric constant, thereby producing enhanced light emission at the band of frequencies when the photonic crystal is heated. The dielectric material can be a metal, such as tungsten. The spectral properties of the light source can be easily tuned by modification of the photonic crystal structure and materials. The photonic crystal light source can be heated electrically or other heating means. The light source can further include additional photonic crystals that exhibit enhanced light emission at a different band of frequencies to provide for color mixing. The photonic crystal light source may have applications in optical telecommunications, information displays, energy conversion, sensors, and other optical applications.

  20. Foundations and Light Compass Foundations and Light Compass

    E-Print Network [OSTI]

    Wong, Jennifer L.

    Foundations and Light Compass Case Study Foundations and Light Compass Case Study Jennifer L. WongQuantitative Sensor--centric Designcentric Design Light CompassLight Compass Models and Abstractions Contaminant Transport Marine Microorganisms Ecosystems, Biocomplexity What is a Light Compass?What is a Light

  1. Lighting and Surfaces 11.1 Introduction to Lighting

    E-Print Network [OSTI]

    Boyd, John P.

    Chapter 11 Lighting and Surfaces 11.1 Introduction to Lighting Three-dimensional surfaces can react to light, and how computer graphics simulates this. There are three species of light (or "illumination models"): 1. Intrinsic (self-emitting) 2. Ambient light (sometimes called "diffuse light") 3

  2. Arnold Schwarzenegger LIGHTING RESEARCH PROGRAM

    E-Print Network [OSTI]

    Project Summaries ELEMENT 2: ADVANCE LIGHTING TECHNOLOGIES PROJECT 2.1 LIGHT EMITTING DIODE (LED light emitting diodes (LED) technology for general lighting applications by developing a task lamp

  3. Indoor Lighting Overview Page 5-1 2008 Nonresidential Compliance Manual August 2009

    E-Print Network [OSTI]

    Indoor Lighting ­ Overview Page 5-1 2008 Nonresidential Compliance Manual August 2009 5 Indoor Lighting This chapter covers the requirements for indoor lighting design and installation, including controls. It is addressed primarily to lighting designers or electrical engineers and to enforcement agency

  4. Outdoor Lighting Overview Page 6-1 2008 Nonresidential Compliance Manual August 2009

    E-Print Network [OSTI]

    Outdoor Lighting ­ Overview Page 6-1 2008 Nonresidential Compliance Manual August 2009 6 Outdoor Lighting This chapter covers the requirements for outdoor lighting design and installation, including controls. This section applies to all outdoor lighting, whether attached to buildings, poles, structures

  5. High efficiency incandescent lighting

    DOE Patents [OSTI]

    Bermel, Peter; Ilic, Ognjen; Chan, Walker R.; Musabeyoglu, Ahmet; Cukierman, Aviv Ruben; Harradon, Michael Robert; Celanovic, Ivan; Soljacic, Marin

    2014-09-02T23:59:59.000Z

    Incandescent lighting structure. The structure includes a thermal emitter that can, but does not have to, include a first photonic crystal on its surface to tailor thermal emission coupled to, in a high-view-factor geometry, a second photonic filter selected to reflect infrared radiation back to the emitter while passing visible light. This structure is highly efficient as compared to standard incandescent light bulbs.

  6. National Synchrotron Light Source

    ScienceCinema (OSTI)

    BNL

    2009-09-01T23:59:59.000Z

    A tour of Brookhaven's National Synchrotron Light Source (NSLS), hosted by Associate Laboratory Director for Light Sources, Stephen Dierker. The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviolet, and x-ray light for basic and applied research in physics, chemistry, medicine, geophysics, environmental, and materials sciences.

  7. LED Lighting Retrofit

    E-Print Network [OSTI]

    Shaw-Meadow, N.

    2011-01-01T23:59:59.000Z

    ? Municipal Street Lighting Consortium ? American Public Power Association (APPA) ? Demonstration in Energy Efficiency Development (DEED) ? Source of funding and database of completed LED roadway projects 6 Rules of the Road ESL-KT-11-11-57 CATEE 2011..., 2011 ? 9 Solar-Assisted LED Case Study LaQuinta Hotel, Cedar Park, Texas ? Utilizes 18 - ActiveLED Solar-Assisted Parking Lot Lights ? Utilizes ?power management? to extend battery life while handling light output ? Reduces load which reduces PV...

  8. Edmund G. Brown Jr. LIGHTING CALIFORNIA'S FUTURE

    E-Print Network [OSTI]

    Edmund G. Brown Jr. Governor LIGHTING CALIFORNIA'S FUTURE: SMART LIGHT-EMITTING DIODE LIGHTING's Future: Smart LightEmitting Diode Lighting in Residential Fans. California Energy Commission, PIER

  9. Comparing Light Bulbs

    Broader source: Energy.gov [DOE]

    In this exercise, students will use a light to demonstrate the difference between being energy-efficient and energy-wasteful, and learn what energy efficiency means.

  10. Total Light Management

    Broader source: Energy.gov [DOE]

    Presentation covers total light management, and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.

  11. Lighting Technology Panel

    Broader source: Energy.gov [DOE]

    Presentation covers theLighting Technology Panel for the Federal Utility Partnership Working Group (FUPWG) meeting, held onNovember 18-19, 2009.

  12. Hybrid Solar Lighting

    SciTech Connect (OSTI)

    Maxey, L Curt [ORNL

    2008-01-01T23:59:59.000Z

    Hybrid solar lighting systems focus highly concentrated sunlight into a fiber optic bundle to provide sunlight in rooms without windows or conventional skylights.

  13. Solid-State Lighting

    Broader source: Energy.gov (indexed) [DOE]

    into the market. On the market side, DOE works closely with drivers, heat sinks, and optics. LEDs must be carefully energy efficiency program partners, lighting professionals,...

  14. Real-time Lighting System for Large Group Interaction Joshua Randall

    E-Print Network [OSTI]

    Real-time Lighting System for Large Group Interaction Joshua Randall Massachusetts Institute of Technology May 2002 Abstract Lighting systems have historically been controlled by an individual or small group of human operators working together in real-time. Applications for real-time lighting control

  15. EXTERIOR LIGHTING CASE STUDY For more information, visit PARTNERSHIPDEMONSTRATIONS.ORG

    E-Print Network [OSTI]

    California at Davis, University of

    EXTERIOR LIGHTING CASE STUDY » For more information, visit PARTNERSHIPDEMONSTRATIONS.ORG In 2013, UC Santa Barbara partnered with the SPEED team to demonstrate network controlled LED lighting sensors. These lighting controls allowed all the units to be incorporated into an adaptive mesh network

  16. Methods for measuring work surface illuminance in adaptive solid state lighting networks

    E-Print Network [OSTI]

    Methods for measuring work surface illuminance in adaptive solid state lighting networks Byungkun, MA 02139, USA ABSTRACT The inherent control flexibility implied by solid-state lighting ­ united with the rich details offered by sensor networks ­ prompts us to rethink lighting control. In this research, we

  17. Peak Power Reduction Strategies for the Lighting Systems in Government Buildings

    E-Print Network [OSTI]

    Al-Nakib, D.; Al-Mulla, A. A.; Maheshwari, G. P.

    2010-01-01T23:59:59.000Z

    fluorescent lamps with ECGs, CFLs, incandescent lamps and light emitting diodes (LEDs). The building has a peak load of around 2900 kW and it is mainly shared by A/C and lighting. Lighting system is controlled by DELMATIC software which controls...

  18. CX-004834: Categorical Exclusion Determination | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    CX-004834: Categorical Exclusion Determination Scott Jenkins Parking Lot Light Emitting Diode Lighting with Solar Arrays and On?site Electric Vehicle Charging Stations CX(s)...

  19. Materials for solid state lighting

    SciTech Connect (OSTI)

    Johnson, S.G.; Simmons, J.A.

    2002-03-26T23:59:59.000Z

    Dramatic improvement in the efficiency of inorganic and organic light emitting diodes (LEDs and OLEDs) within the last decade has made these devices viable future energy efficient replacements for current light sources. However, both technologies must overcome major technical barriers, requiring significant advances in material science, before this goal can be achieved. Attention will be given to each technology associated with the following major areas of material research: (1) material synthesis, (2) process development, (3) device and defect physics, and (4) packaging. The discussion on material synthesis will emphasize the need for further development of component materials, including substrates and electrodes, necessary for improving device performance. The process technology associated with the LEDs and OLEDs is very different, but in both cases it is one factor limiting device performance. Improvements in process control and methodology are expected to lead to additional benefits of higher yield, greater reliability and lower costs. Since reliability and performance are critical to these devices, an understanding of the basic physics of the devices and device failure mechanisms is necessary to effectively improve the product. The discussion will highlight some of the more basic material science problems remaining to be solved. In addition, consideration will be given to packaging technology and the need for the development of novel materials and geometries to increase the efficiencies and reliability of the devices. The discussion will emphasize the performance criteria necessary to meet lighting applications, in order to illustrate the gap between current status and market expectations for future product.

  20. Reducing home lighting expenses

    SciTech Connect (OSTI)

    Aimone, M.A.

    1981-02-01T23:59:59.000Z

    Ways to reduce lighting expenses are summarized. These include: turning off lights when not in use; keeping fixtures and lamps clean; replacing lamps with more efficient types; using three-way bulbs; use of daylighting; buying fewer lamps and reducing lamp wattage; consider repainting rooms; replacing recessed fixtures with tracklighting; and using efficient lamps for outdoor use. (MCW)

  1. Explosively pumped laser light

    DOE Patents [OSTI]

    Piltch, Martin S. (Los Alamos, NM); Michelotti, Roy A. (Los Alamos, NM)

    1991-01-01T23:59:59.000Z

    A single shot laser pumped by detonation of an explosive in a shell casing. The shock wave from detonation of the explosive causes a rare gas to luminesce. The high intensity light from the gas enters a lasing medium, which thereafter outputs a pulse of laser light to disable optical sensors and personnel.

  2. Light intensity compressor

    DOE Patents [OSTI]

    Rushford, Michael C. (Livermore, CA)

    1990-01-01T23:59:59.000Z

    In a system for recording images having vastly differing light intensities over the face of the image, a light intensity compressor is provided that utilizes the properties of twisted nematic liquid crystals to compress the image intensity. A photoconductor or photodiode material that is responsive to the wavelength of radiation being recorded is placed adjacent a layer of twisted nematic liquid crystal material. An electric potential applied to a pair of electrodes that are disposed outside of the liquid crystal/photoconductor arrangement to provide an electric field in the vicinity of the liquid crystal material. The electrodes are substantially transparent to the form of radiation being recorded. A pair of crossed polarizers are provided on opposite sides of the liquid crystal. The front polarizer linearly polarizes the light, while the back polarizer cooperates with the front polarizer and the liquid crystal material to compress the intensity of a viewed scene. Light incident upon the intensity compressor activates the photoconductor in proportion to the intensity of the light, thereby varying the field applied to the liquid crystal. The increased field causes the liquid crystal to have less of a twisting effect on the incident linearly polarized light, which will cause an increased percentage of the light to be absorbed by the back polarizer. The intensity of an image may be compressed by forming an image on the light intensity compressor.

  3. Resonant Visible Light Modulation with Graphene

    E-Print Network [OSTI]

    Yu, Renwen; de Abajo, F Javier Garcia

    2015-01-01T23:59:59.000Z

    Fast modulation and switching of light at visible and near-infrared (vis-NIR) frequencies is of utmost importance for optical signal processing and sensing technologies. No fundamental limit appears to prevent us from designing wavelength-sized devices capable of controlling the light phase and intensity at gigaherts (and even terahertz) speeds in those spectral ranges. However, this problem remains largely unsolved, despite recent advances in the use of quantum wells and phase-change materials for that purpose. Here, we explore an alternative solution based upon the remarkable electro-optical properties of graphene. In particular, we predict unity-order changes in the transmission and absorption of vis-NIR light produced upon electrical doping of graphene sheets coupled to realistically engineered optical cavities. The light intensity is enhanced at the graphene plane, and so is its absorption, which can be switched and modulated via Pauli blocking through varying the level of doping. Specifically, we explor...

  4. Lighting affects appearance LightSource emits photons

    E-Print Network [OSTI]

    Jacobs, David

    1 Lighting affects appearance #12;2 LightSource emits photons Photons travel in a straight line). And then some reach the eye/camera. #12;3 Reflectance Model how objects reflect light. Model light sources Algorithms for computing Shading: computing intensities within polygons Determine what light strikes what

  5. VIRTUAL LIGHT: DIGITALLY-GENERATED LIGHTING FOR VIDEO CONFERENCING APPLICATIONS

    E-Print Network [OSTI]

    Fisher, Kathleen

    VIRTUAL LIGHT: DIGITALLY-GENERATED LIGHTING FOR VIDEO CONFERENCING APPLICATIONS Andrea Basso method to improve the lighting conditions of a real scene or video sequence. In particular we concentrate on modifying real light sources intensities and inserting virtual lights into a real scene viewed from a fixed

  6. Light Duty Utility Arm Software Test Plan

    SciTech Connect (OSTI)

    Kiebel, G.R.

    1995-12-18T23:59:59.000Z

    This plan describes how validation testing of the software will be implemented for the integrated control and data acquisition system of the Light Duty Utility Arm System (LDUA). The purpose of LDUA software validation testing is to demonstrate and document that the LDUA software meets its software requirements specification.

  7. Efficient semiconductor light-emitting device and method

    DOE Patents [OSTI]

    Choquette, Kent D. (Albuquerque, NM); Lear, Kevin L. (Albuquerque, NM); Schneider, Jr., Richard P. (Albuquerque, NM)

    1996-01-01T23:59:59.000Z

    A semiconductor light-emitting device and method. The semiconductor light-emitting device is provided with at least one control layer or control region which includes an annular oxidized portion thereof to channel an injection current into the active region, and to provide a lateral refractive index profile for index guiding the light generated within the device. A periodic composition grading of at least one of the mirror stacks in the device provides a reduced operating voltage of the device. The semiconductor light-emitting device has a high efficiency for light generation, and may be formed either as a resonant-cavity light-emitting diode (RCLED) or as a vertical-cavity surface-emitting laser (VCSEL).

  8. Efficient semiconductor light-emitting device and method

    DOE Patents [OSTI]

    Choquette, K.D.; Lear, K.L.; Schneider, R.P. Jr.

    1996-02-20T23:59:59.000Z

    A semiconductor light-emitting device and method are disclosed. The semiconductor light-emitting device is provided with at least one control layer or control region which includes an annular oxidized portion thereof to channel an injection current into the active region, and to provide a lateral refractive index profile for index guiding the light generated within the device. A periodic composition grading of at least one of the mirror stacks in the device provides a reduced operating voltage of the device. The semiconductor light-emitting device has a high efficiency for light generation, and may be formed either as a resonant-cavity light-emitting diode (RCLED) or as a vertical-cavity surface-emitting laser (VCSEL). 12 figs.

  9. Daylight control system, device and method

    DOE Patents [OSTI]

    Paton, John Douglas

    2012-08-28T23:59:59.000Z

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  10. Daylight control system device and method

    DOE Patents [OSTI]

    Paton, John Douglas

    2007-03-13T23:59:59.000Z

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  11. Daylight control system device and method

    DOE Patents [OSTI]

    Paton, John Douglas

    2009-12-01T23:59:59.000Z

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  12. Lakeview Light and Power- Commercial Lighting Rebate Program

    Broader source: Energy.gov [DOE]

    Lakeview Light and Power offers a commercial lighting rebate program. Rebates apply to the installation of energy efficient lighting retrofits in non-residential buildings. The rebate program is...

  13. Green Light Pulse Oximeter

    DOE Patents [OSTI]

    Scharf, John Edward (Oldsmar, FL)

    1998-11-03T23:59:59.000Z

    A reflectance pulse oximeter that determines oxygen saturation of hemoglobin using two sources of electromagnetic radiation in the green optical region, which provides the maximum reflectance pulsation spectrum. The use of green light allows placement of an oximetry probe at central body sites (e.g., wrist, thigh, abdomen, forehead, scalp, and back). Preferably, the two green light sources alternately emit light at 560 nm and 577 nm, respectively, which gives the biggest difference in hemoglobin extinction coefficients between deoxyhemoglobin, RHb, and oxyhemoglobin, HbO.sub.2.

  14. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-06-08T23:59:59.000Z

    The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.

  15. Light pulse in {Lambda}-type cold-atom gases

    SciTech Connect (OSTI)

    Wei Ran; Deng Youjin; Chen Shuai; Chen Zengbing; Pan Jianwei [Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Zhao Bo [Institute for Theoretical physics, University of Innsbruck, A-6020 Innsbruck (Austria); Institute for Quantum Optics and Quantum Information of the Austrian Academy of Science, A-6020 Innsbruck (Austria)

    2010-04-15T23:59:59.000Z

    We investigate the behavior of the light pulse in {Lambda}-type cold-atom gases with two counter-propagating control lights with equal strength by directly simulating the dynamic equations and exploring the dispersion relation. Our analysis shows that, depending on the length L{sub 0} of the stored wave packet and the decay rate {gamma} of ground-spin coherence, the recreated light can behave differently. For long L{sub 0} and/or large {gamma}, a stationary light pulse is produced, while two propagating light pulses appear for short L{sub 0} and/or small {gamma}. In the {gamma}{yields}0 limit, the light always splits into two propagating pulses for a sufficiently long time. This scenario agrees with a recent experiment [Y.-W. Lin et al., Phys. Rev. Lett. 102, 213601 (2009)] where two propagating light pulses are generated in laser-cooled cold-atom ensembles.

  16. Evidence for light perception in a bioluminescent organ

    E-Print Network [OSTI]

    McFall-Ngai, Margaret

    Evidence for light perception in a bioluminescent organ Deyan Tonga , Natalia S. Rozasb , Todd H of Wisconsin, Madison, WI 53706; cDepartment of Ecology, Evolution, and Marine Biology, University species have been implicated in the perception and control of light emission, particularly

  17. Sandia Energy - (Lighting and) Solid-State Lighting: Science...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on the third and upcoming revolution (illumination). Topics cover the basics of light-emitting diode (LED) operation; a 200-year history of lighting technology; the importance of...

  18. Sandia National Laboratories: (Lighting and) Solid-State Lighting...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on the third and upcoming revolution (illumination). Topics cover the basics of light-emitting diode (LED) operation; a 200-year history of lighting technology; the importance of...

  19. Columbia Water and Light- HVAC and Lighting Efficiency Rebates

    Broader source: Energy.gov [DOE]

    Columbia Water and Light (CWL) offers rebates to its commercial and industrial customers for the purchase of high efficiency HVAC installations and efficient lighting. Incentives for certain...

  20. Reading Municipal Light Department- Business Lighting Rebate Program

    Broader source: Energy.gov [DOE]

    Reading Municipal Light Department (RMLD) offers incentives for non-residential customers to install energy efficient lights and sensors in existing facilities. In addition to rebates for the...

  1. Peninsula Light Company- Commercial Efficient Lighting Rebate Program

    Broader source: Energy.gov [DOE]

    Peninsula Light Company (PLC) offers a rebate program for commercial customers who wish to upgrade to energy efficient lighting. Participating customers must be served by PLC commercial service....

  2. Light Duty Combustion Research: Advanced Light-Duty Combustion...

    Broader source: Energy.gov (indexed) [DOE]

    duty Diesel Combustion Research Advanced Light-Duty Combustion Experiments Paul Miles Sandia National Laboratories Light-Duty Combustion Modeling Rolf Reitz University of Wisconsin...

  3. Comparison of Conventional Diesel and Reactivity Controlled Compressio...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Conventional Diesel and Reactivity Controlled Compression Ignition (RCCI) Combustion in a Light-Duty Engine Comparison of Conventional Diesel and Reactivity Controlled Compression...

  4. Light-induced torque at multipolar plasmon resonance

    E-Print Network [OSTI]

    Lee, Yoon Kyung (Yoon Kyung Eunnie)

    2013-01-01T23:59:59.000Z

    Light-matter interaction provides a powerful means to control mechanical excitation in the nanoscale. The efficiency of this interaction reaches maximum at optical resonance. By understanding and designing the electromagnetic ...

  5. Primal-dual coding to probe light transport

    E-Print Network [OSTI]

    O'Toole, Matthew

    We present primal-dual coding, a photography technique that enables direct fine-grain control over which light paths contribute to a photo. We achieve this by projecting a sequence of patterns onto the scene while the ...

  6. Sandia National Laboratories: solid-state lighting science

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Efficiency, Solid-State Lighting A new top-down method for fabricating gallium nitride (GaN) nanowires with precisely controlled geometries enables single-mode, rather than...

  7. Efficient Light Sources Today

    E-Print Network [OSTI]

    Hart, A. L.

    1982-01-01T23:59:59.000Z

    This paper reviews new lamp and lighting technology in terms of application and economic impact. Included are the latest advances in High Intensity Discharge systems, energy saving fluorescent lamps and ballasts, and the new state of the art high...

  8. Natural lighting and skylights

    E-Print Network [OSTI]

    Evans, Benjamin Hampton

    1961-01-01T23:59:59.000Z

    outlined herein, the feasibility of using scale models for studying skylights is also an established fact. The method of analysis by models can be a valuable tool to any designer who is concerned about day-lighting....

  9. National Synchrotron Light Source

    ScienceCinema (OSTI)

    None

    2010-01-08T23:59:59.000Z

    A tour of Brookhaven's National Synchrotron Light Source (NSLS). The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviole

  10. Light Vector Mesons

    E-Print Network [OSTI]

    Alexander Milov

    2008-12-21T23:59:59.000Z

    This article reviews the current status of experimental results obtained in the measurement of light vector mesons produced in proton-proton and heavy ion collisions at different energies. The review is focused on two phenomena related to the light vector mesons; the modification of the spectral shape in search of Chiral symmetry restoration and suppression of the meson production in heavy ion collisions. The experimental results show that the spectral shape of light vector mesons are modified compared to the parameters measured in vacuum. The nature and the magnitude of the modification depends on the energy density of the media in which they are produced. The suppression patterns of light vector mesons are different from the measurements of other mesons and baryons. The mechanisms responsible for the suppression of the mesons are not yet understood. Systematic comparison of existing experimental results points to the missing data which may help to resolve the problem.

  11. Light and Plants Plants use light to photosynthesize. Name two places that light can come from

    E-Print Network [OSTI]

    Koptur, Suzanne

    Light and Plants Plants use light to photosynthesize. Name two places that light can come from: 1 (CO2, a gas) from the air and turn it into SUGARS (food). This process is powered by energy from light plants) for energy. Photosynthetically Active Radiation (PAR) is a combination of red light and blue

  12. Light and Energy -Daylight measurements

    E-Print Network [OSTI]

    Light and Energy - Daylight measurements #12;Light and Energy - Daylight measurements Authors: Jens;3 Title Light and Energy Subtitle Daylight measurements Authors Jens Christoffersen, Ásta Logadóttir ........................................................................................................ 5 Daylight quantity

  13. Light as a Healing Mechanism

    E-Print Network [OSTI]

    Lingampalli, Nithya

    2013-01-01T23:59:59.000Z

    S. (1991). Meridians conduct light. Moskow: Raum and Zeit.the bodys absorption of light. Explore, 9(2), doi: https://01). The healing use of light and color. Health Care Design

  14. Solid state lighting component

    DOE Patents [OSTI]

    Yuan, Thomas; Keller, Bernd; Ibbetson, James; Tarsa, Eric; Negley, Gerald

    2010-10-26T23:59:59.000Z

    An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.

  15. Solid state lighting component

    DOE Patents [OSTI]

    Keller, Bernd; Ibbetson, James; Tarsa, Eric; Negley, Gerald; Yuan, Thomas

    2012-07-10T23:59:59.000Z

    An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.

  16. July 18, 2012 Using QECBs for Street Lighting Upgrades

    E-Print Network [OSTI]

    lighting technologies (e.g. light-emitting diodes, induction lighting) can reduce street light energy

  17. Sandia National Laboratories: White Light Creation Architectures

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Light Creation Architectures White Light Creation Architectures Overview of SSL White Light Creation Architectures The entire spectral range of visible light can be...

  18. Sandia National Laboratories: Lighting Developments to 2030

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ClimateLighting Developments to 2030 Lighting Developments to 2030 videobanner Lighting Technologies, Costs, and Energy Demand: Global Developments to 2030 V iew Slides: Lighting...

  19. Light Duty Efficient, Clean Combustion

    SciTech Connect (OSTI)

    Donald Stanton

    2010-12-31T23:59:59.000Z

    Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy's Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: (1) Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today's state-of-the-art diesel engine on the FTP city drive cycle; (2) Develop and design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements; (3) Maintain power density comparable to that of current conventional engines for the applicable vehicle class; and (4) Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: (1) A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target; (2) An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system; (3) Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system; (4) Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle - Additional technical barriers exist for the no NOx aftertreatment engine; (5) Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated; (6) The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing; (7) The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment; (8) The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment; (9) Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines); and (10) Key subsystems developed include - sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system. An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light-Duty Vehicles (ATP-LD) started in 2010.

  20. Light Duty Efficient, Clean Combustion

    SciTech Connect (OSTI)

    Stanton, Donald W

    2011-06-03T23:59:59.000Z

    Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energys Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: 1. Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over todays state-ofthe- art diesel engine on the FTP city drive cycle 2. Develop & design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements. 3. Maintain power density comparable to that of current conventional engines for the applicable vehicle class. 4. Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: ? A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target ? An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system ? Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system ? Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle Additional technical barriers exist for the no NOx aftertreatment engine ? Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated. ? The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing. ? The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment. ? The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment ? Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines) ? Key subsystems developed include sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light- Duty Vehicles (ATP-LD) started in 2010.

  1. Interior Light Level Measurements Appendix F -Interior Light Level Measurements

    E-Print Network [OSTI]

    Appendix F Interior Light Level Measurements #12;F.1 Appendix F - Interior Light Level. A potential concern is that a lower VT glazing may increase electric lighting use to compensate for lost qualify and quantify a representative loss of daylighting, and therefore electric lighting use

  2. Quasi light fields: extending the light field to coherent radiation

    E-Print Network [OSTI]

    Wornell, Gregory W.

    Quasi light fields: extending the light field to coherent radiation Anthony Accardi1,2 and Gregory light field, and for coherent radiation using electromagnetic field theory. We present a model of coherent image formation that strikes a balance between the utility of the light field

  3. Lighting affects appearance LightSource emits photons

    E-Print Network [OSTI]

    Jacobs, David

    1 Lighting affects appearance #12;2 LightSource emits photons Photons travel in a straight line). And then some reach the eye/camera. #12;3 Basic fact: Light is linear Double intensity of sources, double photons reaching eye. Turn on two lights, and photons reaching eye are same as sum of number when each

  4. Smart Lighting: A Second Wave in Solid State Lighting?

    E-Print Network [OSTI]

    Salama, Khaled

    Smart Lighting: A Second Wave in Solid State Lighting? OIDA Conference on Green Photonics Bob Karlicek Director, Smart Lighting Engineering Research Center Rensselaer Polytechnic Institute June 2010 #12;2 Outline The First Wave of Solid State Lighting Complex Dynamics in the Supply Chain What

  5. Biodiesel Effects on the Operation of U.S. Light-Duty Tier 2...

    Broader source: Energy.gov (indexed) [DOE]

    NOx Adsorber SCR System Summary and Conclusions Overview Evaluate the impact of Biodiesel fuel blends on the performance of advanced emission control systems for light-duty...

  6. Biodiesel Effects on the Operation of U.S. Light Duty Tier 2...

    Broader source: Energy.gov (indexed) [DOE]

    Test Results Summary and Conclusions Project Goals Evaluate the impact of Biodiesel fuel blends on the performance of advanced emission control systems for light-duty...

  7. Kansas City Power & Light- Commercial/Industrial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Standard incentives are available for lighting and controls; air conditioning, heat pumps, and chillers; pumps and variable frequency drives; appliances; business computing; food service and refr...

  8. Comparison of Conventional Diesel and Reactivity Controlled...

    Broader source: Energy.gov (indexed) [DOE]

    DEER 10182012 Comparison of Conventional Diesel and Reactivity Controlled Compression Ignition (RCCI) Combustion in a Light-Duty Engine Rolf D. Reitz and Sage L. Kokjohn Engine...

  9. Control Systems & LEED

    SciTech Connect (OSTI)

    Cooperman, Alissa; Dieckmann, John; Brodrick, James

    2012-06-01T23:59:59.000Z

    This article discusses the LEED guidelines (2009 v3), and corresponding points, that can only be attained using control systems for lighting, HVAC, and/or the entire building. Integrating and centralizing control systems allows for better building management, energy savings and can potentially award 29 points towards certification across the following categories: Sustainable Sites, Energy & Atmosphere, and Indoor Air Quality. In closing, potential energy savings are highlighted and the overall market potential for control systems are summarized.

  10. Control of Eggplant Yellows.

    E-Print Network [OSTI]

    Jones, S. E. (Sloan Earle)

    1942-01-01T23:59:59.000Z

    practical control of eggplant yellows was obtained by keep- ing the plants lightly covered with sulfur dust throughout the time they mere in the seedbed. This treatment plus two or more dust applications after the plants were set in the field gave even... better control of the di- sease, but, the additional applications were not found profitable. Satis- factory control of eggplant yellows was not obtained when dusting was begun after the disease appeared in the field. CONTENTS Page Introduction 5...

  11. Improved TPB-coated Light Guides for Liquid Argon TPC Light Detection Systems

    E-Print Network [OSTI]

    Z. Moss; L. Bugel; G. Collin; J. M. Conrad; B. J. P. Jones; J. Moon; M. Toups; T. Wongjirad

    2015-03-25T23:59:59.000Z

    Scintillation light produced in liquid argon (LAr) must be shifted from 128 nm to visible wavelengths in light detection systems used for liquid argon time-projection chambers (LArTPCs). To date, LArTPC light collection systems have employed tetraphenyl butadiene (TPB) coatings on photomultiplier tubes (PMTs) or plates placed in front of the PMTs. Recently, a new approach using TPB-coated light guides was proposed. In this paper, we report on light guides with improved attenuation lengths above 100 cm when measured in air. This is an important step in the development of meter-scale light guides for future LArTPCs. Improvements come from using a new acrylic-based coating, diamond-polished cast UV transmitting acrylic bars, and a hand-dipping technique to coat the bars. We discuss a model for connecting bar response in air to response in liquid argon and compare this to data taken in liquid argon. The good agreement between the prediction of the model and the measured response in liquid argon demonstrates that characterization in air is sufficient for quality control of bar production. This model can be used in simulations of light guides for future experiments.

  12. Light-Water Breeder Reactor

    DOE Patents [OSTI]

    Beaudoin, B. R.; Cohen, J. D.; Jones, D. H.; Marier, Jr, L. J.; Raab, H. F.

    1972-06-20T23:59:59.000Z

    Described is a light-water-moderated and -cooled nuclear breeder reactor of the seed-blanket type characterized by core modules comprising loosely packed blanket zones enriched with fissile fuel and axial zoning in the seed and blanket regions within each core module. Reactivity control over lifetime is achieved by axial displacement of movable seed zones without the use of poison rods in the embodiment illustrated. The seed is further characterized by a hydrogen-to-uranium-233 atom ratio in the range 10 to 200 and a uranium-233-to-thorium-232 atom ratio ranging from 0.012 to 0.200. The seed occupies from 10 to 35 percent of the core volume in the form of one or more individual islands or annuli. (NSA 26: 55130)

  13. Sneaky light stop

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Eifert, Till; Nachman, Benjamin

    2015-04-01T23:59:59.000Z

    A light supersymmetric top quark partner (stop) with a mass nearly degenerate with that of the standard model (SM) top quark can evade direct searches. The precise measurement of SM top properties such as the cross-section has been suggested to give a handle for this stealth stop scenario. We present an estimate of the potential impact a light stop may have on top quark mass measurements. The results indicate that certain light stop models may induce a bias of up to a few GeV, and that this effect can hide the shift in, and hence sensitivity from, cross-section measurements. Duemoreto the different initial states, the size of the bias is slightly different between the LHC and the Tevatron. The studies make some simplifying assumptions for the top quark measurement technique, and are based on truth-level samples.less

  14. Light harvesting arrays

    DOE Patents [OSTI]

    Lindsey, Jonathan S. (Raleigh, NC)

    2002-01-01T23:59:59.000Z

    A light harvesting array useful for the manufacture of devices such as solar cells comprises: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to the first electrode, each of the light harvesting rods comprising a polymer of Formula I: X.sup.1.paren open-st.X.sup.m+1).sub.m (I) wherein m is at least 1, and may be from two, three or four to 20 or more; X.sup.1 is a charge separation group (and preferably a porphyrinic macrocycle, which may be one ligand of a double-decker sandwich compound) having an excited-state of energy equal to or lower than that of X.sup.2, and X.sup.2 through X.sup.m+1 are chromophores (and again are preferably porphyrinic macrocycles).

  15. Procedure to Measure Indoor Lighting Energy Performance

    SciTech Connect (OSTI)

    Deru, M.; Blair, N.; Torcellini, P.

    2005-10-01T23:59:59.000Z

    This document provides standard definitions of performance metrics and methods to determine them for the energy performance of building interior lighting systems. It can be used for existing buildings and for proposed buildings. The primary users for whom these documents are intended are building energy analysts and technicians who design, install, and operate data acquisition systems, and who analyze and report building energy performance data. Typical results from the use of this procedure are the monthly and annual energy used for lighting, energy savings from occupancy or daylighting controls, and the percent of the total building energy use that is used by the lighting system. The document is not specifically intended for retrofit applications. However, it does complement Measurement and Verification protocols that do not provide detailed performance metrics or measurement procedures.

  16. Light-front chiral effective field theory

    SciTech Connect (OSTI)

    Mathiot, J.-F. [Laboratoire de Physique Corpusculaire (France)] [Laboratoire de Physique Corpusculaire (France); Tsirova, N. A., E-mail: ntsirova@ssu.samara.ru [Samara State University (Russian Federation)

    2013-11-15T23:59:59.000Z

    We propose a general framework to calculate the nonperturbative structure of relativistic bound state systems. The state vector of the bound state is calculated in the covariant formulation of light-front dynamics. In this scheme, the state vector is defined on the light front of general position {omega} {center_dot} x = 0, where {omega} is an arbitrary light-like four-vector. This enables a strict control of any violation of rotational invariance. The state vector is then decomposed in Fock components. Our formalism is applied to the description of the nucleon properties at low energy, in chiral perturbation theory. We also show that the use of a recently proposed regularization scheme, the so-called Taylor-Lagrange regularization scheme, is very adequate in order to treat divergences in this nonperturbative framework.

  17. Spin-orbit interactions of light

    E-Print Network [OSTI]

    Bliokh, K Y; Nori, F; Zayats, A V

    2015-01-01T23:59:59.000Z

    Light carries spin and orbital angular momentum. These dynamical properties are determined by the polarization and spatial degrees of freedom of light. Modern nano-optics, photonics, and plasmonics, tend to explore subwavelength scales and additional degrees of freedom of structured, i.e., spatially-inhomogeneous, optical fields. In such fields, spin and orbital properties become strongly coupled with each other. We overview the fundamental origins and important applications of the main spin-orbit interaction phenomena in optics. These include: spin-Hall effects in inhomogeneous media and at optical interfaces, spin-dependent effects in nonparaxial (focused or scattered) fields, spin-controlled shaping of light using anisotropic structured interfaces (metasurfaces), as well as robust spin-directional coupling via evanescent near fields. We show that spin-orbit interactions are inherent in all basic optical processes, and they play a crucial role at subwavelength scales and structures in modern optics.

  18. Radioluminescent lighting technology

    SciTech Connect (OSTI)

    Not Available

    1990-01-01T23:59:59.000Z

    The glow-in-the-dark stereotype that characterizes the popular image of nuclear materials is not accidental. When the French scientist, Henri Becquerel, first discovered radioactivity in 1896, he was interested in luminescence. Radioluminescence, the production of light from a mixture of energetic and passive materials, is probably the oldest practical application of the unstable nucleus. Tritium-based radioluminescent lighting, in spite of the biologically favorable character of the gaseous tritium isotope, was included in the general tightening of environmental and safety regulations. Tritium light manufacturers would have to meet two fundamental conditions: (1) The benefit clearly outweighed the risk, to the extent that even the perceived risk of a skeptical public would be overcome. (2) The need was significant enough that the customer/user would be willing and able to afford the cost of regulation that was imposed both in the manufacture, use and eventual disposal of nuclear materials. In 1981, researchers at Oak Ridge National Laboratory were investigating larger radioluminescent applications using byproduct nuclear material such as krypton-85, as well as tritium. By 1982, it appeared that large source, (100 Curies or more) tritium gas tube, lights might be useful for marking runways and drop zones for military operations and perhaps even special civilian aviation applications. The successful development of this idea depended on making the light bright enough and demonstrating that large gas tube sources could be used and maintained safely in the environment. This successful DOE program is now in the process of being completed and closed-out. Working closely with the tritium light industry, State governments and other Federal agencies, the basic program goals have been achieved. This is a detailed report of what they have learned, proven, and discovered. 91 refs., 29 figs., 5 tabs. (JF)

  19. Light-induced nuclear import of phytochrome-A:GFP fusion proteins is differentially regulated in transgenic tobacco

    E-Print Network [OSTI]

    Schfer, Eberhard

    Light-induced nuclear import of phytochrome-A:GFP fusion proteins is differentially regulated. Summary Phytochromes (phy) are a family of photoreceptors that control various aspects of light inductive light conditions and for the high irradiance response (HIR) under continuous far-red light. We

  20. High-Efficiency Nitride-Based Photonic Crystal Light Sources

    Broader source: Energy.gov [DOE]

    The University of California Santa Barbara (UCSB) is maximizing the efficiency of a white LED by enhancing the external quantum efficiency using photonic crystals to extract light that would normally be confined in a conventional structure. Ultimate efficiency can only be achieved by looking at the internal structure of light. To do this, UCSB is focusing on maximizing the light extraction efficiency and total light output from light engines driven by Gallium Nitride (GaN)-based LEDs. The challenge is to engineer large overlap (interaction) between modes and photonic crystals. The project is focused on achieving high extraction efficiency in LEDs, controlled directionality of emitted light, integrated design of vertical device structure, and nanoscale patterning of lateral structure.

  1. Solid State Lighting Program (Falcon)

    SciTech Connect (OSTI)

    Meeks, Steven

    2012-06-30T23:59:59.000Z

    Over the past two years, KLA-Tencor and partners successfully developed and deployed software and hardware tools that increase product yield for High Brightness LED (HBLED) manufacturing and reduce product development and factory ramp times. This report summarizes our development effort and details of how the results of the Solid State Light Program (Falcon) have started to help HBLED manufacturers optimize process control by enabling them to flag and correct identified killer defect conditions at any point of origin in the process manufacturing flow. This constitutes a quantum leap in yield management over current practice. Current practice consists of die dispositioning which is just rejection of bad die at end of process based upon probe tests, loosely assisted by optical in-line monitoring for gross process deficiencies. For the first time, and as a result of our Solid State Lighting Program, our LED manufacturing partners have obtained the software and hardware tools that optimize individual process steps to control killer defects at the point in the processes where they originate. Products developed during our two year program enable optimized inspection strategies for many product lines to minimize cost and maximize yield. The Solid State Lighting Program was structured in three phases: i) the development of advanced imaging modes that achieve clear separation between LED defect types, improves signal to noise and scan rates, and minimizes nuisance defects for both front end and back end inspection tools, ii) the creation of defect source analysis (DSA) software that connect the defect maps from back-end and front-end HBLED manufacturing tools to permit the automatic overlay and traceability of defects between tools and process steps, suppress nuisance defects, and identify the origin of killer defects with process step and conditions, and iii) working with partners (Philips Lumileds) on product wafers, obtain a detailed statistical correlation of automated defect and DSA map overlay to failed die identified using end product probe test results. Results from our two year effort have led to automated end-to-end defect detection with full defect traceability and the ability to unambiguously correlate device killer defects to optically detected features and their point of origin within the process. Success of the program can be measured by yield improvements at our partners facilities and new product orders.

  2. Windows and lighting program

    SciTech Connect (OSTI)

    Not Available

    1990-06-01T23:59:59.000Z

    More than 30% of all energy use in buildings is attributable to two sources: windows and lighting. Together they account for annual consumer energy expenditures of more than $50 billion. Each affects not only energy use by other major building systems, but also comfort and productivity -- factors that influence building economics far more than does direct energy consumption alone. Windows play a unique role in the building envelope, physically separating the conditioned space from the world outside without sacrificing vital visual contact. Throughout the indoor environment, lighting systems facilitate a variety of tasks associated with a wide range of visual requirements while defining the luminous qualities of the indoor environment. Windows and lighting are thus essential components of any comprehensive building science program. Despite important achievements in reducing building energy consumption over the past decade, significant additional savings are still possible. These will come from two complementary strategies: (1) improve building designs so that they effectively apply existing technologies and extend the market penetration of these technologies; and (2) develop advanced technologies that increase the savings potential of each application. Both the Windows and Daylighting Group and the Lighting System Research Group have made substantial contributions in each of these areas, and continue to do so through the ongoing research summarized here. 23 refs., 16 figs.

  3. AIRPORT LIGHTING Session Highlights

    E-Print Network [OSTI]

    Minnesota, University of

    Administration advisory circulars, available online at www.faa.gov or by mail at the following address: Federal Aviation Administration, Airports 800 Independence Ave. S.W. Washington, D.C. 20591 To qualify for federal AND NAVIGATIONAL AIDS A complete list of federal regulations for airfield lighting is located in Federal Aviation

  4. Tokyo Street Lights

    E-Print Network [OSTI]

    Hacker, Randi; Tsutsui, William

    2008-03-12T23:59:59.000Z

    that you have only 17, no 16, no 15 seconds left to get to the other side before the light changes and the impatient American drivers put the pedal to the metal and it's road kill time. Talk about stress! In Tokyo, crossing the street is a leisurely...

  5. Sweetness and light

    E-Print Network [OSTI]

    Craig, Katie

    2014-07-03T23:59:59.000Z

    1. Sweetness and Light. A novel. Judi lives in a nice, clean house with her seventeen year old stepson, who wont talk to her in anything but monosyllables. His father, Nelson, and she are struggling to relate to each ...

  6. Environmental and health aspects of lighting: Mercury

    SciTech Connect (OSTI)

    Clear, R.; Berman, S.

    1993-07-01T23:59:59.000Z

    Most discharge lamps, including fluorescent lamps, metal halide lamps, and high pressure sodium lamps, contain Mercury, a toxic chemical. Lighting professionals need to be able to respond to questions about the direct hazards of Mercury from accidentally breaking lamps, and the potential environmental hazards of lamp operation and disposal. We calculated the exposures that could occur from an accidental breakage of lamps. Acute poisoning appears almost impossible. Under some circumstances a sealed environment, such as a space station, could be contaminated enough to make it unhealthy for long-term occupation. Mercury becomes a potential environmental hazard after it becomes methylated. Mercury is methylated in aquatic environments, where it may accumulate in fish, eventually rendering them toxic to people and other animals. Lighting causes Mercury to enter the environment directly from lamp disposal, and indirectly from power plant emissions. The environmental tradeoffs between incandescent and discharge lamps depend upon the amounts released by these two sources, their local concentrations, and their probabilities of being methylated. Indirect environmental effects of lighting also include the release of other heavy metals (Cadmium, Lead and Arsenic), and other air pollutants and carbon dioxide that are emitted by fossil fuel power plants. For a given light output, the level of power plant emissions depends upon the efficacy of the light source, and is thus much larger for incandescent lamps than for fluorescent or discharge lamps. As disposal and control technologies change the relative direct and indirect emissions from discharge and incandescent lamps will change.

  7. MEMS `SMART DUST MOTES' FOR DESIGNING, MONITORING AND ENABLING EFFICIENT LIGHTING

    E-Print Network [OSTI]

    Agogino, Alice M.

    -based lighting system has the potential to achieve many environmental benefits in comparison to existing sensorMEMS `SMART DUST MOTES' FOR DESIGNING, MONITORING AND ENABLING EFFICIENT LIGHTING Alice M. Agogino focused on office lighting monitoring and control based on the new MEMS `smart dust mote' sensor

  8. Proceedings of DSCC 2014 ASME 2014 Dynamic Systems and Control Conference

    E-Print Network [OSTI]

    12180 Email: mishrs2@rpi.edu ABSTRACT State-of-the-Art feedback control of lighting depends on point of a light field and using these estimates for feedback control. Computer graphics software is used to effi measurements to estimate and control the light field in the room using an optimization-based feedback control

  9. Superposed Coherent and Squeezed Light

    E-Print Network [OSTI]

    Fesseha Kassahun

    2012-01-18T23:59:59.000Z

    We first calculate the mean photon number and quadrature variance of superposed coherent and squeezed light, following a procedure of analysis based on combining the Hamiltonians and using the usual definition for the quadrature variance of superposed light beams. This procedure of analysis leads to physically unjustifiable mean photon number of the coherent light and quadrature variance of the superposed light. We then determine both of these properties employing a procedure of analysis based on superposing the Q functions and applying a slightly modified definition for the quadrature variance of a pair of superposed light beams. We find the expected mean photon number of the coherent light and the quadrature variance of the superposed light. Moreover, the quadrature squeezing of the superposed output light turns out to be equal to that of the superposed cavity light.

  10. SPEED LIGHTING TECHNOLOGY SHOWCASE AT UC SANTA BARBARA

    E-Print Network [OSTI]

    California at Davis, University of

    and WattStopper Occupancy Sensor Lagoon Road NETWORKED RAODWAY LED Cree XSP Luminaire with LumewaveSwap with Lumewave Controls & WattStopper Occupancy Sensor ROADWAY LIGHTING Lagoon Road Initial pilot utilized Luminaire with Lumewave Controls Photo:zeronetenergy.blogspot.com ABOUT THE STATE PARTNERSHIP FOR ENERGY

  11. Transformations in Lighting: The Ninth Annual Solid-State Lighting...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    in DOE's "Transformations in Lighting" Solid-State Lighting (SSL) R&D Workshop. DOE SSL Portfolio Manager James Brodrick kicked off Day 1 by observing that although LED...

  12. Light cone matrix product

    SciTech Connect (OSTI)

    Hastings, Matthew B [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    We show how to combine the light-cone and matrix product algorithms to simulate quantum systems far from equilibrium for long times. For the case of the XXZ spin chain at {Delta} = 0.5, we simulate to a time of {approx} 22.5. While part of the long simulation time is due to the use of the light-cone method, we also describe a modification of the infinite time-evolving bond decimation algorithm with improved numerical stability, and we describe how to incorporate symmetry into this algorithm. While statistical sampling error means that we are not yet able to make a definite statement, the behavior of the simulation at long times indicates the appearance of either 'revivals' in the order parameter as predicted by Hastings and Levitov (e-print arXiv:0806.4283) or of a distinct shoulder in the decay of the order parameter.

  13. Nonequilibrium lighting plasmas

    SciTech Connect (OSTI)

    Dakin, J.T. (GE Lighting, Nela Park, Cleveland, OH (US))

    1991-12-01T23:59:59.000Z

    In this paper the science of a variety of devices employing nonequilibrium lighting plasmas is reviewed. The devices include the fluorescent lamp, the low-pressure sodium lamp, the neon sign, ultraviolet lamps, glow indicators, and a variety of devices used by spectroscopists, such as the hollow cathode light source. The plasma conditions in representative commercial devices are described. Recent research on the electron gas, the role of heavy particles, spatial and temporal inhomogeneities, and new electrodeless excitation schemes is reviewed. Areas of future activity are expected to be in new applications of high-frequency electronics to commercial devices, new laser-based diagnostics of plasma conditions, and more sophisticated models requiring more reliable and extensive rate coefficient data.

  14. The Advanced Light Source

    SciTech Connect (OSTI)

    Jackson, A.

    1991-05-01T23:59:59.000Z

    The Advanced Light Source (ALS), a national user facility currently under construction at the Lawrence Berkeley Laboratory (LBL), is a third-generation synchrotron light source designed to produce extremely bright beams of synchrotron radiation in the energy range from a few eV to 10 keV. The design is based on a 1--1.9-GeV electron storage ring (optimized at 1.5 GeV), and utilizes special magnets, known as undulators and wigglers (collectively referred to as insertion devices), to generate the radiation. The facility is scheduled to begin operating in April 1993. In this paper we describe the progress in the design, construction, and commissioning of the accelerator systems, insertion devices, and beamlines. Companion presentations at this conference give more detail of specific components in the ALS, and describe the activities towards establishing an exciting user program. 3 figs., 2 tabs.

  15. Scattering Of Light Nuclei

    SciTech Connect (OSTI)

    Quaglioni, S; Navratil, P; Roth, R

    2009-12-15T23:59:59.000Z

    The exact treatment of nuclei starting from the constituent nucleons and the fundamental interactions among them has been a long-standing goal in nuclear physics. Above all nuclear scattering and reactions, which require the solution of the many-body quantum-mechanical problem in the continuum, represent an extraordinary theoretical as well as computational challenge for ab initio approaches.We present a new ab initio many-body approach which derives from the combination of the ab initio no-core shell model with the resonating-group method [4]. By complementing a microscopic cluster technique with the use of realistic interactions, and a microscopic and consistent description of the nucleon clusters, this approach is capable of describing simultaneously both bound and scattering states in light nuclei. We will discuss applications to neutron and proton scattering on sand light p-shell nuclei using realistic nucleon-nucleon potentials, and outline the progress toward the treatment of more complex reactions.

  16. Fusion pumped light source

    DOE Patents [OSTI]

    Pappas, Daniel S. (Los Alamos, NM)

    1989-01-01T23:59:59.000Z

    Apparatus is provided for generating energy in the form of light radiation. A fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The neutron flux is coupled directly with the lasing medium. The lasing medium includes a first component selected from Group O of the periodic table of the elements and having a high inelastic scattering cross section. Gamma radiation from the inelastic scattering reactions interacts with the first component to excite the first component, which decays by photon emission at a first output wavelength. The first output wavelength may be shifted to a second output wavelength using a second liquid component responsive to the first output wavelength. The light outputs may be converted to a coherent laser output by incorporating conventional optics adjacent the laser medium.

  17. Solar light bulb

    SciTech Connect (OSTI)

    Smith, D.A.

    1983-07-26T23:59:59.000Z

    A system for generating light directly using solar energy is provided herein. It includes a concentrator and accumulator for the sun's rays to generate a concentrated beam of visible solar radiation. A distributor shaft is provided for distributing the beam of visible solar radiation. A fork is provided in the distributor shaft to define a plurality of branch lines, each provided with a mirror at the intersection to direct the beam down the respective branch line to permit parallel fractions of the beam to be reflected off the respective mirrors and to pass down the respective branch line. A solar bulb is provided including a double walled upper bulbous portion including the inlet from the branch line and a pair of heat outlet tubes, and a double walled lower bulbous portion, the upper portion thereof being divergently reflective, with the lower portion having walls which are either transparent or translucent to provide greater light diffusion, and the space between the two walls being maintained under vacuum to provide heat insulation values. A structure is provided within the solar bulb for the absorption and radiation of the concentrated beam of visible solar radiation. Preferably structure is provided connected to the solar bulb to draw in outside air in the summer to direct it past the solar bulb and to air vent hot air produced at the solar bulb to the outside, thereby providing light with minimal heat in the summer. The same structure is operated in the winter to draw in household air to direct it past the solar bulb and to recirculate such heated air produced at the solar bulb to the house, thereby providing light and heat in the winter.

  18. Hadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCD

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Blum, Thomas [Univ. of Connecticut, Storrs, CT (United States); Brookhaven National Lab., Upton, NY (United States); Chowdhury, Saumitra [Univ. of Connecticut, Storrs, CT (United States); Hayakawa, Masashi [Nagoya Univ. (Japan); Nishina Center, RIKEN, Wako, Saitama (Japan); Izubuchi, Taku [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-01T23:59:59.000Z

    The form factor that yields the light-by-light scattering contribution to the muon anomalous magnetic moment is computed in lattice QCD+QED and QED. A non-perturbative treatment of QED is used and is checked against perturbation theory. The hadronic contribution is calculated for unphysical quark and muon masses, and only the diagram with a single quark loop is computed. Statistically significant signals are obtained. Initial results appear promising, and the prospect for a complete calculation with physical masses and controlled errors is discussed.

  19. Turbo-Charged Lighting Design

    E-Print Network [OSTI]

    Clark, W. H. II

    TURBO-CHARGED LIGHTING DESIGN William H. Clark II Design Engineer O'Connell Robertson & Assoc Austin/ Texas ABSTRACT The task of the lighting designer has become very complex, involving thousands of choices for fixture types and hundreds...

  20. Webinar: Fuel Cell Mobile Lighting

    Broader source: Energy.gov [DOE]

    Video recording of the Fuel Cell Technologies Office webinar, Fuel Cell Mobile Lighting, originally presented on November 13, 2012.

  1. Faster than Light Quantum Communication

    E-Print Network [OSTI]

    A. Y. Shiekh

    2008-04-05T23:59:59.000Z

    Faster than light communication might be possible using the collapse of the quantum wave-function without any accompanying paradoxes.

  2. CX-011751: Categorical Exclusion Determination | Department of...

    Broader source: Energy.gov (indexed) [DOE]

    Categorical Exclusion Determination GreenLight Biosciences - Highly Productive Cell-free Bioconversion of Methane CX(s) Applied: B3.6 Date: 12122013 Location(s):...

  3. CX-009241: Categorical Exclusion Determination | Department of...

    Broader source: Energy.gov (indexed) [DOE]

    Categorical Exclusion Determination Development of Light Water Reactor Fuels Enhanced Accident Tolerance - Westinghouse Electric Company LLC CX(s) Applied: B3.6 Date: 09252012...

  4. STATE OF CALIFORNIA RESIDENTIAL LIGHTING

    E-Print Network [OSTI]

    STATE OF CALIFORNIA RESIDENTIAL LIGHTING CEC-CF-6R-LTG-01 (Revised 08/09) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-LTG-01 Residential Lighting (Page 1 of 6) Site Address: Enforcement Agency: Permit Number: 2008 Residential Compliance Forms August 2009 1. Kitchen Lighting Does project

  5. Arnold Schwarzenegger, LIGHTING RESEARCH PROGRAM

    E-Print Network [OSTI]

    ;#12;Prepared By: Lighting Research Center Andrew Bierman, Project Lead Troy, New York 12180 Managed ByArnold Schwarzenegger, Governor LIGHTING RESEARCH PROGRAM PROJECT 3.2 ENERGY EFFICIENT LOAD- SHEDDING LIGHTING TECHNOLOGY Prepared For: California Energy Commission Public Interest Energy Research

  6. Slow-light solitons revisited

    E-Print Network [OSTI]

    A. V. Rybin; I. P. Vadeiko; A. R. Bishop

    2006-08-16T23:59:59.000Z

    We investigate propagation of slow-light solitons in atomic media described by the nonlinear $\\Lambda$-model. Under a physical assumption, appropriate to the slow light propagation, we reduce the $\\Lambda$-scheme to a simplified nonlinear model, which is also relevant to 2D dilatonic gravity. Exact solutions describing various regimes of stopping slow-light solitons can then be readily derived.

  7. Lighting system combining daylight concentrators and an artificial source

    DOE Patents [OSTI]

    Bornstein, Jonathan G. (Miami, FL); Friedman, Peter S. (Toledo, OH)

    1985-01-01T23:59:59.000Z

    A combined lighting system for a building interior includes a stack of luminescent solar concentrators (LSC), an optical conduit made of preferably optical fibers for transmitting daylight from the LSC stack, a collimating lens set at an angle, a fixture for receiving the daylight at one end and for distributing the daylight as illumination inside the building, an artificial light source at the other end of the fixture for directing artifical light into the fixture for distribution as illumination inside the building, an automatic dimmer/brightener for the artificial light source, and a daylight sensor positioned near to the LSC stack for controlling the automatic dimmer/brightener in response to the daylight sensed. The system also has a reflector positioned behind the artificial light source and a fan for exhausting heated air out of the fixture during summer and for forcing heated air into the fixture for passage into the building interior during winter.

  8. Quantum spin Hall effect and topological insulators for light

    E-Print Network [OSTI]

    Bliokh, Konstantin Y

    2015-01-01T23:59:59.000Z

    We show that free-space light has intrinsic quantum spin-Hall effect (QSHE) properties. These are characterized by a non-zero topological spin Chern number, and manifest themselves as evanescent modes of Maxwell equations. The recently discovered transverse spin of evanescent modes demonstrates spin-momentum locking stemming from the intrinsic spin-orbit coupling in Maxwell equations. As a result, any interface between free space and a medium supporting surface modes exhibits QSHE of light with opposite transverse spins propagating in opposite directions. In particular, we find that usual isotropic metals with surface plasmon-polariton modes represent natural 3D topological insulators for light. Several recent experiments have demonstrated transverse spin-momentum locking and spin-controlled unidirectional propagation of light at various interfaces with evanescent waves. Our results show that all these experiments can be interpreted as observations of the QSHE of light.

  9. Development and Use of a Feedback Control System in Introducing Biotechnology Students to

    E-Print Network [OSTI]

    Allen, Gale

    departments at MSU Mankato. The air temperature near a small light bulb was controlled while the variables on the performance of the control loop. The air temperature near the bulb was monitored with a thermocouple producing conditioning amplifier Light bulb voltage driver Thermocouple and 12V automobile light bulb Light Bulb Driver

  10. Gain-assisted superluminal light propagation via incoherent pump field

    E-Print Network [OSTI]

    M. Mahmoudi; S. Worya Rabiei; L. Safari; M. Sahrai

    2008-08-03T23:59:59.000Z

    We investigate the dispersion and the absorption properties of a weak probe field in a three-level Lambda-type atomic system. We use just an incoherent field for controlling the group velocity of light. It is shown that the slope of dispersion changes from positive to negative just with changing the intensity of the indirect incoherent pumping field. Gain-assisted superluminal light propagation appears in this system. No laser field is used in the pumping processes.

  11. Sandia National Laboratories: efficient LED lighting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Partnership, Research & Capabilities, Solid-State Lighting Solid state lighting (SSL), which uses light-emitting diodes (LEDs), has the potential to be 10 times more energy...

  12. Sandia National Laboratories: Light Creation Materials

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    TechnologiesLight Creation Materials Light Creation Materials Overview of SSL Light Creation Materials Different families of inorganic semiconductor materials can...

  13. Ecological Consequences of Artificial Night Lighting

    E-Print Network [OSTI]

    Piselli, Kathy

    2006-01-01T23:59:59.000Z

    of Artificial Night Lighting Catherine Rich and Travisof artificial night lighting. This book provides editedage of modern urban lighting was ushered in. Coincidentally,

  14. Sandia National Laboratories: Solid-State Lighting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lighting Developments to 2030 On July 30, 2012, in Lighting Technologies, Costs, and Energy Demand: Global Developments to 2030 View Slides: Lighting Technologies, Costs, and...

  15. Demand Responsive Lighting: A Scoping Study

    E-Print Network [OSTI]

    Rubinstein, Francis; Kiliccote, Sila

    2007-01-01T23:59:59.000Z

    3 3.0 Previous Experience with Demand Responsive Lighting11 4.3. Prevalence of Lighting13 4.4. Impact of Title 24 on Lighting

  16. Municipal Consortium LED Street Lighting Workshop Presentations...

    Broader source: Energy.gov (indexed) [DOE]

    A Rational View of LM-79 Reports, IES Files, and Product Variation Gary Steinberg, GE Lighting Solutions Solid-State Street Lighting: Calculating Light Loss Factors Dana Beckwith,...

  17. Municipal Consortium LED Street Lighting Workshop Presentations...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    National Association of Energy Services Companies Calculating Light Loss Factors for Solid-State Lighting Systems Chad Stalker, Philips Lumileds Lighting Intro to MSSLC's...

  18. Light propagation and Imaging in Indefinite Metamaterials

    E-Print Network [OSTI]

    Yao, Jie

    2010-01-01T23:59:59.000Z

    photolithography by polarized light, Applied PhysicsZhang, Imaging visible light using anisotropic metamaterialcross-sectional review of the light propagation of TE mode (

  19. Advances in Lighting

    E-Print Network [OSTI]

    Tumber, A. J.

    1981-01-01T23:59:59.000Z

    colour rendition. The quartz-halogen incandescent lam s operate at higher temperatures, and have a somewhat higher efficacy, but they are rarely used except for special applicati ns. 3-2 High Intensity Discharge Lamps. Mercury is the grandfather... of the H.I.D. lamps. Its blue-green light, has been used almost exclusively for streetlighti and, often with colour-improving phospho it is still being used in industrial and commercial applications. Reactor-type ballasted mercury lamps can now...

  20. Pedestrian Friendly Outdoor Lighting

    SciTech Connect (OSTI)

    Miller, Naomi J.; Koltai, Rita; McGowan, Terry

    2013-12-31T23:59:59.000Z

    This GATEWAY report discusses the problems of pedestrian lighting that occur with all technologies with a focus on the unique optical options and opportunities offered by LEDs through the findings from two pedestrian-focused projects, one at Stanford University in California, and one at the Chautauqua Institution in upstate New York. Incorporating user feedback this report reviews the tradeoffs that must be weighed among visual comfort, color, visibility, efficacy and other factors to stimulate discussion among specifiers, users, energy specialists, and in industry in hopes that new approaches, metrics, and standards can be developed to support pedestrian-focused communities, while reducing energy use.

  1. Lighting Test Facilities

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let us countLighting Sign In About

  2. Lighting | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |Jilin ZhongdiantouLichuan City Yujiang River ValleyLighting

  3. Chiral meta-atoms rotated by light

    SciTech Connect (OSTI)

    Liu Mingkai; Powell, David A.; Shadrivov, Ilya V. [Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200 (Australia)

    2012-07-16T23:59:59.000Z

    We study the opto-mechanical properties of coupled chiral meta-atoms based on a pair of twisted split-ring resonators. By using a simple analytical model in conjunction with the Maxwell stress tensor, we capture insight into the mechanism and find that this structure can be used as a general prototype of subwavelength light-driven actuators over a wide range of frequencies. This coupled structure can provide a strong and tunable torque, and can support different opto-mechanical modes, including uniform rotation, periodically variable rotation and damped oscillations. Our results suggest that chiral meta-atoms are good candidates for creating sub-wavelength motors or wrenches controlled by light.

  4. Making More Light with Less Energy

    SciTech Connect (OSTI)

    Kuritzky, Leah; Jewell, Jason

    2013-07-18T23:59:59.000Z

    Representing the Center for Energy Efficient Materials (CEEM), this document is one of the entries in the Ten Hundred and One Word Challenge. As part of the challenge, the 46 Energy Frontier Research Centers were invited to represent their science in images, cartoons, photos, words and original paintings, but any descriptions or words could only use the 1000 most commonly used words in the English language, with the addition of one word important to each of the EFRCs and the mission of DOE: energy. The mission of the CEEM is to discover and develop materials that control the interactions among light, electricity, and heat at the nanoscale for improved solar energy conversion, solid-state lighting, and conversion of heat into electricity.

  5. Posters | Posters --721 Exploring lighting cultures

    E-Print Network [OSTI]

    Boyer, Edmond

    Posters | Posters -- 721 Exploring lighting cultures Beyond light and emotions Vincent LAGANIER 1 , Jasmine van der POL 2 1. Lighting Applications Services (LiAS), Philips Lighting, France vincent.laganier@philips.com 2

  6. Low-Pressure Sodium Lighting Basics

    Broader source: Energy.gov [DOE]

    Low-pressure sodium lighting provides more energy-efficient outdoor lighting than high-intensity discharge lighting, but it has very poor color rendition. Typical applications include highway and security lighting, where color is not important.

  7. Radioluminescent lighting for Alaskan runway lighting and marking

    SciTech Connect (OSTI)

    Jensen, G.A.; Leonard, L.E.

    1985-03-01T23:59:59.000Z

    Alaska and other far northern areas have special logistical, environmental, and economic problems that make radioluminescent (RL) lighting applications, especially in the area of airport lighting, an attractive alternative to electrical systems and flare pots. Tests and demonstrations of prototype systems conducted in Alaska over the past two years have proved the basic technological worth of RL airport lighting systems for civilian and military use. If regulatory issues and other factors identified during these tests can be favorably resolved and if the system and its components can be refined through production engineering, attractive applications for RL airfield lighting systems in Alaska and other remote locations could result.

  8. Energy Savings Estimates of Light Emitting Diodes in Niche Lighting...

    Office of Environmental Management (EM)

    in Niche Lighting Applications Prepared for: Building Technologies Program Office of Energy Efficiency and Renewable Energy U.S. Department of Energy Prepared by: Navigant...

  9. Embodied Energy and Off-Grid Lighting

    E-Print Network [OSTI]

    Alstone, Peter

    2012-01-01T23:59:59.000Z

    as a point of comparison with LED lighting product embodieda fairer comparison between off- grid LED lighting and other

  10. Overcoming Common Pitfalls: Energy Efficient Lighting Projects...

    Broader source: Energy.gov (indexed) [DOE]

    Overcoming Common Pitfalls: Energy Efficient Lighting Projects Overcoming Common Pitfalls: Energy Efficient Lighting Projects Transcript Presentation More Documents & Publications...

  11. Way Beyond Widgets: Delivering Integrated Lighting Design in Actionable Solutions

    SciTech Connect (OSTI)

    Myer, Michael; Richman, Eric E.; Jones, Carol C.

    2008-08-17T23:59:59.000Z

    Previously, energy-efficiency strategies for commercial spaces have focused on using efficient equipment without providing specific detailed instructions. Designs by experts in their fields are an energy-efficiency product in its own right. A new national program has developed interactive application-specific lighting designs for widespread use in four major commercial sectors. This paper will describe the technical basis for the solutions, energy efficiency and cost-savings methodology, and installations and measurement/verification to-date. Lighting designs have been developed for five types of retail stores (big box, small box, grocery, specialty market, and pharmacy) and are planned for the office, healthcare, and education sectors as well. Nationally known sustainable lighting designers developed the designs using high-performance commercially available products, daylighting, and lighting controls. Input and peer review was received by stakeholders, including manufacturers, architects, utilities, energy-efficiency program sponsors (EEPS), and end-users (i.e., retailers). An interactive web tool delivers the lighting solutions and analyzes anticipated energy savings using project-specific inputs. The lighting solutions were analyzed against a reference building using the space-by-space method as allowed in the Energy Standard for Buildings Except Low-Rise Residential Buildings (ASHRAE 2004) co-sponsored by the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) and the Illuminating Engineering Society of North America (IESNA). The results showed that the design vignettes ranged from a 9% to 28% reduction in the allowed lighting power density. Detailed control strategies are offered to further reduce the actual kilowatt-hour power consumption. When used together, the lighting design vignettes and control strategies show a modeled decrease in energy consumption (kWh) by 33% to 50% below the baseline design.

  12. Light Meson Distribution Amplitudes

    E-Print Network [OSTI]

    R. Arthur; P. A. Boyle; D. Brmmel; M. A. Donnellan; J. M. Flynn; A. Jttner; H. Pedroso de Lima; T. D. Rae; C. T. Sachrajda; B. Samways

    2010-11-12T23:59:59.000Z

    We calculated the first two moments of the light-cone distribution amplitudes for the pseudoscalar mesons ($\\pi$ and $K$) and the longitudinally polarised vector mesons ($\\rho$, $K^*$ and $\\phi$) as part of the UKQCD and RBC collaborations' $N_f=2+1$ domain-wall fermion phenomenology programme. These quantities were obtained with a good precision and, in particular, the expected effects of $SU(3)$-flavour symmetry breaking were observed. Operators were renormalised non-perturbatively and extrapolations to the physical point were made, guided by leading order chiral perturbation theory. The main results presented are for two volumes, $16^3\\times 32$ and $24^3\\times 64$, with a common lattice spacing. Preliminary results for a lattice with a finer lattice spacing, $32^3\\times64$, are discussed and a first look is taken at the use of twisted boundary conditions to extract distribution amplitudes.

  13. Ultrafast Magnetic Light

    E-Print Network [OSTI]

    Makarov, Sergey V; Krasnok, Alexander E; Belov, Pavel A

    2015-01-01T23:59:59.000Z

    We propose a novel concept for efficient dynamic tuning of optical properties of a high refractive index subwavelength nanoparticle with a magnetic Mie-type resonance by means of femtosecond laser radiation. This concept is based on ultrafast generation of electron-hole plasma within such nanoparticle, drastically changing its transient dielectric permittivity. This allows to manipulate by both electric and magnetic nanoparticle responses, resulting in dramatic changes of its extinction cross section and scattering diagram. Specifically, we demonstrate the effect of ultrafast switching-on a Huygens source in the vicinity of the magnetic dipole resonance. This approach enables to design ultrafast and compact optical switchers and modulators based on the "ultrafast magnetic light" concept.

  14. ANTENNA-COUPLED LIGHT-MATTER INTERACTIONS

    SciTech Connect (OSTI)

    NOVOTNY, LUKAS

    2014-01-10T23:59:59.000Z

    This project is focused on antenna-coupled photon emission from single quantum emitters. The properties of optical antennas are tailored to control different photophysical parameters, such as the excited state lifetime, the saturation intensity, and the quantum yield [3]. Using a single molecule coupled to an optical antenna whose position and properties can be controllably adjusted we established a detailed and quantitative understanding of light-matter interactions in nanoscale environments. We have studied various quantum emitters: single molecules [11], quantum dots [7], rareearth ions [2], and NV centers in diamond [19]. We have systematically studied the interaction of these emitters with optical antennas. The overall objective was to establish a high-level of control over the light-matter interaction. In order to eliminate the coupling to the environment, we have taken a step further and explored the possibility of levitating the quantum emitter in high vacuum. What started as a side-project soon became a main activity in our research program and led us to the demonstration of vacuum trapping and cooling of a nanoscale particle [14].

  15. Automatic Mechetronic Wheel Light Device

    DOE Patents [OSTI]

    Khan, Mohammed John Fitzgerald (Silver Spring, MD)

    2004-09-14T23:59:59.000Z

    A wheel lighting device for illuminating a wheel of a vehicle to increase safety and enhance aesthetics. The device produces the appearance of a "ring of light" on a vehicle's wheels as the vehicle moves. The "ring of light" can automatically change in color and/or brightness according to a vehicle's speed, acceleration, jerk, selection of transmission gears, and/or engine speed. The device provides auxiliary indicator lights by producing light in conjunction with a vehicle's turn signals, hazard lights, alarm systems, and etc. The device comprises a combination of mechanical and electronic components and can be placed on the outer or inner surface of a wheel or made integral to a wheel or wheel cover. The device can be configured for all vehicle types, and is electrically powered by a vehicle's electrical system and/or battery.

  16. anticorrelation light yield: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Light Engineering Websites Summary: Smart lighting: New Roles for Light in the Solid State Lighting World Robert F. Karlicek, Jr as the largest supplier of LED Lighting...

  17. LED Lighting Off the Grid

    Energy Savers [EERE]

    D. & Kammen, D. M. Decentralized energy systems for clean electricity access. Nature Climate Change accepted, in press, (2015). Off-Grid Status Quo : Fuel Based Lighting...

  18. Pedestrian-Friendly Nighttime Lighting

    Broader source: Energy.gov [DOE]

    This November 19, 2013 webinar presented issues and considerations related to pedestrian-friendly nighttime lighting, such as color rendering, safety, and adaptation. When it comes to outdoor...

  19. Linac Coherent Light Source Overview

    Broader source: Energy.gov [DOE]

    Take an animated tour of the Linac Coherent Light Source (LCLS). Follow the laser pulse from the injector gun all the way through to the Far Experimental Hall.

  20. Linac Coherent Light Source Overview

    SciTech Connect (OSTI)

    None

    2010-01-01T23:59:59.000Z

    Take an animated tour of the Linac Coherent Light Source (LCLS). Follow the laser pulse from the injector gun all the way through to the Far Experimental Hall.

  1. Utility lighting summit proves illuminating

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Utility-lighting-summit-proves-illuminating Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects...

  2. Linac Coherent Light Source Overview

    ScienceCinema (OSTI)

    None

    2013-05-29T23:59:59.000Z

    Take an animated tour of the Linac Coherent Light Source (LCLS). Follow the laser pulse from the injector gun all the way through to the Far Experimental Hall.

  3. Lighting with Paint FABIO PELLACINI

    E-Print Network [OSTI]

    Pellacini, Fabio

    Lighting with Paint FABIO PELLACINI Dartmouth College and FRANK BATTAGLIA, R. KEITH MORLEY, animation, rendering, optimization, painting ACM Reference Format: Pellacini, F., Battaglia, F., Morley, R

  4. Arnold Schwarzenegger LIGHTING RESEARCH PROGRAM

    E-Print Network [OSTI]

    Institute; David Shiller, Environmental Protection Agency. Program Advisory Committee: Ron Lewis Corporation; Don Aumann, California Lighting Technology Center; Holly Larsen, Larsen Communications

  5. Taking a Bite out of Lighting Loads

    E-Print Network [OSTI]

    Williams, S.

    2013-01-01T23:59:59.000Z

    = 100w PAR38 No maintenance for years ? 50,000 LED vs.10,000 CFL Improved light quality ? 80 CRI LED vs. 25 CRI HPS Reduce HVAC cooling load Advanced control options ESL-KT-13-12-34 CATEE 2013: Clean Air Through Energy Efficiency Conference, San... Fragile Durable Optical Efficiency 50 50 70-80 Indoor LED Advantages ESL-KT-13-12-34 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 Expected ROI 1.17 Years Case Study: LUGGAGE & LEATHER Sugar Land, Texas ESL-KT-13...

  6. Light-by-Light Scattering Effect in Light-Cone Supergraphs

    E-Print Network [OSTI]

    Renata Kallosh; Pierre Ramond

    2010-06-24T23:59:59.000Z

    We give a relatively simple explanation of the light-cone supergraph prediction for the UV properties of the maximally supersymmetric theories. It is based on the existence of a dynamical supersymmetry which is not manifest in the light-cone supergraphs. It suggests that N=4 supersymmetric Yang-Mills theory is UV finite and N=8 supergravity is UV finite at least until 7 loops whereas the $n$-point amplitudes have no UV divergences at least until $L=n+3$. Here we show that this prediction can be deduced from the properties of light-cone supergraphs analogous to the light-by-light scattering effect in QED. A technical aspect of the argument relies on the observation that the dynamical supersymmetry action is, in fact, a compensating field-dependent gauge transformation required for the retaining the light-cone gauge condition $A_+=0$.

  7. Hybrid Solar Lighting Provides Energy Savings and Reduces Waste Heat

    SciTech Connect (OSTI)

    Lapsa, Melissa Voss [ORNL; Maxey, L Curt [ORNL; Earl, Dennis Duncan [ORNL; Beshears, David L [ORNL; Ward, Christina D [ORNL; Parks, James Edgar [ORNL

    2006-01-01T23:59:59.000Z

    ABSTRACT Artificial lighting is the largest component of electricity use in commercial U.S. buildings. Hybrid solar lighting (HSL) provides an exciting new means of reducing energy consumption while also delivering significant ancillary benefits associated with natural lighting in buildings. As more than half of all federal facilities are in the Sunbelt region (defined as having an average direct solar radiation of greater than 4 kWh/m2/day) and as more than half of all square footage available in federal buildings is also in the Sunbelt, HSL is an excellent technology fit for federal facilities. The HSL technology uses a rooftop, 4-ft-wide dish and secondary mirror that track the sun throughout the day (Fig. 1). The collector system focuses the sunlight onto 127 optical fibers. The fibers serve as flexible light pipes and are connected to hybrid light fixtures that have special diffusion rods that spread out the light in all directions. One collector powers about eight hybrid light fixtures-which can illuminate about 1,000 square feet. The system tracks at 0.1 accuracy, required by the two-mirror geometry to keep the focused beam on the fiber bundle. When sunlight is plentiful, the optical fibers in the luminaires provide all or most of the light needed in an area. During times of little or no sunlight, a sensor controls the intensity of the artificial lamps to maintain a desired illumination level. Unlike conventional electric lamps, the natural light produces little to no waste heat and is cool to the touch. This is because the system's solar collector removes the infrared light-the part of the spectrum that generates a lot of the heat in conventional bulbs-from the sunlight.

  8. Low Voltage High Precision Spatial Light ModulatorsFinal Report

    SciTech Connect (OSTI)

    Papavasiliou, A P

    2005-02-09T23:59:59.000Z

    The goal of this project was to make LLNL a leader in Spatial Light Modulators (SLMs) by developing the technology that will be needed by the next generation of SLMs. We would use new lower voltage actuators and bond those actuators directly to controlling circuitry to break the fundamental limitations that constrain current SLM technology. This three-year project was underfunded in the first year and not funded in the second year. With the funding that was available, we produced actuators and designs for the controlling circuitry that would have been integrated in the second year. Spatial light modulators (SLMs) are arrays of tiny movable mirrors that modulate the wave-fronts of light. SLMs can correct aberrations in incoming light for adaptive optics or modulate light for beam control, optical communication and particle manipulation. MicroElectroMechanical Systems (MEMS) is a technology that utilizes the microfabrication tools developed by the semiconductor industry to fabricate a wide variety of tiny machines. The first generation of MEMS SLMs have improved the functionality of SLMs while drastically reducing per pixel cost making arrays on the order of 1000 pixels readily available. These MEMS SLMs however are limited by the nature of their designs to be very difficult to scale above 1000 pixels and have very limited positioning accuracy. By co-locating the MEMS mirrors with CMOS electronics, we will increase the scalability and positioning accuracy. To do this we will have to make substantial advances in SLM actuator design, and fabrication.

  9. High Efficiency, Illumination Quality OLEDs for Lighting

    SciTech Connect (OSTI)

    Joseph Shiang; James Cella; Kelly Chichak; Anil Duggal; Kevin Janora; Chris Heller; Gautam Parthasarathy; Jeffery Youmans; Joseph Shiang

    2008-03-31T23:59:59.000Z

    The goal of the program was to demonstrate a 45 lumen per watt white light device based upon the use of multiple emission colors through the use of solution processing. This performance level is a dramatic extension of the team's previous 15 LPW large area illumination device. The fundamental material system was based upon commercial polymer materials. The team was largely able to achieve these goals, and was able to deliver to DOE a 90 lumen illumination source that had an average performance of 34 LPW a 1000 cd/m{sup 2} with peak performances near 40LPW. The average color temperature is 3200K and the calculated CRI 85. The device operated at a brightness of approximately 1000cd/m{sup 2}. The use of multiple emission colors particularly red and blue, provided additional degrees of design flexibility in achieving white light, but also required the use of a multilayered structure to separate the different recombination zones and prevent interconversion of blue emission to red emission. The use of commercial materials had the advantage that improvements by the chemical manufacturers in charge transport efficiency, operating life and material purity could be rapidly incorporated without the expenditure of additional effort. The program was designed to take maximum advantage of the known characteristics of these material and proceeded in seven steps. (1) Identify the most promising materials, (2) assemble them into multi-layer structures to control excitation and transport within the OLED, (3) identify materials development needs that would optimize performance within multilayer structures, (4) build a prototype that demonstrates the potential entitlement of the novel multilayer OLED architecture (5) integrate all of the developments to find the single best materials set to implement the novel multilayer architecture, (6) further optimize the best materials set, (7) make a large area high illumination quality white OLED. A photo of the final deliverable is shown. In 2003, a large area, OLED based illumination source was demonstrated that could provide light with a quality, quantity, and efficiency on par with what can be achieved with traditional light sources. The demonstration source was made by tiling together 16 separate 6-inch x 6-inch blue-emitting OLEDs. The efficiency, total lumen output, and lifetime of the OLED based illumination source were the same as what would be achieved with an 80 watt incandescent bulb. The devices had an average efficacy of 15 LPW and used solution-processed OLEDs. The individual 6-inch x 6-inch devices incorporated three technology strategies developed specifically for OLED lighting -- downconversion for white light generation, scattering for outcoupling efficiency enhancement, and a scalable monolithic series architecture to enable large area devices. The downconversion approach consists of optically coupling a blue-emitting OLED to a set of luminescent layers. The layers are chosen to absorb the blue OLED emission and then luminescence with high efficiency at longer wavelengths. The composition and number of layers are chosen so that the unabsorbed blue emission and the longer wavelength re-emission combine to make white light. A downconversion approach has the advantage of allowing a wide variety of colors to be made from a limited set of blue emitters. In addition, one does not have to carefully tune the emission wavelength of the individual electro-luminescent species within the OLED device in order to achieve white light. The downconversion architecture used to develop the 15LPW large area light source consisted of a polymer-based blue-emitting OLED and three downconversion layers. Two of the layers utilized perylene based dyes from BASF AG of Germany with high quantum efficiency (>98%) and one of the layers consisted of inorganic phosphor particles (Y(Gd)AG:Ce) with a quantum efficiency of {approx}85%. By independently varying the optical density of the downconversion layers, the overall emission spectrum could be adjusted to maximize performance for lighting (e.g. blackbody temp

  10. Gallium nanoparticles grow where light is

    E-Print Network [OSTI]

    K. F. MacDonald; W. S. Brocklesby; V. I. Emelyanov; V. A. Fedotov; S. Pochon; K. J. Ross; G. Stevens; N. I. Zheludev

    2001-05-15T23:59:59.000Z

    The study of metallic nanoparticles has a long tradition in linear and nonlinear optics [1], with current emphasis on the ultrafast dynamics, size, shape and collective effects in their optical response [2-6]. Nanoparticles also represent the ultimate confined geometry:high surface-to-volume ratios lead to local field enhancements and a range of dramatic modifications of the material's properties and phase diagram [7-9]. Confined gallium has become a subject of special interest as the light-induced structural phase transition recently observed in gallium films [10, 11] has allowed for the demonstration of all-optical switching devices that operate at low laser power [12]. Spontaneous self-assembly has been the main approach to the preparation of nanoparticles (for a review see 13). Here we report that light can dramatically influence the nanoparticle self-assembly process: illumination of a substrate exposed to a beam of gallium atoms results in the formation of nanoparticles with a relatively narrow size distribution. Very low light intensities, below the threshold for thermally-induced evaporation, exert considerable control over nanoparticle formation through non-thermal atomic desorption induced by electronic excitation.

  11. Neural daylight control system

    E-Print Network [OSTI]

    Grif, Horatiu Stefan

    2010-01-01T23:59:59.000Z

    The paper describes the design, the implementation of a neural controller used in an automatic daylight control system. The automatic lighting control system (ALCS) attempt to maintain constant the illuminance at the desired level on working plane even if the daylight contribution is variable. Therefore, the daylight will represent the perturbation signal for the ALCS. The mathematical model of process is unknown. The applied structure of control need the inverse model of process. For this purpose it was used other artificial neural network (ANN) which identify the inverse model of process in an on-line manner. In fact, this ANN identify the inverse model of process + the perturbation signal. In this way the learning signal for neural controller has a better accuracy for the present application.

  12. Manufacturers of light sensitive devices need to measure the

    E-Print Network [OSTI]

    Langendoen, Koen

    and calibrating simultaneously Compared to a traditional solar simulator this new system is in control of output of light sensitive devices. The Solar cells testing system has won the Dutch Cleantech Challenge 2014 in the process of production, as it is time consuming to check each produced cell. A team of TU Delft scientists

  13. Estimation the Performance of Solar Fiber Optic Lighting System after Repairing the Glass Fiber Cables in a South Korean Residential Building

    E-Print Network [OSTI]

    Cha, K. S.; Kim, T. K.; Park, M. S.

    The solar fiber optic lighting system consists of the solar ray concentrating apparatus, the tracking control, lighting transmission and emission parts. This system was installed on a 20-storey apartment building in South Korea. Many residents had...

  14. OLED lighting devices having multi element light extraction and luminescence conversion layer

    DOE Patents [OSTI]

    Krummacher, Benjamin Claus (Regensburg, DE); Antoniadis, Homer (Mountain View, CA)

    2010-11-16T23:59:59.000Z

    An apparatus such as a light source has a multi element light extraction and luminescence conversion layer disposed over a transparent layer of the light source and on the exterior of said light source. The multi-element light extraction and luminescence conversion layer includes a plurality of light extraction elements and a plurality of luminescence conversion elements. The light extraction elements diffuses the light from the light source while luminescence conversion elements absorbs a first spectrum of light from said light source and emits a second spectrum of light.

  15. Device structure for OLED light device having multi element light extraction and luminescence conversion layer

    DOE Patents [OSTI]

    Antoniadis; Homer (Mountain View, CA), Krummacher; Benjamin Claus (Regensburg, DE)

    2008-01-22T23:59:59.000Z

    An apparatus such as a light source has a multi-element light extraction and luminescence conversion layer disposed over a transparent layer of the light source and on the exterior of said light source. The multi-element light extraction and luminescence conversion layer includes a plurality of light extraction elements and a plurality of luminescence conversion elements. The light extraction elements diffuses the light from the light source while luminescence conversion elements absorbs a first spectrum of light from said light source and emits a second spectrum of light.

  16. Summary of Initial Examination of Lighting-Only Utility Projects in the Federal Sector

    SciTech Connect (OSTI)

    Solana, Amy E.; Sandusky, William F.; Mcmordie, Katherine

    2007-07-26T23:59:59.000Z

    This work complements earlier work on an analysis of Federal utility energy projects that implemented excusively lighting upgrades. The objective of this analysis is to better understand the lighting-only projects through determination of the relationship of capital invested and the resulting energy and cost savings, in terms of geographic locale, project size, and potential according to specific lighting technologies and/or control technology implemented.

  17. Induction Lighting: An Old Lighting Technology Made New Again...

    Broader source: Energy.gov (indexed) [DOE]

    25 years if operated 10 hours a day. The technology, however, is far from new. Nikola Tesla demonstrated induction lighting in the late 1890s around the same time that his rival,...

  18. Using QECBs for Street Lighting Upgrades: Lighting the Way to...

    Broader source: Energy.gov (indexed) [DOE]

    Summarizes how the City of San Diego leveraged 13.1 million in qualified energy conservation bonds to increase the size of a street lighting upgrade project. Author: Lawrence...

  19. Quasi light fields: Extending the light field to coherent radiation

    E-Print Network [OSTI]

    Accardi, Anthony J.

    Imaging technologies such as dynamic viewpoint generation are engineered for incoherent radiation using the traditional light field, and for coherent radiation using electromagnetic field theory. We present a model of ...

  20. 46th Street Pilot Street Lighting Project

    E-Print Network [OSTI]

    Minnesota, University of

    Street to 48th Street) as standard high-pressure sodium (HPS) lighting comparison corridor #12;The over time #12;Initial Lighting Comparison #12;Lighting Project Location #12;Street Light Layout 3046th Street Pilot Street Lighting Project A Joint Venture: Hennepin County & City of Minneapolis

  1. Projection screen having reduced ambient light scattering

    DOE Patents [OSTI]

    Sweatt, William C. (Albuquerque, NM)

    2010-05-11T23:59:59.000Z

    An apparatus and method for improving the contrast between incident projected light and ambient light reflected from a projection screen are described. The efficiency of the projection screen for reflection of the projected light remains high, while permitting the projection screen to be utilized in a brightly lighted room. Light power requirements from the projection system utilized may be reduced.

  2. Inorganic volumetric light source excited by ultraviolet light

    DOE Patents [OSTI]

    Reed, S.; Walko, R.J.; Ashley, C.S.; Brinker, C.J.

    1994-04-26T23:59:59.000Z

    The invention relates to a composition for the volumetric generation of radiation. The composition comprises a porous substrate loaded with a component capable of emitting radiation upon interaction with an exciting radiation. Preferably, the composition is an aerogel substrate loaded with a component, e.g., a phosphor, capable of interacting with exciting radiation of a first energy, e.g., ultraviolet light, to produce radiation of a second energy, e.g., visible light. 4 figures.

  3. Using Dimmable Lighting for Regulation Capacity and Non-Spinning Reserves in the Ancillary Services Market. A Feasibility Study.

    SciTech Connect (OSTI)

    Rubinstein, Francis; Xiaolei, Li; Watson, David S.

    2010-12-03T23:59:59.000Z

    The objective of this Feasibility Study was to identify the potential of dimmable lighting for providing regulation capacity and contingency reserves if massively-deployed throughout the State. We found that one half of the total electric lighting load in the California commercial sector is bottled up in larger buildings that are greater an 50,000 square feet. Retrofitting large California buildings with dimmable lighting to enable fast DR lighting would require an investment of about $1.8 billion and a"fleet" of about 56 million dimming ballasts. By upgrading the existing installed base of lighting and controls (primarily in large commercial facilities) a substantial amount of ancillary services could be provided. Though not widely deployed, today's state-of-the art lighting systems, control systems and communication networks could be used for this application. The same lighting control equipment that is appropriate for fast DR is also appropriate for achieving energy efficiency with lighting on a daily basis. Thus fast DR can leverage the capabilities that are provided by a conventional dimming lighting control system. If dimmable lighting were massively deployed throughout large California buildings (because mandated by law, for example) dimmable lighting could realistically supply 380 MW of non-spinning reserve, 47percent of the total non-spinning reserves needed in 2007.

  4. Saturable absorption and 'slow light'

    E-Print Network [OSTI]

    Adrian C Selden

    2006-03-25T23:59:59.000Z

    Quantitative evaluation of some recent 'slow light' experiments based on coherent population oscillations (CPO) shows that they can be more simply interpreted as saturable absorption phenomena. Therefore they do not provide an unambiguous demonstration of 'slow light'. Indeed a limiting condition on the spectral bandwidth is not generally satisfied, such that the requirements for burning a narrow spectral hole in the homogeneously broadened absorption line are not met. Some definitive tests of 'slow light' phenomena are suggested, derived from analysis of phase shift and pulse delay for a saturable absorber

  5. Performance Stabilization of CdTe PV Modules using Bias and Light

    SciTech Connect (OSTI)

    Silverman, T. J.; Deceglie, M. G.; Marion, B.; Kurtz, S. R.

    2014-07-01T23:59:59.000Z

    Reversible performance changes due to light exposure frustrate repeatable performance measurements on CdTe PV modules. It is common to use extended light-exposure to ensure that measurements are representative of outdoor performance. We quantify the extent to which such a light-exposed state depends on module temperature and consider bias in the dark to aid in stabilization. We evaluate the use of dark forward bias to bring about a performance state equivalent to that obtained with light exposure, and to maintain a light-exposed state prior to STC performance measurement. Our results indicate that the most promising method for measuring a light-exposed state is to use light exposure at controlled temperature followed by prompt STC measurement with a repeatable time interval between exposure and the STC measurement.

  6. Portable leD ViDeo light SyStem USER'S GUIDE

    E-Print Network [OSTI]

    Jacobs, Laurence J.

    first use. Beyond the initial charge, no additional battery conditioning is required. a. PlugD lighting system 2 Package Contents 2 Miniburst Controllers & Connectors 4 Charging the battery 5 operatingBurst lights can be plugged directly into a standard AC outlet to power the unit for longer shoots. b. Battery

  7. Silicon Solar Cell Light-Trapping Using Defect Mode Photonic Kelsey A. Whitesell*a

    E-Print Network [OSTI]

    Atwater, Harry

    Silicon Solar Cell Light-Trapping Using Defect Mode Photonic Crystals Kelsey A. Whitesell to enhance performance of thin film solar cells because of their unique ability to control light. We show crystalline silicon solar cells of up to 205% from = 300nm to 1100nm compared to a planar cell

  8. Computational Light Routing: 3D Printed Optical Fibers for Sensing and Display

    E-Print Network [OSTI]

    Pereira, Thiago

    Despite recent interest in digital fabrication, there are still few algorithms that provide control over how light propagates inside a solid object. Existing methods either work only on the surface or restrict themselves ...

  9. Next Generation Light Source Workshops

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Next Generation Light Source Workshops A series of workshops will be held in late August with the goal of refining the scientific drivers for the facility and translating the...

  10. Columbia Water & Light- Solar Rebates

    Broader source: Energy.gov [DOE]

    Columbia Water & Light electric customers are eligible for a $400 rebate for the purchase of a new solar water heater. To apply for this rebate, a customer submits a pre-approval application to...

  11. Arnold Schwarzenegger LIGHTING RESEARCH PROGRAM

    E-Print Network [OSTI]

    ; James Bryan, Arden Realty; Peter Ngai, Peerless; David Malman, Architectural Lighting Design; Ron Lewis) ; Terry McGowan, ALA; Adriana Valencia (CPUC alternate). Program Advisory Committee: Ron Lewis; Holly Larsen, Larsen Communications. Please cite this repor

  12. Arnold Schwarzenegger LIGHTING RESEARCH PROGRAM

    E-Print Network [OSTI]

    Design Group; Bill Daiber, WFD Associates. Program Advisory Committee: Ron Lewis, Department of Energy Buchan, Sacramento Municipal Utility District. Editorial assistance: Holly Larsen, Larsen Communications Lighting Technology Center; Holly Larsen, Larsen Communications. Please cite

  13. Arnold Schwarzenegger LIGHTING RESEARCH PROGRAM

    E-Print Network [OSTI]

    the contribution of the below individuals: Program Advisory Committee: Ron Lewis, Department of Energy; Jerry Mills Lighting Technology Center; Holly Larsen, Larsen Communications. Please cite this report as follows

  14. Light Duty Vehicle CNG Tanks

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Light Duty Vehicle CNG Tanks Dane A. Boysen, PhD Program Director Advanced Research Projects Agency-Energy, US DOE dane.boysen@doe.gov Fiber Reinforced Polymer Composite...

  15. Demand Control Utilizing Energy Management Systems - Report of Field Tests

    E-Print Network [OSTI]

    Russell, B. D.; Heller, R. P.; Perry, L. W.

    1984-01-01T23:59:59.000Z

    Energy Management systems and particularly demand controllers are becoming more popular as commercial and light industrial operations attempt to reduce their electrical usage and demand. Numerous techniques are used to control energy use and demand...

  16. Novel phosphors for solid state lighting

    E-Print Network [OSTI]

    Furman, Joshua D

    2010-11-16T23:59:59.000Z

    Solid state white light emitting diode lighting devices outperform conventional light sources in terms of lifetime, durability, and lumens per watt. However, the capital contribution is still to high to encourage widespread adoption. Furthermore...

  17. Toward ZnO Light Emitting Diode

    E-Print Network [OSTI]

    Liu, Jianlin

    2008-01-01T23:59:59.000Z

    applications such as light emitting diodes (LEDs) and laser009 "Toward ZnO Light Emitting Diode" Jianlin Liu July 2008Title: Toward ZnO Light Emitting Diode Sponsor: UC Energy

  18. CAMPUS INFRASTRUCTURE & SERVICES CIS-Standard-Lighting

    E-Print Network [OSTI]

    Viglas, Anastasios

    ...........................................................................................................5 5.6 Light fittings and lux performance requirements for various University space types.....5 5...........................................................................12 5.8 EXTERIOR LIGHTING.......................................................................................................12 5.8.2 Exterior Light Poles, Fixings and Wiring

  19. EECBG Success Story: Lighting Retrofit Improving Visibility,...

    Broader source: Energy.gov (indexed) [DOE]

    New LED lighting fixtures (right) emit a whiter light than existing high-pressure sodium cobra head streetlights (left) and don't spill light onto nearby houses. | Photos courtesy...

  20. Embodied Energy and Off-Grid Lighting

    E-Print Network [OSTI]

    Alstone, Peter

    2012-01-01T23:59:59.000Z

    Self-reported Impacts of LED Lighting Technology Comparedto Fuel-based Lighting on Night Market Business Prosperity28, no. 4, pp. 533-546. Lighting Africa (prepared by Dalberg

  1. LIGHT SCATTERING STUDIES OF SILICA AEROGELS

    E-Print Network [OSTI]

    Hunt, A.J.

    2010-01-01T23:59:59.000Z

    van de Hulst, H.C. , Light Scattering by Small Particles,A New Polarization-Modulated Light Scattering Instrument,"and interpretation of light scattering effects in aerogels.

  2. Advanced Light Source Activity Report 2005

    E-Print Network [OSTI]

    Tamura Ed., Lori S.

    2010-01-01T23:59:59.000Z

    upgrade on the Advanced Light Source," Nucl. Instrum. Meth.n photoemission at the Advanced Light Source," Radit. Phys.high-pressure studies at the Advanced Light Source w i t h a

  3. Vids4Grids- Controls, Connectors & Surge Protectors

    Broader source: Energy.gov [DOE]

    Modernizing our grid means exciting new devices in the power sector. Find out how new lighting controls, connectors and surge protection will bring out electric grid to the next level.

  4. Controlling light at the nanoscale: imaging and spectroscopy...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    with spatial resolution down to nanometer length scales for, e.g., advanced solar energy and fuel cell applications. The extension of conventional optical spectroscopy to the...

  5. Tunable phase control for subluminal to superluminal light propagation

    E-Print Network [OSTI]

    Sahrai, M.; Tajalli, H.; Kapale, KT; Zubairy, M. Suhail

    2004-01-01T23:59:59.000Z

    -Arbiv, A. D. Wilson-Gordon, and H. Friedmann, Phys. Rev. A 63, 043818 (2001). [12] A. D. Wilson-Gordon and H. Friedmann, J. Mod. Opt. 49, 125 (2002). [13] G. S. Agarwal, T. N. Dey, and S. Menon, Phys. Rev. A 64, 053809 (2001). [14] A. Wicht, R.- H.... Ambertsumyan, V. S. Zuev, P. G. Kryukov, and V. S. Letokhov, Sov. Phys. JETP 23, 16 (1966). [3] A. M. Steinberg and R. Y. Chiao, Phys. Rev. A 49, 2071 (1994). [4] L. J. Wang, A. Kuzmich, and A. Dogariu, Nature (London) 406, 277 (2000). [5] M. S. Bigelow...

  6. Modeling in Control of the Advanced Light Source

    E-Print Network [OSTI]

    Bengtsson, J.

    2011-01-01T23:59:59.000Z

    to beam position monitors (BPM's) and correctors. In set-uses ideal betas and phases at the BPM'. and correctorsmodel and readings from the BPM'. to compute new corrector

  7. Control of Light-matter Interaction Using Dispersion Engineered Photonic

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract Management Fermi Site Office (FSO) FSO HomeContributed papers at

  8. Light-Duty Reactivity Controlled Compression Ignition Drive Cycle Fuel

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomy and Emissions Estimates | Department of Energy

  9. Northeast Energy Efficiency Partnerships: Advanced Lighting Controls - 2015

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment of Energy North AmericanDepartmentLauderdalePeer

  10. Using Light to Control How X Rays Interact with Matter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrinceton PlasmaAfternoon4.CCSM4large.jpgbriefingUsesUsing

  11. Using Light to Control How X Rays Interact with Matter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrinceton PlasmaAfternoon4.CCSM4large.jpgbriefingUsesUsingUsing

  12. Using Light to Control How X Rays Interact with Matter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrinceton PlasmaAfternoon4.CCSM4large.jpgbriefingUsesUsingUsingUsing

  13. Using Light to Control How X Rays Interact with Matter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrinceton

  14. List of Lighting Controls/Sensors Incentives | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano,LakefrontLighthouseEvaporativesource

  15. Using Light to Control How X Rays Interact with Matter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening aTurbulence mayUndergraduateAboutUserHadoop Using RunningJobUsing

  16. Using Light to Control How X Rays Interact with Matter

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening aTurbulence mayUndergraduateAboutUserHadoop Using

  17. Appraisers Project Plan: Wireless Controls and Retrofit LED Lighting

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments from Tarasa U.S.LLC | DepartmentReport |Strategies |

  18. How to Select Lighting Controls for Offices and Public Buildings |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEND D e e pShade Your Home inWillEnergyto

  19. Lighting and GeometryLighting and Geometry Prof. Michael Misha Kazhdan

    E-Print Network [OSTI]

    Frhlich, Peter

    Lighting and GeometryLighting and Geometry Prof. Michael Misha Kazhdan misha The viewer The lights N Viewer The lights The geometry The surface properties N L2 V Viewer L1Outline Surface Properties (Review) Lighting Lighting Geometry Geometry #12;Surface Properties (Review

  20. Is Light-Tree Structure Optimal for Multicast Routing in Sparse Light Splitting WDM Networks?

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Is Light-Tree Structure Optimal for Multicast Routing in Sparse Light Splitting WDM Networks? Fen session in sparse light splitting Wavelength Divi- sion Multiplexing (WDM) networks, a light as possible. Different from a light- tree, a light-hierarchy accepts cycles, which are used to traverse

  1. New Laser's "First Light" Shatters Record | Jefferson...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Jefferson National Accelerator Facility have delivered first light from their Free Electron Laser (FEL). Only 2 years after ground was broken for the FEL, infrared light of more...

  2. Sandia National Laboratories: Solid-State Lighting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    light, which could also impact so-called smart (or higher functionality) lighting, another . Among InGaN ... Research Challenge 3: Competing Radiative and...

  3. Indianapolis Power & Light- Business Energy Incentives Program

    Broader source: Energy.gov [DOE]

    The Indiana Power and Light Business (IPL) Energy Incentives Program assists commercial and industrial customers with reducing energy consumption through three common types of equipment: lighting,...

  4. OTEC- Commercial Lighting Retrofit Rebate Program

    Broader source: Energy.gov [DOE]

    The Oregon Trail Electric Consumers Cooperative (OTEC) offers a commercial lighting retrofit program that provides rebates for commercial businesses that change existing lighting to more energy...

  5. Light beam range finder

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-01-01T23:59:59.000Z

    A "laser tape measure" for measuring distance which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%.

  6. Light beam range finder

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-06-16T23:59:59.000Z

    A ``laser tape measure`` for measuring distance is disclosed which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%. 7 figs.

  7. Single-poly EEPROM cell with lightly doped MOS capacitors

    DOE Patents [OSTI]

    Riekels, James E. (New Hope, MN); Lucking, Thomas B. (Maple Grove, MN); Larsen, Bradley J. (Mound, MN); Gardner, Gary R. (Golden Valley, MN)

    2008-05-27T23:59:59.000Z

    An Electrically Erasable Programmable Read Only Memory (EEPROM) memory cell and a method of operation are disclosed for creating an EEPROM memory cell in a standard CMOS process. A single polysilicon layer is used in combination with lightly doped MOS capacitors. The lightly doped capacitors employed in the EEPROM memory cell can be asymmetrical in design. Asymmetrical capacitors reduce area. Further capacitance variation caused by inversion can also be reduced by using multiple control capacitors. In addition, the use of multiple tunneling capacitors provides the benefit of customized tunneling paths.

  8. Light-induced voltage alteration for integrated circuit analysis

    DOE Patents [OSTI]

    Cole, E.I. Jr.; Soden, J.M.

    1995-07-04T23:59:59.000Z

    An apparatus and method are described for analyzing an integrated circuit (IC). The invention uses a focused light beam that is scanned over a surface of the IC to generate a light-induced voltage alteration (LIVA) signal for analysis of the IC. The LIVA signal may be used to generate an image of the IC showing the location of any defects in the IC; and it may be further used to image and control the logic states of the IC. The invention has uses for IC failure analysis, for the development of ICs, for production-line inspection of ICs, and for qualification of ICs. 18 figs.

  9. Light with tunable non-Markovian phase imprint

    E-Print Network [OSTI]

    Fischer, Robert; Gilboa, Doron; Correia, Ricardo R B; Ribeiro-Teixeira, Ana C; Prado, Sandra D; Hickman, Jandir; Silberberg, Yaron

    2015-01-01T23:59:59.000Z

    We introduce a simple and flexible method to generate spatially non-Markovian light with tunable coherence properties in one and two dimensions. The unusual behavior of this light is demonstrated experimentally by probing the far field and recording its diffraction pattern after a double slit: In both cases we observe instead of a central intensity maximum a line or cross shaped dark region, whose width and profile depend on the non-Markovian coherence properties. Since these properties can be controlled and easily reproduced in experiment, the presented approach lends itself to serve as a testbed to gain a deeper understanding of non-Markovian processes.

  10. Daylighting controls; Orphan of HVAC design

    SciTech Connect (OSTI)

    Rundquist, R.A. (R.A. Rundquist Associates Inc., Northampton, MA (US))

    1991-11-01T23:59:59.000Z

    This paper reports that in the array of strategies employed for energy-efficient design and retrofitting in commercial buildings, the use of daylighting controls is often overlooked or omitted. Thus, daylighting controls are a worthy but neglected orphan of the design process, stranded between the lighting designer, architect and engineer. Most daylighting analysis ignores HVAC effects, despite obvious interactions between windows, heat-from-lights, and thermal loads.

  11. THE LUMINA PROJECT http://light.lbl.gov

    E-Print Network [OSTI]

    Jacobson, Arne

    components for the LED lights. #12;2 Introduction Solid-state lighting based on light emitting diode (LED

  12. Oscillating light wall above a sunspot light bridge

    E-Print Network [OSTI]

    Yang, Shuhong; Jiang, Fayu; Xiang, Yongyuan

    2015-01-01T23:59:59.000Z

    With the high tempo-spatial \\emph{Interface Region Imaging Spectrograph} 1330 {\\AA} images, we find that many bright structures are rooted in the light bridge of NOAA 12192, forming a \\emph{light wall}. The light wall is brighter than the surrounding areas, and the wall top is much brighter than the wall body. The New Vacuum Solar Telescope H$\\alpha$ and the \\emph{Solar Dynamics Observatory} 171 {\\AA} and 131 {\\AA} images are also used to study the light wall properties. In 1330 {\\AA}, 171 {\\AA}, and 131 {\\AA}, the top of the wall has a higher emission, while in the H$\\alpha$ line, the wall top emission is very low. The wall body corresponds to bright areas in 1330 {\\AA} and dark areas in the other lines. The top of the light wall moves upward and downward successively, performing oscillations in height. The deprojected mean height, amplitude, oscillation velocity, and the dominant period are determined to be 3.6 Mm, 0.9 Mm, 15.4 km s$^{-1}$, and 3.9 min, respectively. We interpret the oscillations of the lig...

  13. 10.1117/2.1201102.003543 Energy-efficient control of

    E-Print Network [OSTI]

    10.1117/2.1201102.003543 Energy-efficient control of solid-state lighting Joseph A. Paradiso additional energy savings. Lighting control is in the midst of radical change. Present- day state that tend to activate all lighting in a space when one occupant moves. This is generally energy wasteful

  14. CX-011384: Categorical Exclusion Determination | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Categorical Exclusion Determination Advanced Controls for the Multi-pod Centipod Wave Energy Converter Device CX(s) Applied: A9 Date: 12022013 Location(s): California...

  15. CX-012195: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Alfalfa Substation Control House Replacement CX(s) Applied: B4.11 Date: 05/02/2014 Location(s): Washington Offices(s): Bonneville Power Administration

  16. Dream controller

    DOE Patents [OSTI]

    Cheng, George Shu-Xing; Mulkey, Steven L; Wang, Qiang; Chow, Andrew J

    2013-11-26T23:59:59.000Z

    A method and apparatus for intelligently controlling continuous process variables. A Dream Controller comprises an Intelligent Engine mechanism and a number of Model-Free Adaptive (MFA) controllers, each of which is suitable to control a process with specific behaviors. The Intelligent Engine can automatically select the appropriate MFA controller and its parameters so that the Dream Controller can be easily used by people with limited control experience and those who do not have the time to commission, tune, and maintain automatic controllers.

  17. Demonstration Assessment of Light Emitting Diode (LED) Street...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Demonstration Assessment of Light Emitting Diode (LED) Street Lighting, Final Report Demonstration Assessment of Light Emitting Diode (LED) Street Lighting, Final Report This...

  18. LED Provides Effective and Efficient Parking Area Lighting at...

    Broader source: Energy.gov (indexed) [DOE]

    White Light Options for Parking Area Lighting Demonstration Assessment of Light Emitting Diode (LED) Street Lighting, Final Report Guide to FEMP-Designated Parking Lot...

  19. Demonstration Assessment of Light-Emitting Diode (LED) Freezer...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Demonstration Assessment of Light-Emitting Diode (LED) Freezer Case Lighting Demonstration Assessment of Light-Emitting Diode (LED) Freezer Case Lighting This document is a report...

  20. Light Field Denoising, Light Field Superresolution and Stereo Camera Based Refocussing using a GMM Light Field Patch Prior

    E-Print Network [OSTI]

    Mellor-Crummey, John

    Light Field Denoising, Light Field Superresolution and Stereo Camera Based Refocussing using a GMM Light Field Patch Prior Kaushik Mitra and Ashok Veeraraghavan ECE, Rice University Houston, Tx 77005 Kaushik.Mitra@rice.edu, vashok@rice.edu Abstract With the recent availability of commercial light field

  1. Tier 2 Useful Life (120,000 miles) Exhaust Emission Results for a NOx Adsorber and Diesel Particle Filter Equipped Light-Duty Diesel Vehicle

    SciTech Connect (OSTI)

    Tatur, M.; Tomazic, D.; Thornton, M.; Orban, J.; Slone, E.

    2006-05-01T23:59:59.000Z

    Investigates the emission control system performance and system desulfurization effects on regulated and unregulated emissions in a light-duty diesel engine.

  2. Dispersive approach to hadronic light-by-light scattering

    E-Print Network [OSTI]

    Gilberto Colangelo; Martin Hoferichter; Massimiliano Procura; Peter Stoffer

    2014-08-22T23:59:59.000Z

    Based on dispersion theory, we present a formalism for a model-independent evaluation of the hadronic light-by-light contribution to the anomalous magnetic moment of the muon. In particular, we comment on the definition of the pion pole in this framework and provide a master formula that relates the effect from pi pi intermediate states to the partial waves for the process gamma^* gamma^* --> pi pi. All contributions are expressed in terms of on-shell form factors and scattering amplitudes, and as such amenable to an experimental determination.

  3. Micro-valve pump light valve display

    DOE Patents [OSTI]

    Yeechun Lee.

    1993-01-19T23:59:59.000Z

    A flat panel display incorporates a plurality of micro-pump light valves (MLV's) to form pixels for recreating an image. Each MLV consists of a dielectric drop sandwiched between substrates, at least one of which is transparent, a holding electrode for maintaining the drop outside a viewing area, and a switching electrode from accelerating the drop from a location within the holding electrode to a location within the viewing area. The sustrates may further define non-wetting surface areas to create potential energy barriers to assist in controlling movement of the drop. The forces acting on the drop are quadratic in nature to provide a nonlinear response for increased image contrast. A crossed electrode structure can be used to activate the pixels whereby a large flat panel display is formed without active driver components at each pixel.

  4. Light-shining-through-walls with lasers

    E-Print Network [OSTI]

    Friederike Januschek

    2014-10-07T23:59:59.000Z

    Light-shining-through-walls experiments are the search experiments for weakly interacting slim particles (WISPs) with the smallest model dependence. They have the advantage that not only the detection, but also the production of the WISPs takes place in the laboratory and can thus be controlled. Using lasers is the preferred option for most of the mass region and has led to the world's most stringent laboratory limits (ALPS I) there. At CERN, OSQAR promises to surpass these and at DESY ALPS II is currently set up, which is planning to probe the axion-like particle to photon coupling down to $|g_{a\\gamma}|\\gtrsim 2\\cdot10^{-11}$ GeV$^{-1}$, which is in a region favored by many astrophysical hints.

  5. Electromagnetic reactions on light nuclei

    E-Print Network [OSTI]

    Sonia Bacca; Saori Pastore

    2014-07-13T23:59:59.000Z

    Electromagnetic reactions on light nuclei are fundamental to advance our understanding of nuclear structure and dynamics. The perturbative nature of the electromagnetic probes allows to clearly connect measured cross sections with the calculated structure properties of nuclear targets. We present an overview on recent theoretical ab-initio calculations of electron-scattering and photonuclear reactions involving light nuclei. We encompass both the conventional approach and the novel theoretical framework provided by chiral effective field theories. Because both strong and electromagnetic interactions are involved in the processes under study, comparison with available experimental data provides stringent constraints on both many-body nuclear Hamiltonians and electromagnetic currents. We discuss what we have learned from studies on electromagnetic observables of light nuclei, starting from the deuteron and reaching up to nuclear systems with mass number A=16.

  6. Enrichment of light hydrocarbon mixture

    DOE Patents [OSTI]

    Yang; Dali (Los Alamos, NM); Devlin, David (Santa Fe, NM); Barbero, Robert S. (Santa Cruz, NM); Carrera, Martin E. (Naperville, IL); Colling, Craig W. (Warrenville, IL)

    2010-08-10T23:59:59.000Z

    Light hydrocarbon enrichment is accomplished using a vertically oriented distillation column having a plurality of vertically oriented, nonselective micro/mesoporous hollow fibers. Vapor having, for example, both propylene and propane is sent upward through the distillation column in between the hollow fibers. Vapor exits neat the top of the column and is condensed to form a liquid phase that is directed back downward through the lumen of the hollow fibers. As vapor continues to ascend and liquid continues to countercurrently descend, the liquid at the bottom of the column becomes enriched in a higher boiling point, light hydrocarbon (propane, for example) and the vapor at the top becomes enriched in a lower boiling point light hydrocarbon (propylene, for example). The hollow fiber becomes wetted with liquid during the process.

  7. Enrichment of light hydrocarbon mixture

    DOE Patents [OSTI]

    Yang, Dali (Los Alamos, NM); Devlin, David (Santa Fe, NM); Barbero, Robert S. (Santa Cruz, NM); Carrera, Martin E. (Naperville, IL); Colling, Craig W. (Warrenville, IL)

    2011-11-29T23:59:59.000Z

    Light hydrocarbon enrichment is accomplished using a vertically oriented distillation column having a plurality of vertically oriented, nonselective micro/mesoporous hollow fibers. Vapor having, for example, both propylene and propane is sent upward through the distillation column in between the hollow fibers. Vapor exits neat the top of the column and is condensed to form a liquid phase that is directed back downward through the lumen of the hollow fibers. As vapor continues to ascend and liquid continues to countercurrently descend, the liquid at the bottom of the column becomes enriched in a higher boiling point, light hydrocarbon (propane, for example) and the vapor at the top becomes enriched in a lower boiling point light hydrocarbon (propylene, for example). The hollow fiber becomes wetted with liquid during the process.

  8. Light emitting ceramic device and method for fabricating the same

    DOE Patents [OSTI]

    Valentine, Paul; Edwards, Doreen D.; Walker Jr., William John; Slack, Lyle H.; Brown, Wayne Douglas; Osborne, Cathy; Norton, Michael; Begley, Richard

    2004-11-30T23:59:59.000Z

    A light-emitting ceramic based panel, hereafter termed "electroceramescent" panel, and alternative methods of fabrication for the same are claimed. The electroceramescent panel is formed on a substrate providing mechanical support as well as serving as the base electrode for the device. One or more semiconductive ceramic layers directly overlay the substrate, and electrical conductivity and ionic diffusion are controlled. Light emitting regions overlay the semiconductive ceramic layers, and said regions consist sequentially of a layer of a ceramic insulation layer and an electroluminescent layer, comprised of doped phosphors or the equivalent. One or more conductive top electrode layers having optically transmissive areas overlay the light emitting regions, and a multi-layered top barrier cover comprising one or more optically transmissive non-combustible insulation layers overlay said top electrode regions.

  9. Luminescence and Squeezing of a Superconducting Light Emitting Diode

    E-Print Network [OSTI]

    Patrik Hlobil; Peter P. Orth

    2015-05-11T23:59:59.000Z

    We investigate a semiconductor $p$-$n$ junction in contact with superconducting leads that is operated under forward bias as a light-emitting diode. The presence of superconductivity results in a significant increase of the electroluminescence in a certain frequency window. We demonstrate that the tunneling of Cooper pairs induces an additional luminescence peak on resonance. There is a transfer of superconducting to photonic coherence which results in the emission of entangled photon pairs and squeezing of the fluctuations in the quadrature amplitudes of the emitted light. The squeezing angle can be electrically manipulated by changing the relative phase of the order parameters in the superconductors. We finally derive the conditions for lasing in the system and show that the laser threshold is reduced due to superconductivity. This shows how macroscopic coherence of a superconductor can be used to control the properties of light.

  10. Luminescence and Squeezing of a Superconducting Light Emitting Diode

    E-Print Network [OSTI]

    Hlobil, Patrik

    2015-01-01T23:59:59.000Z

    We investigate a semiconductor $p$-$n$ junction in contact with superconducting leads that is operated under forward bias as a light-emitting diode. The presence of superconductivity results in a significant increase of the electroluminescence in a certain frequency window. We demonstrate that the tunneling of Cooper pairs induces an additional luminescence peak on resonance. There is a transfer of superconducting to photonic coherence which results in the emission of entangled photon pairs and squeezing of the fluctuations in the quadrature amplitudes of the emitted light. The squeezing angle can be electrically manipulated by changing the relative phase of the order parameters in the superconductors. We finally derive the conditions for lasing in the system and show that the laser threshold is reduced due to superconductivity. This shows how macroscopic coherence of a superconductor can be used to control the properties of light.

  11. Tunable light source for use in photoacoustic spectrometers

    DOE Patents [OSTI]

    Bisson, Scott E.; Kulp, Thomas J.; Armstrong, Karla M.

    2005-12-13T23:59:59.000Z

    The present invention provides a photoacoustic spectrometer that is field portable and capable of speciating complex organic molecules in the gas phase. The spectrometer has a tunable light source that has the ability to resolve the fine structure of these molecules over a large wavelength range. The inventive light source includes an optical parametric oscillator (OPO) having combined fine and coarse tuning. By pumping the OPO with the output from a doped-fiber optical amplifier pumped by a diode seed laser, the inventive spectrometer is able to speciate mixtures having parts per billion of organic compounds, with a light source that has a high efficiency and small size, allowing for portability. In an alternative embodiment, the spectrometer is scanned by controlling the laser wavelength, thus resulting in an even more compact and efficient design.

  12. Optical Manipulation of Light Scattering in Cold Atomic Rubidium

    E-Print Network [OSTI]

    R. G. Olave; A. L. Win; Kasie Kemp; S. J. Roof; S. Balik; M. D. Havey; I. M. Sokolov; D. V. Kupriyanov

    2014-06-23T23:59:59.000Z

    A brief perspective on light scattering in dense and cold atomic rubidium is presented. We particularly focus on the influence of auxiliary applied fields on the system response to a weak and nearly resonant probe field. Auxiliary fields can strongly disturb light propagation; in addition to the steady state case, dynamically interesting effects appear clearly in both the time domain, and in the optical polarization dependence of the processes. Following a general introduction, two examples of features found in such studies are presented. These include nonlinear optical effects in (a) comparative studies of forward- and fluorescence-configuration scattering under combined excitation of a control and probe field, and (b) manipulation of the spatial structure of the optical response due to a light shifting strong applied field.

  13. Luminescence and Squeezing of a Superconducting Light Emitting Diode

    E-Print Network [OSTI]

    Patrik Hlobil; Peter P. Orth

    2015-02-17T23:59:59.000Z

    We investigate a semiconductor $p$-$n$ junction in contact with superconducting leads that is operated under forward bias as a light-emitting diode. The presence of superconductivity results in a significant increase of the electroluminescence in a certain frequency window. We demonstrate that the tunneling of Cooper pairs induces an additional luminescence peak on resonance. There is a transfer of superconducting to photonic coherence which results in the emission of entangled photon pairs and squeezing of the fluctuations in the quadrature amplitudes of the emitted light. The squeezing angle can be electrically manipulated by changing the relative phase of the order parameters in the superconductors. We finally derive the conditions for lasing in the system and show that the laser threshold is reduced due to superconductivity. This shows how macroscopic coherence of a superconductor can be used to control the properties of light.

  14. Light and Color in Nature -Scattering Effects -

    E-Print Network [OSTI]

    Assarsson, Ulf

    1 Seminar WS 2003/04 Light and Color in Nature - Scattering Effects - Marcus Magnor WS03/04: Light and Color in Nature Scattering Overview Last Lecture Interference Today Light scattering: water rendering #12;2 WS03/04: Light and Color in Nature Scattering List of Topics Rainbow Stephan

  15. Today LED Holiday Lights, Tomorrow the World?

    SciTech Connect (OSTI)

    Gordon, Kelly L.

    2004-12-20T23:59:59.000Z

    This article for The APEM Advantage, the quarterly newsletter of the Association of Professional Energy Managers (APEM) describes the recent increase in the popularity of light emitting diode (LED) lighting and compares LED light output with that of incandescent and compact fluorescent lighting.

  16. National Synchrotron Light Source annual report 1991

    SciTech Connect (OSTI)

    Hulbert, S.L.; Lazarz, N.N. (eds.)

    1992-04-01T23:59:59.000Z

    This report contains abstracts from research conducted at the national synchrotron light source. (LSP)

  17. Nonimaging light concentrator with uniform irradiance

    DOE Patents [OSTI]

    Winston, Roland (Chicago, IL); Gee, Randy C. (Arvada, CO)

    2003-04-01T23:59:59.000Z

    A nonimaging light concentrator system including a primary collector of light, an optical mixer disposed near the focal zone for collecting light from the primary collector, the optical mixer having a transparent entrance aperture, an internally reflective housing for substantially total internal reflection of light, a transparent exit aperture and an array of photovoltaic cells disposed near the transparent exit aperture.

  18. Residential Lighting: Title 24 and Technology Update

    E-Print Network [OSTI]

    California at Davis, University of

    Residential Lighting: Title 24 and Technology Update Best practices in lighting design to comply with California's Title 24 energy code Kelly Cunningham, Outreach Director California Lighting Technology Center AS AN IMPLIED ENDORSEMENT. #12;INTRODUCTION California Lighting Technology Center, UC Davis To accelerate

  19. Light-Induced Atomic Desorption (LIAD)

    E-Print Network [OSTI]

    Budker, Dmitry

    in density n0=the initial density more intense higher density!! #12;Light Friquency Low light power (0.56m, polysiloxane, etc) #12;Time Dependence exposed to 514-nm desorbing light at room temperature (~20) density increase in density!! coating is replenished #12;Light Intensity 0=relative rate of increase of the vapor

  20. Creative and Constructive Play with Light

    E-Print Network [OSTI]

    9/19/12 1 Creative and Constructive Play with Light Presented by Krissy Opferman & Charline Tomer CMU Children's School PAEYC Conference on Play! September 21, 2012 Big Ideas for Light Central concepts to learn We need light to see things. Without light, we would not be able to see

  1. Light Induced Guard Cell Sunando Roy

    E-Print Network [OSTI]

    Albert, Rka

    Light Induced Guard Cell Signaling Sunando Roy #12;Guard cells and the stomata The tradeoff between water and carbon dioxide Roelfsema et. al. New Phytologist (2005) 167: 665 - 691 #12;The Light Signaling features The blue light signaling carried out through ion channels The red light signaling occurs

  2. Trapping Light With Mirrors David Milovich Jr.

    E-Print Network [OSTI]

    Milovich, David

    Trapping Light With Mirrors David Milovich Jr. February 20, 2004 Abstract. We show that, given finitely many line-segment mirrors in the plane, that do not touch, and an arbitrary point source of light emitted light beams escape. This result is shown to imply that, for a given point source of light

  3. National Synchrotron Light Source Activity Report 1998

    SciTech Connect (OSTI)

    Rothman, Eva

    1999-05-01T23:59:59.000Z

    National Synchrotron Light Source Activity Report for period October 1, 1997 through September 30, 1998

  4. Organic electroluminescent devices having improved light extraction

    DOE Patents [OSTI]

    Shiang, Joseph John (Niskayuna, NY)

    2007-07-17T23:59:59.000Z

    Organic electroluminescent devices having improved light extraction include a light-scattering medium disposed adjacent thereto. The light-scattering medium has a light scattering anisotropy parameter g in the range from greater than zero to about 0.99, and a scatterance parameter S less than about 0.22 or greater than about 3.

  5. Light celebrating place, West Texas Road Trip

    E-Print Network [OSTI]

    Mulholland, Jill Cecilia

    2009-05-15T23:59:59.000Z

    of Lighting Design: Speer and Hitler, 1936 Paris World?s Fair, German Pavilion .................................................................. 200 68 The History of Lighting Design: Speer and Hitler, 1937 Nuremburg Rally... ....................................................................................... 200 69 The History of Lighting Design: Speer and Hitler, 1938 Berlin Streets for a Mussolini Visit................................................... 201 70 Contemporary Light and Art: Patriotism and Memorial............................ 202...

  6. Visible Light Communications: Recent Activities in Japan

    E-Print Network [OSTI]

    L, James Jian-Qiang

    The Graduate School of System Design and Management, Keio University, Yokohama, Japan Smart Spaces: A Smart, visible light LEDs are beginning to be used in every home and office, which makes visible light LEDs ideal, and the market share of LED lighting will be more than 30 percent of total lighting market in 2016. Prediction

  7. Illuminating system and method for specialized and decorative lighting using liquid light guides

    DOE Patents [OSTI]

    Zorn, Carl J. (Yorktown, VA); Kross, Brian J. (Yorktown, VA); Majewski, Stanislaw (Grafton, VA); Wojcik, Randolph F. (Yorktown, VA)

    1998-01-01T23:59:59.000Z

    The present invention comprises an illumination system for specialized decorative lighting including a light source, a flexible plastic tube sheath for distributing the light to a remote location, a transparent liquid core filling the tube that has an index of refraction greater than that of the plastic tube and an arrangement where light coupled from the light source is caused to leak from the liquid light guide at desired locations for the purposes of specialized lighting, such as underwater illumination in swimming pools.

  8. Damage tolerant light absorbing material

    DOE Patents [OSTI]

    Lauf, Robert J. (Oak Ridge, TN); Hamby, Jr., Clyde (Harriman, TN); Akerman, M. Alfred (Knoxville, TN); Seals, Roland D. (Oak Ridge, TN)

    1993-01-01T23:59:59.000Z

    A light absorbing article comprised of a composite of carbon-bonded carbon fibers, prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000.degree. C. to form a carbon-bonded carbon fiber light absorbing composite article having a bulk density less than 1 g/cm.sup.3.

  9. Solid state electrochromic light modulator

    DOE Patents [OSTI]

    Cogan, S.F.; Rauh, R.D.

    1990-07-03T23:59:59.000Z

    An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counter electrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films. 4 figs.

  10. Solid state electrochromic light modulator

    SciTech Connect (OSTI)

    Cogan, Stuart F.; Rauh, R. David

    1993-12-07T23:59:59.000Z

    An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counterelectrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films.

  11. Solid state electrochromic light modulator

    DOE Patents [OSTI]

    Cogan, Stuart F. (111 Downey St., Norwood, MA 02062); Rauh, R. David (111 Downey St., Norwood, MA 02062)

    1990-01-01T23:59:59.000Z

    An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counterelectrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films.

  12. Solid state electrochromic light modulator

    SciTech Connect (OSTI)

    Cogan, Stuart F. (Sudbury, MA); Rauh, R. David (Newton, MA)

    1993-01-01T23:59:59.000Z

    An all solid-state variable transmission electrochromic device has a source of charge compensating ions. An inorganic oxide counterelectrode film which on reduction with the accompanying insertion of the charge compensating ions increases its transmission of light of predetermined wavelength is separated from a primary electrochromic film which on reduction with the accompanying insertion of the charge compensating ions decreases its transmission of light of predetermined wavelength by an insulating electrolyte film that transports the charge compensating ions. First and second electrodes are contiguous with the inorganic oxide counter electrode film and the primary electrochromic film, respectively, and separated by the three films.

  13. Damage tolerant light absorbing material

    DOE Patents [OSTI]

    Lauf, R.J.; Hamby, C. Jr.; Akerman, M.A.; Seals, R.D.

    1993-09-07T23:59:59.000Z

    A light absorbing article comprised of a composite of carbon-bonded carbon fibers, is prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000 C to form a carbon-bonded carbon fiber light absorbing composite article having a bulk density less than 1 g/cm[sup 3]. 9 figures.

  14. Review: Semiconductor Quantum Light Sources

    E-Print Network [OSTI]

    Andrew J Shields

    2007-04-03T23:59:59.000Z

    Lasers and LEDs display a statistical distribution in the number of photons emitted in a given time interval. New applications exploiting the quantum properties of light require sources for which either individual photons, or pairs, are generated in a regulated stream. Here we review recent research on single-photon sources based on the emission of a single semiconductor quantum dot. In just a few years remarkable progress has been made in generating indistinguishable single-photons and entangled photon pairs using such structures. It suggests it may be possible to realise compact, robust, LED-like semiconductor devices for quantum light generation.

  15. LED Lighting Facts®

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PM toLED Lighting Facts LED Lighting Facts LEDLED

  16. Strategy Guideline: High Performance Residential Lighting

    SciTech Connect (OSTI)

    Holton, J.

    2012-02-01T23:59:59.000Z

    The Strategy Guideline: High Performance Residential Lighting has been developed to provide a tool for the understanding and application of high performance lighting in the home. The high performance lighting strategies featured in this guide are drawn from recent advances in commercial lighting for application to typical spaces found in residential buildings. This guide offers strategies to greatly reduce lighting energy use through the application of high quality fluorescent and light emitting diode (LED) technologies. It is important to note that these strategies not only save energy in the home but also serve to satisfy the homeowner's expectations for high quality lighting.

  17. Plasma lighting, fiber optics, and daylight collectors: Toward the next revolution in high-efficiency illumination

    SciTech Connect (OSTI)

    Audin, L. [Columbia Univ., New York, NY (United States)

    1995-06-01T23:59:59.000Z

    Combining three recently marketed innovations may provide the next revolution in illumination, making many other recent advances eventually obsolete. The first is plasma lighting, pioneered by Fusion Lighting Inc. of Rockville, Maryland, and first commercially applied by Hutchins International Ltd. of Mississauga, Ontario. This microwave-generated light source yields very high-quality light with efficacies at or beyond high intensity discharge (HID) lamps. The source uses no mercury, thus eliminating lamp disposal problems, and has no cathode, thereby providing very long lamp life. Using no phosphors, it also has very short start and re-strike periods, and is dimmable. The second innovation is in the distribution of light. Commercial developments in fiber optics and light guides now provide products that transfer light from a remote point and distribute it like standard light fixtures. Advances in fiber optic communications and applications to decorative lighting have supplied relatively economical systems for mounting and directing light from both electric light sources and the sun. The third advance is a result of efforts to harness daylight. Unlike architectural daylighting that directs sunlight into perimeter areas through glazing, daylight collectors are roof-mounted devices that supply light to interior and underground spaces through hollow columns and open chases. Aided by improvements and cost reductions in sun-tracking (i.e., heliostatic) controls that capture and concentrate sunlight, such collectors offer a source of free light to locations that might otherwise never receive it. When combined together, these three options could offer a centralized building lighting system that pipes lumens to distribution devices replacing many existing lamps and fixtures.

  18. Breaking the light speed barrier

    E-Print Network [OSTI]

    O. I. Chashchina; Z. K. Silagadze

    2012-10-09T23:59:59.000Z

    As it is well known, classical special relativity allows the existence of three different kinds of particles: bradyons, luxons and tachyons. Bradyons have non-zero mass and hence always travel slower than light. Luxons are particles with zero mass, like the photon, and they always travel with invariant velocity. Tachyons are hypothetical superluminal particles that always move faster than light. The existence of bradyons and luxons is firmly established, while the tachyons were never reliably observed. In quantum field theory, the appearance of tachyonic degrees of freedom indicates vacuum instability rather than a real existence of the faster-than-light particles. However, recent controversial claims of the OPERA experiment about superluminal neutrinos triggered a renewed interest in superluminal particles. Driven by a striking analogy of the old Frenkel-Kontorova model of a dislocation dynamics to the theory of relativity, we conjecture in this note a remarkable possibility of existence of the fourth type of particles, elvisebrions, which can be superluminal. The characteristic feature of elvisebrions, distinguishing them from tachyons, is that they are outside the realm of special relativity and their energy remains finite (or may even turn to zero) when the elvisebrion velocity approaches the light velocity.

  19. The light meson spectroscopy program

    SciTech Connect (OSTI)

    Smith, Elton S. [JLAB

    2014-06-01T23:59:59.000Z

    Recent discoveries of a number of unexpected new charmomium-like meson states at the BaBar and Belle B-factories have demonstrated how little is still known about meson spectroscopy. In this talk we will review recent highlights of the light quark spectroscopy from collider and fixed target experiments.

  20. Slow light enhanced photon echoes

    E-Print Network [OSTI]

    J. Hahn; B. S. Ham

    2009-09-28T23:59:59.000Z

    We report a slow light-enhanced photon echo method, whose retrieval efficiency is two orders of magnitude higher than that of conventional photon echoes. The enhanced photon echo efficiency is due to lengthened interaction time given by ultraslow group velocity.

  1. Covered Product Category: Exterior Lighting

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program (FEMP) provides acquisition guidance and Federal efficiency requirements for outdoor wall-mounted light fixtures or luminaires, outdoor pole/arm-mounted area and roadway luminaires, outdoor pole/arm-mounted decorative luminaires, fuel pump canopy luminaires, bollards, and parking garage luminaires, all of which are FEMP-designated product categories.

  2. High Performance Outdoor Lighting Accelerator

    Broader source: Energy.gov [DOE]

    Hosted by the U.S. Department of Energy (DOE)s Weatherization and Intergovernmental Programs Office (WIPO), this webinar covered the expansion of the Better Buildings platform to include the newest initiative for the public sector: the High Performance Outdoor Lighting Accelerator (HPOLA).

  3. National Synchrotron Light Source II

    ScienceCinema (OSTI)

    Steve Dierker

    2010-01-08T23:59:59.000Z

    The National Synchrotron Light Source II (NSLS-II) at the U.S. Department of Energy's Brookhaven National Laboratory is a proposed new state-of-the-art medium energy storage ring designed to deliver world-leading brightness and flux with top-off operation

  4. Theory in Biology available light

    E-Print Network [OSTI]

    Nowak, Martin A.

    Magazine R406 Theory in Biology Theory is available light Martin A. Nowak Many people praise Gregor the neutral theory of evolution, which assumes that the overwhelming majority of molecular mutations do assume the neutral theory is correct. In a brilliant PhD thesis submitted in 1964, Bill Hamilton

  5. Enhanced coupling of light from organic light emitting diodes using nanoporous films

    E-Print Network [OSTI]

    Enhanced coupling of light from organic light emitting diodes using nanoporous films H. J. Peng, Y the light extraction efficiency for organic light emitting diode OLED . Nanoporous alumina film was used by Bragg scattering. The corrugated light- emitting diode had two-times the efficiency as compared

  6. CSC418 / CSCD18 / CSC2504 Basic Lighting and Reflection 8 Basic Lighting and Reflection

    E-Print Network [OSTI]

    Toronto, University of

    CSC418 / CSCD18 / CSC2504 Basic Lighting and Reflection 8 Basic Lighting and Reflection Up things, on the lighting that illuminates the scene, and on the interaction of light with the objects in the scene. Some of the basic qualitative properties of lighting and object reflectance that we need

  7. Light Collages: Lighting Design for Effective Visualization Chang Ha Lee Xuejun Hao Amitabh Varshney

    E-Print Network [OSTI]

    Varshney, Amitabh

    Light Collages: Lighting Design for Effective Visualization Chang Ha Lee Xuejun Hao Amitabh 20742 {chlee, hao, varshney}@cs.umd.edu ABSTRACT We introduce Light Collages a lighting design system perception of features with lighting that is locally consistent and globally inconsistent. Inspired

  8. Light extraction efficiency enhancement of InGaN quantum wells light-emitting diodes with

    E-Print Network [OSTI]

    Gilchrist, James F.

    Light extraction efficiency enhancement of InGaN quantum wells light-emitting diodes@lehigh.edu Abstract: Improvement of light extraction efficiency of InGaN light emitting diodes (LEDs) using microstructures on the light extraction efficiency of III-Nitride LEDs was studied. Depending on the size

  9. LightSlice: Matrix Slice Sampling for the Many-Lights Problem Dartmouth College

    E-Print Network [OSTI]

    Pellacini, Fabio

    LightSlice: Matrix Slice Sampling for the Many-Lights Problem Jiawei Ou Dartmouth College Fabio Pellacini Dartmouth College Figure 1: The light transport matrices of two complex scenes (subsampled from algorithm, LightSlice, effectively exploits these typical structures of light transport matrices

  10. Light is said to be reflected when the angle at which light

    E-Print Network [OSTI]

    Gilbes, Fernando

    1 #12;2 Light is said to be reflected when the angle at which light initially strikes a surface is equal to the angle at which light bounces off the same surface. In the diagram, light strikes a surface", this is an example of reflected light. Refraction is the bending of a wave when it enters a medium where it's speed

  11. Legislative Directive: EISA 2007, Subtitle B: Lighting Energy Efficiency

    Broader source: Energy.gov [DOE]

    Legislative Directive: EISA 2007, Subtitle B: Lighting Energy Efficiency, Sec. 321: Lighting Energy Efficiency

  12. National Synchrotron Light Source safety-analysis report

    SciTech Connect (OSTI)

    Batchelor, K. (ed.)

    1982-07-01T23:59:59.000Z

    This document covers all of the safety issues relating to the design and operation of the storage rings and injection system of the National Synchrotron Light Source. The building systems for fire protection, access and egress are described together with air and other gaseous control or venting systems. Details of shielding against prompt bremstrahlung radiation and synchrotron radiation are described and the administrative requirements to be satisfied for operation of a beam line at the facility are given.

  13. Method and apparatus for upshifting light frequency by rapid plasma creation

    DOE Patents [OSTI]

    Dawson, John M. (Pacific Palisades, CA); Wilks, Scott C. (Santa Monica, CA); Mori, Warren B. (Hermosa Beach, CA); Joshi, Chandrasekhar J. (Santa Monica, CA); Sessler, Andrew M. (Oakland, CA)

    1990-01-01T23:59:59.000Z

    Photons of an electromagnetic source wave are frequency-upshifted as a plasma is rapidly created around the path of this propagating source wave. The final frequency can be controlled by adjusting the gas density. A controlled time-varying frequency (chirped) pulse can be produced by using a controlled spatially varying gas density. The plasma must be created in a time which is short compared to the transit time of the light through the plasmas region. For very fast creation over one to at most a few light periods of an overdense plasma, static magnetic fields with short wavelengths are created.

  14. Branched Silver Nanowires as Controllable Plasmon Routers

    E-Print Network [OSTI]

    Wang, Wei Hua

    Branched Silver Nanowires as Controllable Plasmon Routers Yurui Fang, Zhipeng Li, Yingzhou Huang scattering spectroscopy, we investigate plasmon propagation on branched silver nanowires. By controlling the polarization of the incident laser light, the wire plasmons can be routed into different wire branches

  15. Light extraction enhanced white light-emitting diodes with multi-layered phosphor configuration

    E-Print Network [OSTI]

    You, Jiun Pyng; Tran, Nguyen T.; Shi, Frank G.

    2010-01-01T23:59:59.000Z

    and J. K. Kim, Solid-state light sources getting smart,power phosphor-converted light-emitting diodes based on III-for phosphor- based white-light-emitting diodes, Appl.

  16. Lighting system with thermal management system

    DOE Patents [OSTI]

    Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

    2013-05-07T23:59:59.000Z

    Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

  17. Optimization of environmental control to fit living space requirements

    E-Print Network [OSTI]

    Eckmann, Maxim S

    2013-02-22T23:59:59.000Z

    , or stereo are next, and control over the blinds are least important. Table 1 shows this hierarchy and related factors in the dormitory setting. Mr. Rawlings' Requirements Functions Thermostat & Blower Light Switches Wall Outlets Quantit S ecial R... uests Control of this function is very importank 2 (of 6) S ecial Considerations The fan blower is usually left at one setting. Control over the thermostat is the main roblem. Two of the four light switches in thc mom are connected...

  18. Aerospace Applications for OLED Lighting

    Energy Savers [EERE]

    2015 Boeing. All rights reserved. Export Controlled ECCN: 9E991 NLR Aerospace economics drive long development cycles and even longer product lifecycles * Development of a...

  19. CX-010461: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Scalable Light Module for Low-Cost, High-Efficiency Light Emitting Diode Luminaires CX(s) Applied: B3.6 Date: 06/11/2013 Location(s): Georgia Offices(s): National Energy Technology Laboratory

  20. CX-007462: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Light-Emitting Diode Street Light Retrofit CX(s) Applied: A1, A9, B5.1, B5.15 Date: 12/20/2011 Location(s): Ohio Offices(s): National Energy Technology Laboratory