Light collection optics for measuring flux and spectrum from light-emitting devices

Title: Light collection optics for measuring flux and spectrum from light-emitting devices

Full Record
Other Related Research

Abstract

Systems and methods for accurately measuring the luminous flux and color (spectra) from light-emitting devices are disclosed. An integrating sphere may be utilized to directly receive a first portion of light emitted by a light-emitting device through an opening defined on the integrating sphere. A light collector may be utilized to collect a second portion of light emitted by the light-emitting device and direct the second portion of light into the integrating sphere through the opening defined on the integrating sphere. A spectrometer may be utilized to measure at least one property of the first portion and the second portion of light received by the integrating sphere.

Inventors:: McCord, Mark A.; DiRegolo, Joseph A.; Gluszczak, Michael R.

Issue Date:: 2016-05-24

Research Org.:: KLA-Tencor Corporation, Milpitas, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1254166

Patent Number(s):: 9,347,824

Application Number:: 14/527,034

Assignee:: KLA-Tencor Corporation (Milpitas, CA)

DOE Contract Number:: EE0005877

Resource Type:: Patent

Resource Relation:: Patent File Date: 2014 Oct 29

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    McCord, Mark A., DiRegolo, Joseph A., and Gluszczak, Michael R. Light collection optics for measuring flux and spectrum from light-emitting devices.  United States: N. p., 2016. 
        Web.

Copy to clipboard


                    McCord, Mark A., DiRegolo, Joseph A., & Gluszczak, Michael R. Light collection optics for measuring flux and spectrum from light-emitting devices.  United States.

Copy to clipboard


                    McCord, Mark A., DiRegolo, Joseph A., and Gluszczak, Michael R. Tue .  
        "Light collection optics for measuring flux and spectrum from light-emitting devices".  United States.  https://www.osti.gov/servlets/purl/1254166.

Copy to clipboard


                    
@article{osti_1254166,

  title        = {Light collection optics for measuring flux and spectrum from light-emitting devices},

  author       = {McCord, Mark A. and DiRegolo, Joseph A. and Gluszczak, Michael R.},

  abstractNote = {Systems and methods for accurately measuring the luminous flux and color (spectra) from light-emitting devices are disclosed. An integrating sphere may be utilized to directly receive a first portion of light emitted by a light-emitting device through an opening defined on the integrating sphere. A light collector may be utilized to collect a second portion of light emitted by the light-emitting device and direct the second portion of light into the integrating sphere through the opening defined on the integrating sphere. A spectrometer may be utilized to measure at least one property of the first portion and the second portion of light received by the integrating sphere.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2016},

  month        = {5}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Recipient luminophoric mediums having narrow spectrum luminescent materials and related semiconductor light emitting devices and methods

Patent LeToquin, Ronan P; Tong, Tao; Glass, Robert C

Light emitting devices include a light emitting diode ("LED") and a recipient luminophoric medium that is configured to down-convert at least some of the light emitted by the LED. In some embodiments, the recipient luminophoric medium includes a first broad-spectrum luminescent material and a narrow-spectrum luminescent material. The broad-spectrum luminescent material may down-convert radiation emitted by the LED to radiation having a peak wavelength in the red color range. The narrow-spectrum luminescent material may also down-convert radiation emitted by the LED into the cyan, green or red color range.
Full Text Available
System for outputting a spectrum of light of a scene having optical detectors to receive light of different spectral transmittance from respective filters

Patent Shields, Eric A.

Technologies pertaining to a compressive sensing snapshot spectrometer are described herein. Light is focused through an array of filters onto an array of optical detectors by way of an optical objective. Each detector in the array receives light from a single respective filter in the filters. Each filter in the filters has a spectral transmittance function that overlaps a spectral transmittance function of at least one other filter. A compressive sensing algorithm is executed over outputs of the detectors based upon the known spectral transmittance functions of the filters. Based upon the execution of the compressive sensing algorithm, intensity valuesmore »« less
Full Text Available
Photon extraction from nitride ultraviolet light-emitting devices

Patent Schowalter, Leo J; Chen, Jianfeng; Grandusky, James R

In various embodiments, a rigid lens is attached to a light-emitting semiconductor die via a layer of encapsulant having a thickness insufficient to prevent propagation of thermal expansion mismatch-induced strain between the rigid lens and the semiconductor die.
Full Text Available
Quantitative method for measuring heat flux emitted from a cryogenic object

Patent Duncan, Robert V [Tijeras, NM]

The present invention is a quantitative method for measuring the total heat flux, and of deriving the total power dissipation, of a heat-fluxing object which includes the steps of placing an electrical noise-emitting heat-fluxing object in a liquid helium bath and measuring the superfluid transition temperature of the bath. The temperature of the liquid helium bath is thereafter reduced until some measurable parameter, such as the electrical noise, exhibited by the heat-fluxing object or a temperature-dependent resistive thin film in intimate contact with the heat-fluxing object, becomes greatly reduced. The temperature of the liquid helum bath is measured at thismore »« less
Full Text Available
Semiconductor light-emitting devices having concave microstructures providing improved light extraction efficiency and method for producing same

Patent Tansu, Nelson; Gilchrist, James F; Ee, Yik-Khoon; ...

A conventional semiconductor LED is modified to include a microlens layer over its light-emitting surface. The LED may have an active layer including at least one quantum well layer of InGaN and GaN. The microlens layer includes a plurality of concave microstructures that cause light rays emanating from the LED to diffuse outwardly, leading to an increase in the light extraction efficiency of the LED. The concave microstructures may be arranged in a substantially uniform array, such as a close-packed hexagonal array. The microlens layer is preferably constructed of curable material, such as polydimethylsiloxane (PDMS), and is formed by soft-lithographymore »« less
Full Text Available

Similar Records