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Title: Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade

Abstract

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.

Inventors:
 [1];  [2]
  1. Pinole, CA
  2. Berkeley, CA
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
OSTI Identifier:
874476
Patent Number(s):
US 6398384
Assignee:
The Regents of the University of California (Oakland, CA)
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
lamp; dynamically; controlled; lighting; distribution; uniformly; illuminated; luminous; shade; double; floor; pair; compact; fluorescent; lamps; cfls; arranged; vertically; reflective; septum; selectively; produced; control; light; intensity; cfl; ensures; directed; pattern; selected; easily; changed; user; configuration; bowl; shaped; upper; sitting; hanging; provides; task; uniform; luminance; planar; circular; oriented; horizontally; preferable; provide; energy; efficiency; types; including; incandescent; halogen; leds; fixture; designed; home; hospitality; office; environments; fluorescent lamp; compact fluorescent; /362/D26/

Citation Formats

Siminovitch, Michael J, and Page, Erik R. Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade. United States: N. p., 2002. Web.
Siminovitch, Michael J, & Page, Erik R. Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade. United States.
Siminovitch, Michael J, and Page, Erik R. 2002. "Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade". United States. https://www.osti.gov/servlets/purl/874476.
@article{osti_874476,
title = {Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade},
author = {Siminovitch, Michael J and Page, Erik R},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/874476}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}