Industry Patents
Patent: 7329998
Lighting System Including Photonic Emission and Detection Using Light-Emitting Elements
(Click image for PDF of full patent)
| Patent Number: |
7329998 |
| Title: |
Lighting System Including Photonic Emission and Detection Using Light-Emitting Elements |
| Abstract: |
The present invention provides a system and method for generating light
using light-emitting elements and detecting the intensity and spectral
power distribution of light using the same light-emitting elements as
spectrally sensitive photodetectors. The light-emitting elements function
in two modes, an ON mode and an OFF mode, wherein in the ON mode the
light-emitting elements are activated and emit light of a particular
frequency or range of frequencies. When in the OFF mode, the
light-emitting elements are deactivated, wherein they do not emit light
but serve to detect photons incident upon them thus generating an
electrical signal representative of the intensity and spectral power
distribution of the incident photons. The detected signal from the
deactivated light-emitting elements can be used to provide photonic
feedback to a lighting system, and thereby may be used to control the
brightness and color balance of the lighting system. In addition, the
light-emitting elements may be arranged such that no spectrally selective
filters or optics are necessary to block or focus light onto the
light-emitting elements when in the detection or OFF mode.
|
| Country of Issue: |
US |
| First Named Inventor: |
Jungwirth |
| Assignee: |
TIR Systems |
| Continuation or Divisional of: |
|
| International Classification: |
G05F 1/00 |
| US Classification: |
315/291 |
| Issue Date: |
02-12-2008 |
| Filing Date: |
08-04-2005 |
| Application : |
11/197283 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7329998 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7329998 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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