Industry Patents
Patent: 7573209
Method and System for Feedback and Control of a Luminaire
(Click image for PDF of full patent)
| Patent Number: |
7573209 |
| Title: |
Method and System for Feedback and Control of a Luminaire |
| Abstract: |
A method and system for controlling the chromaticity and luminous flux
output of a digitally controlled luminaire. The luminaire comprises one
or more light-emitting elements and one or more light sensors which can
provide optical feedback, wherein this optical feedback is filtered to
remove undesired frequencies. The method and system comprises a control
system which can sample the filtered signals from the light sensors
according to a predetermined feedback sampling frequency scheme, wherein
this scheme is specifically configured to provide sufficient iterations
of the feedback loop to be performed for adjustment of the chromaticity
and luminous flux output of the light-emitting elements, without
perceptible visual flicker or momentary chromaticity shifts.
|
| Country of Issue: |
US |
| First Named Inventor: |
Ashdown, Robinson |
| Assignee: |
Philips Electronics |
| Continuation or Divisional of: |
|
| International Classification: |
G05F 1/00 |
| US Classification: |
315/307 |
| Issue Date: |
08-11-2009 |
| Filing Date: |
10-12-2005 |
| Application : |
10/558124 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7573209 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7573209 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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