Industry Patents
Patent: 7656100
System For Temperature Prioritised Colour Controlling of a Solid-State Lighting Unit
(Click image for PDF of full patent)
| Patent Number: |
7656100 |
| Title: |
System For Temperature Prioritised Colour Controlling of a Solid-State Lighting Unit |
| Abstract: |
The present invention relates to a system (100) for controlling light
output of a lighting system. The system (100) comprises a light mixing
circuit (116) comprising a plurality of light sources configured to
provide a mixed light output (102) and mounted on a heat-sink (202)
together with a temperature sensing means and a controller (108)
receiving a set-point (110) from a calibration matrix (104) and
generating a driving signal (120, 122) for the light mixing circuit
(116). The controller (108) comprises a rescale unit (118) configured to
measure power of the driving signal (120, 122) and to rescale the driving
signal (120, 122) when the power exceeds a predetermined power threshold,
and the controller is configured to receive the heat-sink temperature
signal (206) and to calculate a junction temperature from the heat-sink
temperature signal, and the controller (108) generates the driving signal
(120, 122) as a function of the junction temperature.
|
| Country of Issue: |
US |
| First Named Inventor: |
Deurenberg, Hoelen, Meurs |
| Assignee: |
Philips |
| Continuation or Divisional of: |
|
| International Classification: |
H05B 37/02 |
| US Classification: |
315/307 |
| Issue Date: |
02-02-2010 |
| Filing Date: |
07-18-2005 |
| Application : |
11/572279 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7656100 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7656100 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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