Industry Patents
Patent: 7132805
Intelligent Drive Circuit for a Light Emitting Diode (LED) Light Engine
(Click image for PDF of full patent)
| Patent Number: |
7132805 |
| Title: |
Intelligent Drive Circuit for a Light Emitting Diode (LED) Light Engine |
| Abstract: |
A controller for controlling a light emitting diode (LED) light engine.
The controller includes a temperature sensor configured to sensor
temperature at the LED light engine. A current sensor senses a drive
current of the LED light engine. A voltage differential sensor senses a
voltage differential across LEDs of the LED light engine. A timer
monitors a time of operation of the LED light engine. Further, a control
device controls the drive current to the LED light engine based on the
sensed temperature, the sensed drive current, the sensed voltage
differential, and the monitored time of operation. Further, the control
device outputs an indication of intensity degradation of an LED, and if
the intensity degradation exceeds a predetermined threshold the control
can output an indication of such to a user, so that the user can be
apprised that the LED needs to be changed.
|
| Country of Issue: |
US |
| First Named Inventor: |
Young |
| Assignee: |
Dialight |
| Continuation or Divisional of: |
|
| International Classification: |
H05B 37/02 |
| US Classification: |
315/308 |
| Issue Date: |
11-07-2006 |
| Filing Date: |
08-09-2004 |
| Application : |
10/913451 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7132805 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7132805 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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