Industry Patents
Patent: 6909377
Illumination Device With Light Emitting Diodes (LEDs), Method of Illumination and Method For Image Recording With Such An LED Illumination Device
(Click image for PDF of full patent)
| Patent Number: |
6909377 |
| Title: |
Illumination Device With Light Emitting Diodes (LEDs), Method of Illumination and Method For Image Recording With Such An LED Illumination Device |
| Abstract: |
Illumination device with light emitting diodes (LED) and an LED support
element on which a number of light pixels are arranged which emit light
are disclosed. The light pixels each comprise a number of LEDs with
emission wavelengths suitable for additive color mixing of the light from
the light pixels. A controller is provided on the LED support element, for
setting a color temperature and intensity parameter of the additively
color mixed light of each individual light pixel. The controller assigns
electrical LED currents to the color temperature and intensity parameters
and controls the LEDs in the light pixels using the assigned LED currents.
Control devices measure the color temperature and intensity of the emitted
light of at least one light pixel, compare the measured and the pre-set
color temperature and intensity parameters of the light pixel and in the
case of a difference in the measured and pre-set color temperature and
intensity parameters regulates the controller such that the emitted light
from the light pixel has the pre-set color temperature and intensity
parameters.
|
| Country of Issue: |
US |
| First Named Inventor: |
Eberl |
| Assignee: |
Arnold & Richter Cine Technik |
| Continuation or Divisional of: |
|
| International Classification: |
B60Q 1/00 |
| US Classification: |
340/815.4 |
| Issue Date: |
06-21-2005 |
| Filing Date: |
06-22-2001 |
| Application : |
10/312785 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6909377 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6909377 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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