Industry Patents
Patent: 6827451
Multiple Light Valve Lighting Device or Apparatus with Wide Color Palette and Improved Contrast Ratio
(Click image for PDF of full patent)
| Patent Number: |
6827451 |
| Title: |
Multiple Light Valve Lighting Device or Apparatus with Wide Color Palette and Improved Contrast Ratio |
| Abstract: |
An apparatus is disclosed comprising a lamp which produces a first light
which may be a white light; a first light valve, a second light valve, a
first color separator, and a first aperture device. The first color
separator receives the white light from the lamp, and separates the white
light into a first color light and a first residual light. The first
aperture device receives the first color light and the first aperture
device can be controlled to modify a frequency of the first color light to
the first light valve. The second light valve receives at least a portion
of the first residual light. The first aperture device could also be
controlled to substantially block at least a portion of the first color
light.
|
| Country of Issue: |
US |
| First Named Inventor: |
Belliveau |
| Assignee: |
|
| Continuation or Divisional of: |
6575577 |
| International Classification: |
G03B 21/20 |
| US Classification: |
353/31 |
| Issue Date: |
12-07-2004 |
| Filing Date: |
05-14-2003 |
| Application : |
10/438094 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6827451 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6827451 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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