Industry Patents
Patent: 7284868
Compact Projection System Using Multiple Light Sources
(Click image for PDF of full patent)
| Patent Number: |
7284868 |
| Title: |
Compact Projection System Using Multiple Light Sources |
| Abstract: |
The invention relates to a projection system using multiple light sources
(1) at the same time. The projection system (100) comprises multiple
light sources (1), a lens array system for each of the light sources (1),
a condenser lens (2), an aperture means (3), a light valve assembly and a
projection lens (5) to project an image. The light sources are adapted to
each simultaneously illuminate the whole light valve assembly. In one
aspect, the invention relates to a system and methods for allowing
separately control of brightness, contrast, dichroic color shift or beam
uniformity. This controlling or adjustment is performed by controlling
and/or adjusting the cross-section of the illumination beam of each of
the multiple light sources near the aperture of the aperture means.
|
| Country of Issue: |
US |
| First Named Inventor: |
Colpaert, Vandorpe, Galle, Leeschaeve |
| Assignee: |
Barco |
| Continuation or Divisional of: |
|
| International Classification: |
G03B 1/00 |
| US Classification: |
353/97 |
| Issue Date: |
10-23-2007 |
| Filing Date: |
01-19-2005 |
| Application : |
11/037008 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7284868 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7284868 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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