Industry Patents
Patent: 6902310
Illumination System and Projection Display Device Employing The Same
(Click image for PDF of full patent)
| Patent Number: |
6902310 |
| Title: |
Illumination System and Projection Display Device Employing The Same |
| Abstract: |
A compact illumination system using a light source such as an array of
light emitting diodes (LEDs) or laser diodes (LDs) having a long life
span, and a projection display device employing the illumination system
are provided. The illumination system includes a light source; a
collimating lens array for making light emitted form the light source be
parallel; an optical path conversion unit for reflecting the light
incident in parallel from the collimating lens array back toward the light
source to initially converge the light; and a secondary focusing lens
disposed at a side where the light source is positioned, for converging
the light, that has been reflected and converged through the optical path
conversion unit, on a predetermined position. The illumination system
reflected the light emitted from the light source back toward the light
source through the optical path conversion unit so that the volumes of the
illumination system can be greatly reduced to be compact.
|
| Country of Issue: |
US |
| First Named Inventor: |
Yong-seok |
| Assignee: |
Samsung |
| Continuation or Divisional of: |
|
| International Classification: |
G03B 21/20 |
| US Classification: |
362/558 |
| Issue Date: |
06-07-2005 |
| Filing Date: |
01-30-2003 |
| Application : |
10/353948 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6902310 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6902310 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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