Efficient illumination for display systems and in methods...

Details Efficient illumination for display systems and in methods... Efficient illumination for display systems and in methods...

2005-11-30

2009-11-17

Lee, Diane I (Department: 2851)

Optics: image projectors

Particular condenser

C353S098000, C353S094000, C353S121000, C385S129000, C385S034000, C362S610000, C362S612000, C362S555000, C359S034000

Reexamination Certificate

active

07618147

ABSTRACT:
A display system (100, 200, 300, 350, 400, 450) for displaying an image is described. The display system (100, 200, 300, 350, 400, 450) typically comprises one or a plurality of individual light sources (102) and a light collecting stage (110, 210, 310, 410) which comprises a separate light collecting sub-system associated with each light source (102), or group of light sources (102). The display system (100, 200, 300, 350, 400, 450) typically comprises at least one light modulator (120) which is operable to modulate light received from the light collecting stage (110, 210, 310, 410) according to an image which is to be displayed. Finally a projection stage (130) is provided for projecting the image, typically on a projection screen. The present invention also relates to a corresponding method. The present invention is especially useful with light sources having a packaging around the light emitting surface such that the light sources cannot be physically placed adjacent to each other.

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patent: WO 2004/043076 (2004-05-01), None

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