Two panel optical engine for projection applications

Details Two panel optical engine for projection applications Two panel optical engine for projection applications

2006-03-07

2006-03-07

Perkey, W. B. (Department: 2851)

Optics: image projectors

Color filter

C353S020000, C353S031000, C359S891000

Reexamination Certificate

active

07008064

ABSTRACT:
Optical engines using a reduced number of components offer advantages over more complex optical systems. Three panel optical engines have offered the advantage of relatively high throughput but at the cost of complexity and increased components on the bill of materials. Conventional two-panel engines have required the use of complex retarder structures to achieve the dual polarizations state for the three primary colors. The present invention achieves this goal while using simpler optical retarders.

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patent: 5921650 (1999-07-01), Doany et al.
patent: 6309071 (2001-10-01), Huang et al.
patent: 6402323 (2002-06-01), Shiue et al.
patent: 6568815 (2003-05-01), Yano
patent: 6773111 (2004-08-01), Yamamoto
patent: PCT/US00/13063 (2000-08-01), None

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