Two-panel color management system

Details Two-panel color management system Two-panel color management system

2008-09-30

2008-09-30

Lee, Diane I. (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S033000, C353S084000, C353S081000, C353S082000, C359S583000, C359S490020, C359S831000, C359S634000, C359S349000, C345S003100, C345S087000, C362S561000, C349S005000, C349S182000, C349S193000, C349S194000, C348S751000, C348S761000, C348S766000, C348S790000

Reexamination Certificate

active

11288568

ABSTRACT:
The invention provides a two-panel color management system for projection display applications, wherein color sequencing is accomplished using achromatic beam switching and static color separation. In a preferred embodiment, a liquid-crystal polarization switch alternates a polarization of an input light beam between two orthogonal states. A polarization beam splitter directs the beam comprising three primary color components alternately along a first and second paths, wherein first and second different secondary color filters are disposed for forming first and second secondary colored beams, each having two different primary color components. A dichroic color separator alternately receives the first and second secondary colored beams, separates their primary color components and directs them to first and second imager panels. A beam combiner combines the first polarized primary color beam from the first imager and the second polarized primary color beam from the second imager to form a projection beam.

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patent: 6280034 (2001-08-01), Brennesholtz
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patent: 6650377 (2003-11-01), Robinson et al.
patent: 6702446 (2004-03-01), De Vaan et al.
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