Optics: motion pictures – Methods – Recording
Reexamination Certificate
2005-02-15
2005-02-15
Niebling, John F. (Department: 2812)
Optics: motion pictures
Methods
Recording
C352S020000
Reexamination Certificate
active
06856375
ABSTRACT:
The invention provides a liquid crystal light valve that makes it possible to increase the life of a polarizer at a light-exiting-surface side of the liquid crystal light valve by reducing the burden thereon, and a projection display device that incorporates the liquid crystal light valve. In liquid crystal light valves that modulate incident light in accordance with image information, at least two corresponding polarizers are provided respectively at the light-exiting-surface sides of liquid crystal panels.
REFERENCES:
patent: 6481854 (2002-11-01), Sugawara et al.
patent: 6592224 (2003-07-01), Ito et al.
Furuhata Mutsuya
Iechika Hisashi
Matsumiya Toshio
Yajima Akitaka
Oliff & Berridg,e PLC
Seiko Epson Corporation
Stevenson Andre′ C.
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