Projection apparatus

Details Projection apparatus Projection apparatus

1989-10-02

1991-10-08

Cuchlinski, Jr., William A.

Optics: image projectors

Composite projected image

Multicolor picture

353 34, 359 41, 359 53, 359 54, G03B 2100, G02F 113

Patent

active

050549103

ABSTRACT:
A projection apparatus includes three liquid crystal panels for independently controlling respective color light components of red, green and blue for a color image to be reproduced. The apparatus further includes devices for subjecting the respective color light components to additive mixture so as to reproduce the color image. Each of the liquid crystal panels is constituted by a nematic type simple matrix liquid crystal panel having twist angle .phi. of its liquid crystal molecule represented by

REFERENCES:
patent: 4171874 (1979-10-01), Bigelow et al.
patent: 4378955 (1983-04-01), Bleha, Jr. et al.
patent: 4601543 (1986-07-01), Boyd et al.
patent: 4697884 (1987-10-01), Amstutz et al.
patent: 4850685 (1989-07-01), Kamakura et al.
patent: 4856875 (1989-08-01), Kozaki et al.
patent: 4915479 (1990-04-01), Clarke

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