Compact rear-projection system with obliquely incident light bea

Details Compact rear-projection system with obliquely incident light bea Compact rear-projection system with obliquely incident light bea

1986-08-18

1990-10-16

Cuchlinski, Jr., William A.

Optics: image projectors

Cabinet encloses projector and one side of screen

353 78, 350128, G03B 2110, G03B 2160

Patent

active

049630164

ABSTRACT:
The volume of the housing of a rear-projection system can be reduced by 20 to 25% when the light beam is obliquely incident on the projection screen. The obliquely incident light beam is deflected towards the viewing space by means of a prism plate (731). By dividing the light-refracting action of the prism plate between the front and rear of the plate only minor light loss occurs.

REFERENCES:
patent: 3580661 (1971-05-01), Cooper, Jr.
patent: 3848980 (1974-11-01), Plummer
patent: 4173399 (1979-11-01), Yevick
patent: 4257694 (1981-03-01), Reinhard
patent: 4482206 (1984-11-01), Van Breemen
patent: 4512631 (1985-04-01), VanBreemen
patent: 4531812 (1985-07-01), Oguino
patent: 4578710 (1986-03-01), Hasegawa
patent: 4674836 (1987-06-01), Yata et al.

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