Rear projection screen

Details Rear projection screen Rear projection screen

1986-03-07

1987-06-23

Wintercorn, Richard A.

G03B 2160

Patent

active

046748369

ABSTRACT:
Provided is a rear projection screen onto which light from a projector is introduced at an angle from about 40 to 70 deg. with respect to the rear light incidence surface of the screen. A plurality of elongated prisms are formed on the rear surface of the screen, extending along curved lines, each prism having a reflection surface extending along the associated curved line, thereby the light received by the rear surface is internally reflected by the reflection surface, and transmitted through the light transmitting medium of the screen and is then emerged from the front viewing surface thereof.

REFERENCES:
patent: 3236150 (1966-02-01), Miller
patent: 3463569 (1969-08-01), Bratkowski
patent: 4418986 (1983-12-01), Yata et al.
patent: 4439027 (1984-03-01), Shioda et al.
patent: 4469402 (1984-09-01), Yata et al.
patent: 4482206 (1984-11-01), Van Breemen

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