Rear projection screen

Details Rear projection screen Rear projection screen

1987-04-27

1988-03-08

Wintercorn, Richard A.

G03B 2160

Patent

active

047296313

ABSTRACT:
Provided is a rear projection screen apparatus having a rear projection screen, light rays from a projecter being incident upon the rear surface of the rear projection screen at steep angles, wherein a plurality of elongated prisms are formed on the rear surface of the screen, each prism having a reflection surface extending therealong, thereby the incedence light rays are internally reflected, and then transmitted through the medium of screen for emerging from the front surface of the screen on the viewing side, and the rear surface of the screen is in a curve shape which is convex toward the viewing side so that the brightness of the screen can be made to be uniform.

REFERENCES:
patent: 3236150 (1966-02-01), Miller
patent: 3463569 (1969-08-01), Bratkowski
patent: 4185901 (1980-01-01), Behr
patent: 4482206 (1984-11-01), Van Breemen
patent: 4512631 (1985-04-01), Van Breemen
patent: 4674836 (1987-06-01), Yata et al.

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