Load-bearing rear-projection screen

Details Load-bearing rear-projection screen Load-bearing rear-projection screen

1984-05-17

1985-10-22

Wintercorn, Richard A.

Optics: motion pictures

Removable film strip magazine type

352 47, 353 28, 354291, G03B 2156

Patent

active

045484686

ABSTRACT:
The invention pertains in general to the art of motion-picture photography and in particular to rear-projection "process" photography, providing a rigid rear-projection screen onto which heavy objects, such as props and actors, may be placed while imagery is projected onto it from the side opposite to the said objects. The screen consists of a rigid sheet on which a light-scattering surface has been established and which rests on pseudotransparent supports, each of which consists of an opaque structural member, a block of transparent material, and three mirrors so arranged to make light detour around the structural member.

REFERENCES:
patent: 2174931 (1939-10-01), Terry et al.
patent: 2275270 (1942-03-01), Rackett
patent: 2888857 (1959-06-01), Stevenson et al.
patent: 3517447 (1970-06-01), Fox
patent: 4067026 (1978-01-01), Pappanikolaou

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