Rotary screen for receiving optical images particularly advertis

Details Rotary screen for receiving optical images particularly advertis Rotary screen for receiving optical images particularly advertis

1980-02-04

1982-03-16

Wintercorn, Richard A.

Optics: image projectors

Plural projection paths with single light source

40436, 353 79, G03B 2156, G09F 1300, G03B 2124

Patent

active

043198058

ABSTRACT:
A rotary screen mounted in the median area of a preferably spherical enclosure, the rear face of which being made opaque except in its central portion, while its front face is perfectly transparent, a projector being placed rearwardly of the enclosure in central axis of the portion which is not opaque in order to enable light rays from the prospector to pass through the enclosure to reach the rotary screen.

REFERENCES:
patent: 3134299 (1964-05-01), Allen
patent: 3480346 (1969-11-01), Reitz et al.

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