Rear projection viewer having small auxiliary screen

Details Rear projection viewer having small auxiliary screen Rear projection viewer having small auxiliary screen

1977-12-30

1980-01-15

Hayes, Monroe H.

Optics: motion pictures

Cabinet-type projector

352129, 352242, 353 74, G03B 2110

Patent

active

041836340

ABSTRACT:
A rear projection viewer apparatus of the type wherein the projected images are initially projected downward towards a mirror mounted in the base of the viewer which redirects the projected images upwardly and forwardly to a viewing screen forming the front of the viewer. Means are provided for removing the mirror element from the downward path of the projected images and an auxiliary viewing screen smaller than the primary screen is disposed in the base of the viewer to receive the projected images thereupon thereby permitting viewing of the images on the smaller screen when the viewer is positioned with its primary viewing screen facing downward.

REFERENCES:
patent: 3138057 (1964-06-01), Castedello
patent: 3387535 (1968-06-01), Bennett
patent: 3391979 (1968-07-01), Lessler
patent: 3791725 (1974-02-01), Young
patent: 3834798 (1974-09-01), Cook
patent: 3904283 (1975-09-01), Arai

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