Rear projection viewer having auxiliary viewing screen

Details Rear projection viewer having auxiliary viewing screen Rear projection viewer having auxiliary viewing screen

1977-12-30

1979-01-30

Hayes, Monroe H.

Optics: motion pictures

Cabinet-type projector

352133, 350123, 353 72, 353 76, G03B 2110

Patent

active

041369351

ABSTRACT:
A rear projection viewer apparatus of the type wherein a projected image is projected towards a primary viewing screen forming the front of the viewer, the front viewing screen being removably located with respect to other portions of the viewer housing so that it may be removed from the path of the projected images. A second rear projection screen substantially smaller than the first screen is provided. The small screen and selected portions of the viewer housing are provided with complementary structure for selectively locating the second screen at an operative position substantially normal to the projection axis and at a location therealong substantially closer to the image projecting means than the first rear projection screen when it is in its operative position.

REFERENCES:
patent: 3791725 (1974-02-01), Young
patent: 3834798 (1974-09-01), Bundschuh
patent: 3865475 (1975-02-01), Hardy et al.

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