Portable opaque projector

Details Portable opaque projector Portable opaque projector

1987-04-23

1988-01-26

Haroian, Harry N.

Optics: image projectors

Episcope

Reflector between lamp and screen

353119, 353 72, 353 79, G03B 2106

Patent

active

047213809

ABSTRACT:
An improved portable opaque projector with superior performance and portability is characterized by a transportable mode and an operable mode. When in its operable mode the top is removed and a removable mirror is mounted to the projection lens, and the projector sides are extended. Improved means for mounting a mirror proximate the extendable projection lens and in fixed vertical relationship thereto as the lens is rotatably extended for focusing, is provided. An improved mirror structure for preventing non-planar distortion of the mirror surface is also provided.

REFERENCES:
patent: 1202754 (1916-10-01), Patterson
patent: 1485147 (1924-02-01), Patterson
patent: 1787279 (1930-12-01), Mageoch
patent: 2847901 (1958-08-01), Sassaman et al.
patent: 3361131 (1968-11-01), Barger

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