Overhead projector

Details Overhead projector Overhead projector

1990-12-18

1992-02-04

Cuchlinski, Jr., William A.

Optics: image projectors

Reflector

353 94, 353 63, G03B 2128

Patent

active

050855050

ABSTRACT:
An overhead projector comprises two light sources, a first reflection mirror that reflects a light from an illuminating light source of said light sources toward a reflection type light collection lens and a projection lens that projects a light reflected from said light collection lens onto a screen via a second reflection mirror, while said two light sources, said first reflection mirror and said projection lens being arranged parallel and housed together in a longitudinal direction of an overhead cabinet, wherein the light axes of said two light sources are directed toward a center portion of a mirror surface of the first reflection mirror, said two light sources are mounted parallel laterally in said overhead cabinet, and said first reflection mirror is mounted in a manner that said first reflection mirror is rotatable around said center portion of the mirror surface.

REFERENCES:
patent: 3900253 (1975-08-01), Astero
patent: 4565430 (1986-01-01), Grunwald
patent: 4922079 (1975-11-01), Astero

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