Illuminating apparatus

Details Illuminating apparatus Illuminating apparatus

1994-10-31

1996-04-02

Dowling, William C.

Optics: image projectors

Cabinet encloses projector and one side of screen

353119, 362 97, G03B 2110

Patent

active

055045456

ABSTRACT:
A compact illuminating apparatus for viewing films by transmitted light and having uniform light distribution across a diffusing plate, comprising a shallow elongated box-like main body having a base with a bottom having alternately arranged mountains and valleys walls or side parts of the box adapted to hold said diffusing plate; a frame arranged to close the box like base; a reflecting member having reflectance higher than that of said base and arranged on said bottom of said base; and an illuminating member comprising (1) light sources disposed below said diffusing plate, and (2) light-source-control member connected electrically with said light sources for controlling the operation thereof.

REFERENCES:
patent: 4952053 (1990-08-01), Behr
patent: 5152600 (1992-10-01), Boring
patent: 5207495 (1993-05-01), Ahlstone
patent: 5384658 (1995-01-01), Ohtake et al.

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