Microfilm reader

Details Microfilm reader Microfilm reader

1980-04-25

1982-01-26

Shepperd, John W.

Optics: image projectors

Structurally related projector and screen

353 44, 353119, 353 26R, 353 27R, G03B 2124

Patent

active

043125786

ABSTRACT:
A desk top microfilm reader and work station having a rectangular base enclosing a film housing and projection system. The base has a flat top surface which functions as an operator work surface and an image projection surface. A support arm rises vertically from the base and a hood is attached near the top of the support arm. There are illumination lamps and a mirror in the hood. The lamps illuminate the work surface and are turned off when a micro image is to be projected onto the image projection surface. The optical projection path from the projection system to the mirror in the hood and back to the projection surface is unenclosed.

REFERENCES:
patent: 2258382 (1941-10-01), Goebel
patent: 3377915 (1968-04-01), Buckett
patent: 3535031 (1970-10-01), Spreitzer
patent: 3535032 (1970-10-01), Hopper
patent: 3632197 (1972-01-01), Shelton
patent: 3720463 (1973-03-01), Taylor

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