Portable microfilm reader

Details Portable microfilm reader Portable microfilm reader

1977-04-27

1978-10-17

Stephan, Steven L.

Optics: image projectors

Selective data retrieval

Plural picture rows on single microcard

353 79, 353 98, 353119, G03B 2308, G03B 2128

Patent

active

041205740

ABSTRACT:
Portable microfilm reader having a body with a microfilm holder, a projection lamp, a foldable reflecting mirror, a hinged cover, and a projection surface or screen on the inside of the cover. The invention provides means for automatically erecting the mirror when the cover is opened, and automatically folding the mirror when the cover is closed. Means is also provided for automatically turning the projection lamp off when the cover is closed.

REFERENCES:
patent: 3667839 (1972-06-01), Artand
patent: 3870411 (1975-03-01), Schwartz
patent: 3899246 (1975-08-01), Edelstein

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