Film reader

Details Film reader Film reader

1974-12-31

1977-07-05

Haroian, Harry N.

Optics: image projectors

Plural projection paths with single light source

353 26R, 353 78, G03B 2308

Patent

active

040336859

ABSTRACT:
A film reader, including an irradiator for the film on which information is recorded, an optical system for projecting the information recorded on the film, an information storage body having an electrocromic substance, which changes color when a voltage is applied thereto, mounted between a pair of electrodes for recording and erasing information projected by the optical system, the whole area of the information storage body being irradiated with light.

REFERENCES:
patent: 3475091 (1969-10-01), Smitzer
patent: 3692409 (1972-09-01), Weber
patent: 3708220 (1973-01-01), Meyers et al.
patent: 3732007 (1973-05-01), Kushima et al.
patent: 3824008 (1974-07-01), Smith
patent: 3833294 (1974-09-01), Kessler
patent: 3844650 (1974-10-01), Nicholson
patent: 3895866 (1975-07-01), DE Quervine

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