Film reader

Details Film reader Film reader

1975-02-13

1976-12-14

Aegerter, Richard E.

Optics: image projectors

Structurally related projector and screen

353 77, 353 27R, G03B 2124, G03B 2308

Patent

active

039972585

ABSTRACT:
A film reader include a lower casing accommodating a light source and an optical illuminator, and an upper casing enclosing a reflection type screen, the upper casing being collapsible and having an opening for observing the reflection type screen. A filter is disposed in the opening. One end of the filter is pivotably mounted to the upper casing and the other end of the filter is detachably mounted.

REFERENCES:
patent: 2170967 (1939-08-01), Eppenstein et al.
patent: 2734435 (1956-02-01), Leonardi
patent: 3479116 (1969-11-01), Anderson
patent: 3744893 (1973-07-01), Chandler
patent: 3809460 (1974-05-01), Letten et al.

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