Film projection system

Details Film projection system Film projection system

1975-12-22

1978-02-28

Haroian, Harry N.

Optics: image projectors

Selective data retrieval

Film strip

G03B 2312

Patent

active

040763978

ABSTRACT:
A film projection viewing system employs a projector to receive cartridges loaded into the projector in a manner completing a light path through the projector to a viewing screen. A film projector and cartridge having a substantially self-contained film transport therein cooperates to provide a system having a lens system with a focal length settable to a predetermined position in response to insertion of a cartridge into the projector.

REFERENCES:
patent: 3017803 (1962-01-01), Sakaki
patent: 3482840 (1969-12-01), Cytrin
patent: 3498707 (1970-03-01), Allen
patent: 3584941 (1971-06-01), Downey
patent: 3638880 (1972-02-01), Hollingworth
patent: 3700321 (1972-10-01), Peters
patent: 3824008 (1974-07-01), Smith

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