Microfilm camera having a moving lens

Details Microfilm camera having a moving lens Microfilm camera having a moving lens

1981-03-16

1983-02-22

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Original moves continuously

355 23, 355 65, 355 66, 355 51, G03B 2748, G03B 2750

Patent

active

043746187

ABSTRACT:
A microfilm camera employs a reciprocating lens to optically arrest motion of documents traveling in a high-speed stream for photographic exposure onto stationary, incrementally advanced photographic film. The reciprocation of the lens is controlled by a closed loop servo system. To enhance performance of the servo system, the lens is supported by a four-bar linkage comprising relatively stiff light-weight arms interconnected by crossed leaf spring hinges.

REFERENCES:
patent: 2756015 (1956-07-01), Larisch
patent: 3023993 (1962-03-01), Kerley, Jr.
patent: 3057592 (1962-10-01), Thrasher
patent: 3073584 (1963-01-01), Troeger
patent: 3181918 (1965-05-01), Troeger
patent: 3549244 (1970-12-01), Shaffer
patent: 3635466 (1972-01-01), Townsend
patent: 3811665 (1974-05-01), Seelig
patent: 4087173 (1978-05-01), Beery
patent: 4091428 (1978-05-01), Saito et al.
patent: 4123147 (1978-10-01), Hill et al.

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