Automatic focusing system

Details Automatic focusing system Automatic focusing system

1982-05-20

1983-11-22

Gellner, Michael L.

G03B 310

Patent

active

044165234

ABSTRACT:
A system for automatically adjusting the focus of lens is provided with an auxiliary arrangement for forcibly shifting the lens to a predetermined position when the focus detection by a focus detecting system is either difficult or impossible with the lens being at its initial position and causing the focus detecting system to effect focus detection under the new shifted condition of the lens.

REFERENCES:
patent: 3571598 (1971-03-01), Lombard, Jr.
patent: 3836919 (1974-09-01), Matsumoto et al.

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