Automatic focusing device

Details Automatic focusing device Automatic focusing device

1985-05-15

1986-09-23

Perkey, William B.

G03B 310

Patent

active

046132252

ABSTRACT:
The disclosed automatic focusing device operates with cameras, or the like, in either a first mode in which a range finding operation and a lens drive operation occur alternately or in a second mode in which the lens is driven during the range finding operation. The mode is automatically selected depending on the conditions of an object to be photographed so as to optimize the focus adjustment for a given photographic situation.

REFERENCES:
patent: Re31362 (1983-08-01), Shenk

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