Automatic focus adjusting device

Details Automatic focus adjusting device Automatic focus adjusting device

1987-01-21

1988-08-16

Perkey, W. B.

G03B 300

Patent

active

047647876

ABSTRACT:
An automatic focus adjusting device for a camera is disclosed. The automatic focus adjusting device has lens control means for driving an objective lens at a high speed while repeating focus condition detecting operation when a defocus amount detected is large and, when the defocus amount becomes small, at a low speed without executing the focus condition detecting operation in order to stop the objective lens at an in-focus position thereof.

REFERENCES:
patent: 4387975 (1983-06-01), Araki
patent: 4445761 (1984-05-01), Ishikawa et al.
patent: 4671640 (1987-06-01), Akada et al.

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