Focusing device for a camera

Details Focusing device for a camera Focusing device for a camera

1983-09-06

1985-02-19

Perkey, William B.

G03B 708

Patent

active

045001880

ABSTRACT:
A focusing device in which, in a condition in which the focus detecting operation is impossible, when the set focus position of the picture-taking lens is on the short distance focus side, the lens is forcibly shifted to the long distance focus side and when the set focus position is on the long distance focus side, the lens is shifted to the short distance focus side, whereby the device can quickly get away from the condition in which the focus detecting operation is impossible.

REFERENCES:
patent: 4220850 (1980-09-01), McEachern
patent: 4303321 (1981-12-01), Enomoto et al.
patent: 4314748 (1982-02-01), Kawabata et al.

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