Automatic focusing system with interchangeable lens

Details Automatic focusing system with interchangeable lens Automatic focusing system with interchangeable lens

1982-03-26

1983-12-20

Perkey, William B.

3541731, G03B 300, G03B 118

Patent

active

044213972

ABSTRACT:
In the disclosed system, an accessory unit arranged to hold a power source operates with a camera and a current supply circuit supplies current to electrical parts in a controllable interchangeable lens through electrical connection means in the lens in response to closure of the camera's release switch when the accessory unit and the lens are attached to the camera.

REFERENCES:
patent: 3539253 (1970-11-01), Roppel
patent: 3762295 (1973-10-01), Kitai
patent: 3836919 (1974-09-01), Matsumoto et al.
patent: 3940777 (1976-02-01), Komine
patent: 4323303 (1982-04-01), Enomoto

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