Variable focal length, automatic focusing camera with a single m

Details Variable focal length, automatic focusing camera with a single m Variable focal length, automatic focusing camera with a single m

1985-11-21

1987-09-29

Perkey, W. B.

3541951, 35419512, 3542341, G03B 308, G03B 908

Patent

active

046965599

ABSTRACT:
A lens barrel unit for attachment to a camera body and providing automatic focusing variable focal length and shutters. A single motor provide motive power for the shutter, for the movement of part of the lens system for focusing and for mechanical scanning of a light emitting diode associated with the focusing. The drive train is accomplished by a cylindrical gear driven by the motor controlling the shutter through a cam face and controlling the focusing by the engagement of a pin with an end of its circumferential slot. The pin drives the lens along the axis simultaneously with the diode scanning until an electromagnetic prevents further movement upon detection of forms.

REFERENCES:
patent: 4294527 (1981-10-01), Hashimoto et al.
patent: 4505567 (1985-03-01), Hirohata et al.
patent: 4519691 (1985-05-01), Yamada et al.
patent: 4525050 (1985-06-01), Ohashi
patent: 4566773 (1986-01-01), Kaneda

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