Control device for driving zoom lens of a camera

Details Control device for driving zoom lens of a camera Control device for driving zoom lens of a camera

1988-09-09

1989-09-12

Gellner, Michael L.

G03B 310

Patent

active

048664685

ABSTRACT:
A control device for driving a zoom lens of a camera, comprising; a moving mirror cylinder movable on an optical axis of the camera between a first position corresponding to the shortest focal length of the zoom lens and a second position corresponding to the longest focal length of the zoom lens, a motor for moving the moving mirror cylinder in a predetermined direction, a detector for detecting a position of the moving mirror cylinder on the optical axis, a presetter for presetting a predetermined position between the first position and the second position, the predetermined position at which the moving mirror cylinder to stop, a controller for controlling the motor such that the moving mirror cylinder at a high speed, a starter for starting an actuation of the controller, a stopper for stopping an actuation of the controller in a case where the moving mirror cylinder arrives at the first position, the second position or the predetermined position.

REFERENCES:
patent: 4777508 (1988-10-01), Aoshima

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