Motor driven lens and camera system

Details Motor driven lens and camera system Motor driven lens and camera system

1992-05-21

1994-11-22

Gray, David M.

35419512, G03B 1300

Patent

active

053673549

ABSTRACT:
A motor driven lens includes a movable lens group and a lens moving mechanism which hold and move the movable lens group in an optical axis direction within a predetermined movable range. The motor driven lens further includes a motor for driving the lens moving mechanism to move the movable lens group. A counter counts the time in which a movement of the movable lens group is impeded during the operation of the motor, and a control device controls an operational speed of the motor and stops the operation of the motor for a predetermined period of time in which the movement of the movable lens group is impeded, depending on the operational speed of the motor.

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Minolta Techno Report, "Lens Drive Control With A Soft Governor", 1986, with English Translation.

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