Lens driving apparatus

Details Lens driving apparatus Lens driving apparatus

1988-01-13

1989-07-25

Perkey, W. B.

G03B 310

Patent

active

048518697

ABSTRACT:
A power focusing apparatus, while a rotary operating member is rotated calculates a motor driving speed in accordance with a rotating speed of the operating member or calculates an amount of driving the motor in accordance with a speed and an amount of rotating the operating member and drives a lens with the calculated speed or amount of driving the motor.

REFERENCES:
patent: 3798517 (1974-03-01), Whitehouse
patent: 4002405 (1977-01-01), Stahl
patent: 4161756 (1979-07-01), Thomas
patent: 4176935 (1979-12-01), Smith
patent: 4417281 (1983-11-01), Hama
patent: 4445757 (1984-05-01), Eromoto et al.
patent: 4446526 (1984-05-01), Iwanade
patent: 4568165 (1986-02-01), Ishibushi

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