Focus adjusting device for camera

Details Focus adjusting device for camera Focus adjusting device for camera

1984-04-12

1986-02-04

Adams, Russell E.

Optics: motion pictures

Removable film strip magazine type

352140, G03B 1302

Patent

active

045681651

ABSTRACT:
A focusing adjusting device for a camera which uses the rotation of a motor shaft to move a photographing lens into focus includes an operating member which is movable to a number of positions. Each position of the operating member specifies a particular rotational direction and a particular rotational speed of the motor shaft. A detecting member is used for detecting the operating mode and the position of the operating member, and for generating detection signals in accordance with these detected parameters. Also provided is a rotation control circuit for receiving the detection signals and rotating the motor shaft at a direction and at a speed in accordance with the position and operating mode of the operating member.

REFERENCES:
patent: 4176935 (1979-12-01), Smith
patent: 4299457 (1981-11-01), Ducommun

Affiliated with

Also associated with

Rating

Focus adjusting device for camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Focus adjusting device for camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focus adjusting device for camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2337456