Automatic focus adjustment circuitry for motion picture cameras

Details Automatic focus adjustment circuitry for motion picture cameras Automatic focus adjustment circuitry for motion picture cameras

1978-12-01

1980-01-22

Adams, Russell E.

Optics: motion pictures

With focus control

354 25, 354195, G03B 300

Patent

active

041847539

ABSTRACT:
In a motion picture camera, the response of a device for automatic focus adjustment is retarded, so that the change in the focus condition of the camera and the resultant change in angle of view and magnification of the image do not take place so rapidly during the photographing. An integrating circuit is provided to retard a signal indicative of out-of-focus condition, or a pulse generator is provided to intermittently power a drive motor for focus adjustment. The integrating circuit and the pulse generator are actuated concurrently with commencement of photographing.

REFERENCES:
patent: 4157217 (1979-06-01), Isono

Affiliated with

Also associated with

Rating

Automatic focus adjustment circuitry for motion picture cameras does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic focus adjustment circuitry for motion picture cameras, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic focus adjustment circuitry for motion picture cameras will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-331809