Automatic focussing apparatus

Details Automatic focussing apparatus Automatic focussing apparatus

1978-03-14

1979-10-23

Gellner, Michael L.

Optics: motion pictures

Removable film strip magazine type

352140, 354 31, 354 60L, G03B 310, G03B 708

Patent

active

041718852

ABSTRACT:
An automatic focussing apparatus is provided with a contrast sensor which senses the contrast of reflective light from an object being photographed and produces a signal indicative of the incapability of a focussing operation whenever the sensed result represents a low contrast.

REFERENCES:
patent: 4053934 (1977-10-01), Kornreich et al.
patent: 4091275 (1978-05-01), Wilwerding

Affiliated with

Also associated with

Rating

Automatic focussing apparatus 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 focussing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic focussing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-407859