Auto focus camera with electronic lens disc pawl release arrange

Details Auto focus camera with electronic lens disc pawl release arrange Auto focus camera with electronic lens disc pawl release arrange

1980-06-03

1981-12-29

Hix, L. T.

G03B 1320

Patent

active

043079520

ABSTRACT:
An automatic focusing control apparatus focuses subjects in any one of a plurality of different camera-to-subject distance ranges by transmitting a sonar ranging signal and at the same time displacing an objective lens to move through a plurality of different focal positions corresponding respectively to the different camera-to-subject distance ranges, and thereafter detecting an echo signal from a subject and utilizing the detected echo signal to provide a specially timed control signal to ultimately stop the displacement of the objective lens at the appropriate focal position corresponding to the distance range in which the subject is located.

REFERENCES:
patent: 4040072 (1977-08-01), Johnson et al.
patent: 4148574 (1979-04-01), Johnson
patent: 4167316 (1979-09-01), Johnson et al.
patent: 4199244 (1980-04-01), Shenk
patent: 4199246 (1980-04-01), Muggli

Affiliated with

Also associated with

Rating

Auto focus camera with electronic lens disc pawl release arrange does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Auto focus camera with electronic lens disc pawl release arrange, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auto focus camera with electronic lens disc pawl release arrange will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1016125