Automatic focus detecting apparatus of a camera

Details Automatic focus detecting apparatus of a camera Automatic focus detecting apparatus of a camera

1982-01-15

1983-10-11

Gellner, Michael L.

354 31, G03B 300

Patent

active

044088540

ABSTRACT:
An automatic focus detecting apparatus of a camera comprises a focus detecting unit for receiving the light from an object to be photographed and producing a focus detection output, a driving circuit responsive to the focus detection output to effect at least one of the driving of a phototaking lens and focus condition display, an object brightness detecting unit for producing a brightness detection output corresponding to the brightness of the object, means for producing a time count starting signal, a timer circuit adapted to start time count in response to the time count starting signal and produce a blocking signal in response to the brightness detection output for a short time if the brightness is high or for a long time if the brightness is low, and a blocking circuit for preventing the driving circuit from responding to the focus detection output during the time the blocking signal is produced.

REFERENCES:
patent: 3967056 (1976-06-01), Yata et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1272042