Automatic focusing apparatus with plural light receiving devices

Details Automatic focusing apparatus with plural light receiving devices Automatic focusing apparatus with plural light receiving devices

1997-03-17

1998-12-01

Le, Que

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

2502017, G01J 120

Patent

active

058442316

ABSTRACT:
An automatic focusing apparatus includes a telephotographic system and a focus detecting device which detects a focus state of a plurality of variable sized, symmetrically shaped focus detecting portions by designating a center of a visual field of the telephotographic system as a center of the focus detecting device. A judging device judges a narrowest focus detecting portion as being effective among the focus detecting portions and which obtains a reliability of at least a predetermined value.

REFERENCES:
patent: 4394569 (1983-07-01), Nakamura
patent: 4485303 (1984-11-01), Suzuki
patent: 4491402 (1985-01-01), Suzuki
patent: 5483318 (1996-01-01), Hamada et al.
patent: 5530514 (1996-06-01), Lisson et al.
patent: 5664236 (1997-09-01), Utagawa

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2397412