Auto focusing apparatus in a camera

Photography – With exposure objective focusing means – focusing aid – or... – Plural focusing or rangefinding areas

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

396128, G03B 1336

Patent

active

055614973

ABSTRACT:
An auto focusing apparatus in a camera comprises a detecting device for detecting the measured distance values of an object corresponding to a plurality of areas in a photographing image field, a first determining device for determining a first measured distance value which is the measured distance value of the shortest distance from the plurality of measured distance values detected by the detecting device, a comparing device for comparing the first measured distance value determined by the first determining device with a threshold value, a second determining device for determining the mean value of the plurality of measured distance values detected by the detecting device as a second measured distance value, and a driving device for driving a photo-taking lens on the basis of the first measured distance value when it is judged by the comparing device that the first measured distance value is smaller than the threshold value, and driving the photo-taking lens on the basis of the second measured distance value when it is judged by the comparing device that the first measured distance value is equal to or greater than the threshold value.

REFERENCES:
patent: 4336987 (1982-06-01), Shenk
patent: 4344679 (1982-08-01), Yagi et al.
patent: 4873543 (1989-10-01), Matsuzaki et al.
patent: 5006700 (1991-04-01), Kosaka et al.
patent: 5053801 (1991-10-01), Ishida et al.
patent: 5121151 (1992-06-01), Kawabata et al.
patent: 5191210 (1993-03-01), Kusaka et al.
patent: 5243375 (1993-09-01), Ishida et al.
Masaru Muramatsu, et al. 08/442,175 filed May 16, 1995 Nikon Corporation.
Masaru Muramatsu, et al. 08/519,177 filed Aug. 25, 1995 Nikon Corporation.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

Rate now

     

Profile ID: LFUS-PAI-O-1505775

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.