Focus detecting device

Details Focus detecting device Focus detecting device

1993-12-28

1995-04-25

Perkey, W. B.

354409, G03B 1336

Patent

active

054103835

ABSTRACT:
A focus detecting device comprises an image forming optical system, a device for detecting the defocus amount with respect to a predetermined plane of a plurality of images, formed by the image forming optical system, of fields corresponding to a plurality of detection areas which are set beforehand, a device for classifying the plurality of detection areas into a plurality of groups on the basis of the defocus amount, a device for selecting one optimum group from the plurality of groups, and a device for determining one final defocus amount on the basis of the defocus amount corresponding to detection areas belonging to the optimum group.

REFERENCES:
patent: 4470681 (1984-09-01), Johnson
patent: 4827303 (1989-05-01), Tsuboi
patent: 4943824 (1990-07-01), Nabeshima et al.
patent: 5191201 (1993-03-01), Kusaka et al.

Affiliated with

Also associated with

Rating

Focus detecting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Focus detecting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focus detecting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1571187