Camera with a multi-zone focus detecting device

Details Camera with a multi-zone focus detecting device Camera with a multi-zone focus detecting device

1990-09-21

1993-06-08

Gellner, Michael L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

35821319, 358227, G03B 1300

Patent

active

052183955

ABSTRACT:
A camera with a multi-zone focus detecting device has an objective lens mounted on a camera. An image formed by the objective lens is divided into a plurality of zones. In each zone, a focusing condition is detected based on the image formed by the objective lens so as to produce a plurality of focusing condition data. Based on the result of the focusing conditions, one zone is selected. Furthermore, a light which has passed through the objective lens is measured separately in each zone so as to produce a plurality of measured light data. Based on a focusing condition data obtained from the selected zone, the objective lens is driven to an infocus condition. When the objective lens is driven to the infocus condition, a measured light data obtained from the selected zone is used for calculating exposure data with which the exposure is controlled.

REFERENCES:
patent: 3836919 (1974-09-01), Matsumoto et al.
patent: 4334150 (1982-06-01), Herbst et al.
patent: 4387975 (1983-06-01), Araki
patent: 4410258 (1983-10-01), Aoki et al.
patent: 4423936 (1984-01-01), Johnson
patent: 4445761 (1984-05-01), Ishikawa et al.
patent: 4477167 (1984-11-01), Ishikawa et al.
patent: 4492448 (1985-01-01), Ishikawa et al.
patent: 4509842 (1985-04-01), Taniguchi et al.
patent: 4536072 (1985-08-01), Taniguchi et al.
patent: 4563576 (1986-01-01), Matsumura et al.
patent: 4614418 (1986-09-01), Ishikzaki et al.
patent: 4614865 (1986-09-01), Hayashi
patent: 4636624 (1987-01-01), Ishida et al.
patent: 4693581 (1987-09-01), Yamaki et al.
patent: 4768052 (1988-08-01), Hamada
patent: 4774401 (1988-09-01), Yamada et al.
patent: 4910548 (1990-03-01), Taniguchi et al.
patent: 4952966 (1990-08-01), Ishida et al.
patent: 4979045 (1990-12-01), Tanaguchi et al.

Affiliated with

Also associated with

Rating

Camera with a multi-zone 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 Camera with a multi-zone focus detecting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera with a multi-zone focus detecting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1945457