Camera having a focus detecting apparatus

Details Camera having a focus detecting apparatus Camera having a focus detecting apparatus

1987-09-28

1988-09-27

Adams, Russell E.

354480, 354481, 354482, G03B 300

Patent

active

047745398

ABSTRACT:
In a camera provided with a focus detecting apparatus in which the object light passed through a photo-taking lens is limited in its passage area by a field mask, the secondary image of an object to be photographed is obtained by a secondary imaging optical system and the secondary image is received by a line sensor and the imaging condition of the photo-taking lens is detected on the basis of the photoelectrically converted output of the line sensor, the opening area of the field mask is set so that the secondary image of the object to be photographed is directed to the both sides of the line sensor, and spot photometering sensors are disposed on the both sides of the line sensor and in the area to which the secondary image is applied, so that the photometering center of gravity is positioned substantially on the line sensor.

REFERENCES:
patent: 4047187 (1977-09-01), Mashimo et al.
patent: 4410258 (1983-10-01), Aoki et al.
patent: 4429966 (1984-02-01), Hosoe et al.
patent: 4483604 (1984-11-01), Hiramatsu
patent: 4488799 (1984-12-01), Suzuki et al.
patent: 4526458 (1985-07-01), Kawamura et al.
patent: 4529287 (1985-07-01), Karasaki et al.
patent: 4552445 (1985-11-01), Mukai et al.
patent: 4561750 (1985-12-01), Matsumura
patent: 4563068 (1986-01-01), Kimura et al.
patent: 4573784 (1986-03-01), Suzuki
patent: 4636624 (1987-01-01), Ishida et al.
patent: 4699493 (1987-10-01), Koyama et al.
patent: 4712901 (1987-12-01), Ohtaka
patent: 4728785 (1988-03-01), Ohnuki et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2400067