Automatic diaphragm control and mirror release devices for camer

Details Automatic diaphragm control and mirror release devices for camer Automatic diaphragm control and mirror release devices for camer

1983-11-23

1985-04-23

Perkey, William B.

354443, 354152, G03B 7087

Patent

active

045126470

ABSTRACT:
In a camera automatic diaphragm control device of the type wherein scene light is measured through the diaphragm aperture during the stopping-down operation thereof, which is arrested when the measured light value reaches a given level with respect to manually set exposure parameters, thereby determining the diaphragm aperture, structure is provided for positively ensuring that the diaphragm aperture is left fully open when the set exposure parameters and the measured light require such diaphragm aperture setting. The diaphragm aperture control device is employed in a single lens reflex camera with a reflex mirror retractable from a viewing position at selected times in dependence on whether the diaphragm aperture remains fully open or is reduced.

REFERENCES:
patent: 3777637 (1973-12-01), Kuramoto et al.
patent: 3896472 (1975-07-01), Yoshiyama et al.
patent: 3922693 (1975-11-01), Matsui
patent: 4142787 (1979-03-01), Ueda et al.
patent: 4264159 (1981-04-01), Ueda et al.
patent: 4339186 (1982-07-01), Yamazaki

Affiliated with

Also associated with

Rating

Automatic diaphragm control and mirror release devices for camer 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 diaphragm control and mirror release devices for camer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic diaphragm control and mirror release devices for camer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-34586