Shutter device in automatic focusing and exposure camera

Details Shutter device in automatic focusing and exposure camera Shutter device in automatic focusing and exposure camera

1995-04-13

2000-11-07

Adams, Russell E.

354430, G03B 708

Patent

active

RE0369454

ABSTRACT:
A shutter device of a camera which includes first and second sector mechanisms which constitute a lens shutter and which are independently opened and closed to define an aperture. A photometer, for detecting the luminance of an object to be photographed, and a diaphragm controller for controlling the aperture defined by the second sector mechanism, in accordance with luminance data detected by the photometer, are provided. A shutter opening element is provided which normally closes the first sector mechanism and opens the first sector mechanism when the second sector mechanism is held to define a predetermined aperture determined by the diaphragm controller, and a shutter closing element is provided which closes the second sector mechanisms at a predetermined timing in accordance with the luminance data of the photometer after the first sector mechanism is opened by the shutter opening element.

REFERENCES:
patent: 3393621 (1968-07-01), Kitanosono et al.
patent: 3820131 (1974-06-01), Tanaka
patent: 4065776 (1977-12-01), Iwata et al.
patent: 4227792 (1980-10-01), Rentschler
patent: 4868596 (1989-09-01), Ishida et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1628942