Exposure controlling circuit for electric shutter

Details Exposure controlling circuit for electric shutter Exposure controlling circuit for electric shutter

1978-10-13

1980-04-29

Adams, Russell E.

354 23D, 354 60R, 354 60L, G03B 708

Patent

active

042003750

ABSTRACT:
An exposure controlling circuit for electric shutters comprising a timer circuit which can determine a proper exposure time in response to the brightness of an object to be photographed and another time circuit which can determine the specific shortest exposure time in order to regulate the exposure time to be determined by the brightness of the object to be photographed to be less than the shortest exposure time obtainable by the inherent performance of the shutter mechanism to be used, whereby when the states of the above mentioned two time circuit started to act simultaneously in relation to the shutter release operation are reversed to each other, the shutter is closed. The above mentioned specific shortest exposure time can be selected.

REFERENCES:
patent: 3500729 (1970-03-01), Rentschler et al.
patent: 3641902 (1972-02-01), Kikuchi et al.
patent: 3798664 (1974-03-01), Matsuda
patent: 3914776 (1975-10-01), Tsujimoto et al.

Affiliated with

Also associated with

Rating

Exposure controlling circuit for electric shutter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exposure controlling circuit for electric shutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure controlling circuit for electric shutter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1682167