Shutter control device for a camera having a shutter release loc

Details Shutter control device for a camera having a shutter release loc Shutter control device for a camera having a shutter release loc

1981-04-10

1982-12-07

Adams, Russell E.

354 60R, 354242, 354267, 354289, G03B 908, G03B 700

Patent

active

043623735

ABSTRACT:
A shutter control device for a camera having an automatic exposure time control device provided with a comparator circuit for comparing a time output corresponding to the lapse of time from the opening operation of a shutter with a proper shutter speed output representing a proper shutter speed and for generating a comparison output when the two outputs are in a predetermined relation and a magnet for blocking the closing operation of the shutter by energization, the magnet being adapted to be deenergized in response to the comparison output to close the shutter, and a shutter release lock device provided with voltage detecting means for detecting a power source voltage and for deenergizing and magnet before the opening operation of the shutter when the power source voltage is below a reference value and blocking means for blocking the opening operation of the shutter by the deenergization of the magnet before the opening operation of the shutter includes means for forcibly energizing the magnet until the start of the opening operation of the shutter in response to shutter release operation. The means for forcibly energizing the magnet becomes operative in response to the output of the voltage detecting means when the power source voltage is greater than the reference value.

REFERENCES:
patent: 3829877 (1974-08-01), Kitai
patent: 4096503 (1978-06-01), Sato
patent: 4143958 (1979-03-01), Ishiguro et al.
patent: 4161764 (1979-07-01), Ishiguro et al.
patent: 4190337 (1980-02-01), Schutze et al.
patent: 4190344 (1980-02-01), Ishiguro et al.

Affiliated with

Also associated with

Rating

Shutter control device for a camera having a shutter release loc 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 control device for a camera having a shutter release loc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shutter control device for a camera having a shutter release loc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1900036