Exposure control device

Details Exposure control device Exposure control device

1975-10-14

1977-03-01

Adams, Jr., Russell E.

354 44, 354 60A, G03B 714

Patent

active

040098664

ABSTRACT:
In an exposure control device of the type comprising exposure means including a plurality of shutter blades which also function as the aperture setting blades, and a step-motor drivingly coupled to said shutter blades for causing them to open and close stepwise so as to define an aperture; and pulse signal generating means adapted to generate the driving pulse or pulses to be applied to said step-motor dependng upon the brightness of a subject, means is provided for locking the step-motor in an inoperative position when the shutter blades remain closed in order to prevent an erratic exposure due to the mechanical shock.

REFERENCES:
patent: 3813680 (1974-05-01), Wagensonner et al.
patent: 3882522 (1975-05-01), Erlichmann

Affiliated with

Also associated with

Rating

Exposure control device 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 control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure control device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1348985