Shutter for a photogrammetric camera

Details Shutter for a photogrammetric camera Shutter for a photogrammetric camera

1989-08-30

1990-07-17

Gellner, Michael L.

354 65, 354254, G03B 700, G03B 920

Patent

active

049424157

ABSTRACT:
The invention is directed to a shutter wherein the rotary discs thereof are accelerated out of a standstill start position for each exposure operation and are again brought to standstill at the end of the exposure operation. The start position is computed such that a constant access time results for all exposure times. An electronic control circuit for the shutter includes a position-control circuit and a speed-control circuit. During each exposure operation, the drive for the rotary discs of the shutter are switched between the two control loops.

REFERENCES:
patent: 2926582 (1960-03-01), Sonnberger
patent: 3735687 (1973-05-01), Park
patent: 4616911 (1986-10-01), Zeth et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-96931