Photographic camera with automatic focussing system

Optics: motion pictures – Removable film strip magazine type

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

352140, 354 25, G03B 300, G03B 708

Patent

active

042655285

ABSTRACT:
Upon termination of shooting, the exposure objective of a still or motion-picture camera is automatically returned to a predetermined starting position, such as at the middle of the available range of distance-settings. If the camera's focussing system is fully automatic, this is preferably achieved by overriding normal operation of the focussing system by a command signal indicating that the objective is to be brought to starting position and substituted for the normal-operation command signal generated in dependence upon physically measured camera-to-subject distance. If the normal-operation command signal of the system is manually selected, as in the case of a closed-loop positioning system wherein the command transducer is manually adjusted, or as in the case of an open-loop positioning system in which the actuating signal of the system is manually established, the signal commanding or actuating a return to starting setting is likewise substituted for the normal-operation command or actuating signal.

REFERENCES:
patent: 3886567 (1975-05-01), Matsumoto et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Photographic camera with automatic focussing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photographic camera with automatic focussing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic camera with automatic focussing system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-294030

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.