Shutter device for camera

Details Shutter device for camera Shutter device for camera

1980-04-18

1982-03-30

Adams, Russell E.

354 60R, 354234, G03B 708, G03B 908

Patent

active

043221459

ABSTRACT:
The present invention relates to an electromagnetically driven shutter device for camera, so designed that a detecting means for detecting the displacement speed of the shutter member and the power supply means for supplying the driving energy to the shutter member are provided in such a manner that the output of the power supply means is varied in accordance with the output of the detecting means so as to maintain the displacement speed of the shutter member constant.

REFERENCES:
patent: 3654845 (1972-04-01), Fahlenberg et al.
patent: 3987473 (1976-10-01), Kondo
patent: 4051499 (1977-09-01), Kondo

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