Motion detecting device in exposure control system for optical i

Details Motion detecting device in exposure control system for optical i Motion detecting device in exposure control system for optical i

1980-07-22

1982-03-23

Gellner, Michael L.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250203R, 354 5D, 354 60R, G01J 120, G03B 7083

Patent

active

043209483

ABSTRACT:
The present invention relates to a motion detecting device for detecting the relative motion rate or velocity between an object and an optical instrument in an exposure control system by which the exposure time, i.e. the shutter speed of the instrument is controlled in response to the relative motion rate or velocity. The motion detecting device is designed to detect the displacement ratio or speed of the position of the center of gravity of the light distribution of the object image on the imaging plane, whereby the danger for misdetection due to the periodical fluctuation of the object brightness can be profitably avoided, being possible to detect only the relative movement between the object and the instrument.

REFERENCES:
patent: 3351493 (1967-11-01), Weiman et al.
patent: 3399307 (1968-08-01), Levin
patent: 3532892 (1970-10-01), Murphy
patent: 3535525 (1970-10-01), Minkowitz
patent: 3693013 (1972-09-01), Dueker
patent: 3742223 (1973-06-01), Carr et al.

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