Optics: motion pictures – Shutters – Rotary
Patent
1983-11-08
1986-03-18
Hayes, Monroe H.
Optics: motion pictures
Shutters
Rotary
G03B 910
Patent
active
045764565
ABSTRACT:
An image sensing system having an image sensing part for sensing the image of an object to be photographed, two shutter blades which block image light, two motors arranged to drive the two shutter blades respectively and a control circuit arranged to keep a turning phase difference unvarying between the two motors.
REFERENCES:
patent: 2166947 (1939-07-01), Fayerweather
patent: 3300271 (1967-01-01), Yamamoto
Okino Tadashi
Saito Syuichiro
Canon Kabushiki Kaisha
Hayes Monroe H.
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