Optics: motion pictures – Shutters – Rotary
Patent
1986-12-29
1988-05-10
Hayes, Monroe H.
Optics: motion pictures
Shutters
Rotary
352214, 358225, G03B 910
Patent
active
047431083
ABSTRACT:
A dynamic shutter mechanism for use with a still or motion video camera which is operable at variable shutter speeds to capture high speed events. The shutter mechanism includes a pair of apertured shutter discs which are independently driven by separate motors. Phase lock loop control circuits lock the speed and phase of each disc to the vertical and horizontal sync rates of the video camera. The video signal produced by the video camera produces a control signal which is indicative of the intensity of light of a captured scene. The control signal controls the speed of the shutter mechanism by changing the relative rotational position of the shutters and consequently the relative exposure aperture. In a preferred shutter mechanism the shutter discs are mounted coaxially and are driven by coaxial disc motors.
REFERENCES:
patent: 3300271 (1967-01-01), Yamamoto
patent: 3303271 (1967-02-01), Hecker
patent: 3490835 (1970-01-01), Ornemeth et al.
patent: 3531194 (1970-09-01), Roppel et al.
patent: 3602585 (1971-08-01), Steibl et al.
patent: 3787116 (1974-01-01), Shimizu
patent: 4161000 (1979-07-01), Cleveland
patent: 4171529 (1979-10-01), Silberberg et al.
patent: 4257693 (1981-03-01), Hirata et al.
patent: 4301476 (1981-11-01), Keller et al.
patent: 4471388 (1984-09-01), Dischert
patent: 4504866 (1985-03-01), Saito
patent: 4532550 (1985-07-01), Bendell et al.
patent: 4545659 (1985-10-01), Swinehart et al.
patent: 4551763 (1985-11-01), Swinehart et al.
patent: 4571629 (1986-02-01), Horio et al.
Fiscella Mark D.
Vogel Richard M.
Eastman Kodak Company
Hayes Monroe H.
Noval William F.
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