Optics: motion pictures – With automatic diaphragm control
Patent
1976-08-31
1978-05-02
Hayes, Monroe H.
Optics: motion pictures
With automatic diaphragm control
354 56, G03B 708
Patent
active
040871649
ABSTRACT:
A motion picture camera wherein a part of the light entering the camera lens from the subject being photographed is reflected by a reflector on the shutter to a light sensitive element of exposure metering means. In order to insure that, for a given degree of brightness of the scene, the same quantity of light reaches the sensitive element regardless of whether the shutter is in motion or is stationary, an adjustable reflector is interposed between the shutter and the light sensitive element. This adjustable reflector is shifted from one position to another position by operation of the camera release member. A bendable ear is provided for calibration purposes.
REFERENCES:
patent: 3067284 (1962-12-01), Baldwin
patent: 3248166 (1966-04-01), Reinsch
patent: 3486814 (1969-12-01), Kubota
patent: 3497295 (1970-02-01), Stieringer
patent: 3791725 (1974-02-01), Young
Bode Kurt
Vehrke Heinz
Hayes Monroe H.
Rollei-Werke Franke & Heidecke
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