Motion picture camera with adjustable rotary shutter

Details Motion picture camera with adjustable rotary shutter Motion picture camera with adjustable rotary shutter

1991-07-26

1992-08-11

Hayes, Monroe H.

Optics: motion pictures

Shutters

Rotary

352214, 352217, G03B 910

Patent

active

051373467

ABSTRACT:
In the disclosed moving picture camera with an adjustable rotary shutter, the shutter has a rotary shutter and an adjusting blade. The shutter adjusting blade is adjustable coaxially to the rotary shutter, which adjusts a shutter aperture angle. A transmission and a positioning motor adjust the adjusting blade relative to the rotary shutter. A potentiometer is connected to the shutter adjusting blade and to the rotary shutter, for measuring the position of the shutter adjustment blade in relation to the rotary shutter. The potentiometer generates a position signal indicating the actual position of the shutter adjustment blade in relation to the rotary shutter.

REFERENCES:
patent: 4322140 (1982-03-01), Takimoto et al.
patent: 4576456 (1986-03-01), Okino et al.

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