Movie camera having adjustable shutter

Details Movie camera having adjustable shutter Movie camera having adjustable shutter

1996-05-30

1998-12-15

Metjahic, Safet

Optics: motion pictures

Shutters

Rotary

352206, G03B 910

Patent

active

058502777

ABSTRACT:
A shutter system for a movie camera or the like for controlling the film exposure including a main shutter wheel rotatably mounted on main drive shaft driven by a first motor and at least one adjustable shutter wheel positioned adjacent to and coaxially rotating with the main shutter wheel, the adjustable shutter wheel being mounted on a secondary shaft independently driven by a second motor. Both the aperture (determined by the relative positions of the shutter wheels of the main shutter wheel and adjustable shutter wheel) and the shutter speed are set by a controller which regulates the speed of each of the motors.

REFERENCES:
patent: 3300271 (1967-01-01), Yamamoto
patent: 4022525 (1977-05-01), Boudouris
patent: 4355279 (1982-10-01), Younge
patent: 4576456 (1986-03-01), Okino et al.
patent: 4743108 (1988-05-01), Vogel et al.
patent: 4889424 (1989-12-01), Saiki
patent: 5019773 (1991-05-01), Sugiura et al.
patent: 5072162 (1991-12-01), Sato et al.
patent: 5137346 (1992-08-01), Sattler et al.

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