Shutter opening angle control device for a motion picture camera

Details Shutter opening angle control device for a motion picture camera Shutter opening angle control device for a motion picture camera

1979-09-07

1982-03-30

Hayes, Monroe H.

Optics: motion pictures

Special effects

Transition effects

352217, G03B 2136

Patent

active

043221408

ABSTRACT:
In the disclosed motion picture shutter angle control device, a motor serves exclusively for varying the shutter opening angle formed with a number of shutter blades. A detector detects when a predetermined shutter opening angle is obtained and delivers a signal which is used in a fade operation and the overlap operation to change the maximum opening angle.

REFERENCES:
patent: 1673120 (1928-06-01), Oiler
patent: 2913969 (1959-11-01), Faulhaber
patent: 3230847 (1966-01-01), Gregory et al.
patent: 3295424 (1967-01-01), Biber
patent: 3419325 (1968-12-01), Mayr et al.
patent: 3635549 (1972-01-01), Stieringer

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