Device for adjusting a video tape camera shutter mechanism

Details Device for adjusting a video tape camera shutter mechanism Device for adjusting a video tape camera shutter mechanism

1985-07-03

1987-10-13

Hayes, Monroe H.

Optics: motion pictures

Shutters

Rotary

352214, 352217, G03B 910

Patent

active

046994831

ABSTRACT:
A focal plane shutter for a video camera has a pair of disks rotated in the same direction about a common axis in synchronism with the raster scan blanking interval. The disks each have one or more openings which overlie one another to define a light admitting shutter aperture positioned to illuminate the video pickup device. An adjustment mechanism allows continuous adjustment of the shutter aperture while the disks are rotating. The adjustment mechanism has a slotted tube keyed to a pair of co-axial hub members which are adjustably rotated relative to one another when the slotted tube is moved axially.

REFERENCES:
patent: 1067750 (1913-07-01), Niles
patent: 1590361 (1926-06-01), Garbutt et al.
patent: 2131850 (1938-10-01), Wall
patent: 3196457 (1965-07-01), Buck
patent: 3490835 (1970-01-01), Nemeth et al.
patent: 3602585 (1971-08-01), Steibl et al.
patent: 3775002 (1973-11-01), Moriyama

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