Shutter mechanism for a video tape camera

Details Shutter mechanism for a video tape camera Shutter mechanism for a video tape camera

1985-07-03

1987-02-17

Hayes, Monroe H.

Optics: motion pictures

Shutters

Rotary

352214, 352208, G03B 910

Patent

active

046435484

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. The opening in at least one of the disks is counterbalanced during rotation by a recessed relief area which does not extend through the disk, or by a weighted plate attached to the disk.

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.

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