Diagonal sweep shutter mechanism for video tape camera
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United States of America Patent
Stats
-
Nov 5, 1985
Grant Date -
N/A
app pub date -
Dec 16, 1983
filing date -
Dec 16, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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 have openings which overlie one another and define a light admitting shutter aperture positioned to illuminate the video pickup. Each opening is bounded on first and second sides by lines emanating from a point on the disk which is offset from the disk's axis of rotation preferably by a distance equal to the length of the diagonal of the raster. This enables an even exposure of the video pickup, of equal areas at equal times, no matter where the pickup is positioned relative to the disk's axis of rotation.
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Family
International Classification(s)
- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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