Dimmer for fiber optic light transmission systems
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United States of America Patent
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Apr 9, 1991
Grant Date -
N/A
app pub date -
Mar 9, 1990
filing date -
Mar 9, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dimmer for adjustably attenuating light to a fiber optic bundle. An opaque vane has a movement axis with a band on each side. One band has a substantially opaque portion which blocks about 50% of the light of a spot directed against the vane, and an opaque portion for passing about 50%. The other band has transmission slots interspaced between opaque bars, proportioned and arranged to pass varying amounts of light, all as a function of the position of the vane. The light passed by the bands is additive.
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