Apparatus for dynamic control of light direction in a broad field of view
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United States of America Patent
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-
Mar 20, 2001
Grant Date -
N/A
app pub date -
Feb 15, 2000
filing date -
Jul 9, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for extending the light deflection angle, so a light beam can be dynamically controlled within .+-.90.degree., pitch and yaw. The device comprises an initial dynamic beam deflector and a compound light beam direction mapper. The beam direction mapper includes a beam size reducer, a beam transmission adapter, and a projector. An initial light beam from a light source is deflected a small amount by the initial dynamic beam deflector. The initially deflected light beam is focused by the beam size reducer to a light energy spot on the beam transmission adapter, which transfers the light spot to the projector. The projector emits an output light beam at the far field of its output space with an output deflection angle larger than the initial deflection angle. All components are based on classical geometry optics and the energy of the output light beam is within an order of magnitude of that of the input light beam.
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