Light collection and illumination systems employing planar waveguide
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United States of America Patent
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Feb 9, 2016
Grant Date -
Nov 4, 2010
app pub date -
Apr 21, 2010
filing date -
Apr 21, 2009
priority date (Note) -
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Abstract
An apparatus for distributing light from a waveguide through a collimating array, or collecting light over a given area into a waveguide. Light received within a waveguide is propagated transmissively and retained by total internal reflection, except in response to impinging upon deflector elements which sufficiently redirect the light to escape the waveguide into a collimator array that aligns and distributes the light. In a light collector, a collection array collects and collimates the received light and directs it at the surface of a waveguide, within which deflectors properly positioned in relation to each collector of the collector array, deflect the angle of the light so that it propagates through the waveguide in response to total internal reflection. The apparatus can be fabricated into an efficient and compact form.
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