CONDUIT FOR COUPLING LIGHT SOURCE INTO THIN WAVEGUIDE FILM
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United States of America Patent
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Oct 27, 2016
app pub date -
Apr 24, 2015
filing date -
Apr 24, 2015
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Abstract
This disclosure provides systems, methods and apparatus for increasing the efficiency of frontlight systems using thin waveguides. In one aspect, a narrowing reflective conduit can be used to condense light from a light source which is thicker than the waveguide, and inject it into the waveguide. A phosphor strip at the exit aperture of the narrowing reflective conduit can inject light with a diffuse directional profile independent of the directional profile of light within the narrowing reflective conduit.
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