Non-imaging optical corner turner
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United States of America Patent
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Nov 16, 2004
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N/A
app pub date -
Dec 10, 1997
filing date -
Dec 10, 1997
priority date (Note) -
Expired
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Abstract
The present invention provides a device and method to efficiently turn light from an optical fiber around a corner while avoiding the frustrated-TIR loss that would occur if the fiber were bent. The invention uses non-imaging optics which efficiently deal with beam divergence half-angles less than 90.degree.. By recognizing that most light from a fiber optic source will have a divergence half-angle of less than 90 degrees, a practical solution is achieved using non-imaging optics.
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