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LENS WITH TIR FOR OFF-AXIAL LIGHT DISTRIBUTION

  • US 20090290360A1
  • Filed: 07/15/2008
  • Published: 11/26/2009
  • Est. Priority Date: 05/23/2008
  • Status: Active Grant
First Claim
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1. A lens for directing light from a light emitter in a preferential-side off-axial direction with respect to the emitter axis, comprising:

  • an emitter-adjacent base end forming an opening;

    an inner surface extending from the base end with (a) a surrounding lateral surface formed about the emitter axis and (b) an end surface configured to direct light toward the preferential side, the inner surface forming a void;

    an output-end surface configured to direct light toward the preferential side; and

    an outer lateral surface configured for TIR to direct light toward the output-end surface,whereby light from the emitter exits the output-end surface predominantly toward the preferential side.

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