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OPTICAL DEVICE SHAPING

  • US 20090275157A1
  • Filed: 06/26/2009
  • Published: 11/05/2009
  • Est. Priority Date: 10/02/2006
  • Status: Abandoned Application
First Claim
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1. A method of manufacturing an optical device comprising:

  • providing a desired substrate shape for an optical device having a shaped substrate portion comprising;

    an interface to a non-substrate layer adapted to receive light generated in a light emitting region of the optical device;

    an exit face that has at least 70% of a minimum area necessary to conserve radiance for a desired half-angle of light projected from the LED, wherein the exit face is a select distance from the interface;

    a set of sidewalls, each sidewall positioned and shaped to cause at least a majority of rays having a straight transmission path from the interface to that sidewall to reflect to the exit face with an angle of incidence at the exit face at less than or equal to a critical angle at the exit face;

    shaping a substrate material based on the desired substrate shape to form shaped substrate portions of one or more optical devices.

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