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Optical element and method of forming an optical element

  • US 9,798,072 B2
  • Filed: 08/28/2015
  • Issued: 10/24/2017
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. An optical element, comprising:

  • an optically transparent substrate;

    first and second pluralities of light extraction features of optically transparent material that exhibit total internal reflection respectively disposed on opposing first and second sides of the substrate; and

    a waveguide body wherein the light extraction features of one of the first and second pluralities secure the substrate to the waveguide body;

    wherein the first and second pluralities of light extraction features are non-adhesively bonded to the optically transparent substrate;

    wherein the light extraction features of one of the first and second pluralities are non-adhesively bonded to the waveguide body; and

    wherein the optical element comprises non-adhesive bonds on at least three surfaces thereof.

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