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Coated light-turning feature with auxiliary structure

  • US 8,866,757 B2
  • Filed: 12/27/2010
  • Issued: 10/21/2014
  • Est. Priority Date: 12/29/2009
  • Status: Active Grant
First Claim
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1. An illumination device comprising:

  • a light guide including light-turning features, wherein the light-turning features include recesses formed on the light guide and extending down into the light guide;

    a material coating at least some of the recesses; and

    an auxiliary structure formed outside of the recesses and on the light guide, the auxiliary structure at least partially formed of the material coating at least some of the recesses, and spaced apart from the material coating the at least some of the recesses,wherein the light guide has a top surface,wherein the light-turning features are formed on the top surface of the light guide, andwherein the auxiliary structure contacts the top surface of the light guide.

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