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Optical waveguide and lamp including same

  • US 9,366,396 B2
  • Filed: 12/09/2013
  • Issued: 06/14/2016
  • Est. Priority Date: 01/30/2013
  • Status: Active Grant
First Claim
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1. An optical waveguide, comprising:

  • a body of optically transmissive material defined by outer edges and comprising a width substantially greater than an overall thickness thereof and further comprising a first side, a second side opposite the first side, an interior coupling cavity defined by a surface intersecting the second side and extending from the second side toward the first side, wherein the interior coupling cavity is disposed remote from edges of the body and is configured to receive an LED element, the body of optically transmissive material further comprising a first array of light mixing cavities surrounding the interior coupling cavity and an extraction feature disposed on one of the first and second sides, wherein the light extraction feature at least partially surrounds the interior coupling cavity; and

    wherein the optical waveguide further comprises a total internal reflectance optical member disposed in the interior coupling cavity.

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