Light extraction elements
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United States of America Patent
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Aug 15, 2017
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N/A
app pub date -
Oct 31, 2013
filing date -
Oct 31, 2012
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Abstract
A light guide is provided. The light guide includes a first major surface comprising an array of Z-shaped extraction elements. Each Z-shaped extraction element includes: a first face; a second face adjoining the first face, wherein the first face and an upper portion of the second face define an indentation projecting inwardly from a plane defined by the first major surface; and a third face adjoining the second face, wherein the third face and a lower portion of the second face define a protrusion projecting outwardly from the plane defined by the first major surface.
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