Ultra thin lighting element
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United States of America Patent
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Jul 21, 2009
Grant Date -
Nov 24, 2005
app pub date -
May 2, 2005
filing date -
Apr 30, 2004
priority date (Note) -
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Abstract
An ultra thin lighting element including at least one light source. A lightguide element includes one lightguide layer comprising a plurality of discrete fine optic surface relief structures on at least one portion of at least one surface. Each surface relief structure includes basic structural features on the order of about 10 microns or less in height, and on the order of about 10 microns or less in each lateral dimension. The number, arrangement and size of each surface relief structure and height and lateral dimensions of the structural features of the surface relief structures being varied to provide a desired degree of outcoupling modulation of light incoupled into the light guide element.
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