Planar lighting device
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United States of America Patent
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May 23, 2017
Issued Date -
N/A
app pub date -
Sep 9, 2015
filing date -
Sep 10, 2014
priority date (Note) -
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Abstract
In a first aspect of the present inventive subject matter, a planar light guide device includes light-emitting elements arranged on a surface of a substrate to be an alignment on a center line between two long edges of the surface of the substrate; and a light-transmitting resin including a region in which optical elements are arranged at a first side and a second side of the light-transmitting resin, and the optical element includes a first surface and a second surface that is smaller in area than the first surface, and the first surface of the optical element is inclined with an angle that is in a range of one to 40 degrees with respect to a surface that is perpendicular to the mounting surface of the substrate with an edge of the surface in parallel with the center line between the two long edges of the surface of the substrate.
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Cited Art Landscape
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