Lens and light-emitting device employing same
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United States of America Patent
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Oct 31, 2017
Issued Date -
N/A
app pub date -
Oct 26, 2015
filing date -
Jul 31, 2015
priority date (Note) -
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Abstract
The present disclosure relates to a lens. The lens includes a bottom surface, a top surface, and a side surface. The side surface is connected to the bottom surface and the top surface, and between the top surface and the bottom surface. The center of the bottom surface is recessed towards the top surface, and forms a groove. The top surface is recessed towards the bottom surface, and the top surface is concave. The groove includes a top incident surface and a side incident surface. The side incident surface is connected to the top incident surface and the bottom surface. Some micro-structures are set on the top incident surface and form a rough surface. Some reflective films are set on the side incident surface. The present disclosure also relates to a light-emitting device employing the lens.
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