LIGHT GUIDE ELEMENT AND LIGHT SOURCE DEVICE USING THE LIGHT GUIDE ELEMENT
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United States of America Patent
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Issued Date -
Jun 26, 2014
app pub date -
Apr 23, 2013
filing date -
Dec 24, 2012
priority date (Note) -
Abandoned
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Abstract
A light guide element and a light source device using the same are provided. The light guide element has a main body. The side surface is located between the bottom surface and the light-emitting surface. The bottom surface is opposite to the light-emitting surface. The main body has a hollow portion with a cone shape. The cone-shaped hollow portion has a bottom portion and a top portion. The bottom portion is located on the bottom surface of the main body, and has a first hollow cross section area. The top portion is opposite to the bottom surface, and has a second cross section area smaller than the first cross section area. The light source device includes the light guide element and a light emitting diode (LED). The LED is used to emit light into the cone-shape hollow portion through the bottom portion.
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