Light receiving device
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United States of America Patent
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Sep 1, 2015
Grant Date -
Mar 19, 2015
app pub date -
Nov 19, 2014
filing date -
Feb 12, 2013
priority date (Note) -
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Abstract
A light receiving device has a light receiving section for receiving a remote control signal light beam, and a light guide section for guiding the light beam to the light receiving section. The light guide section has a first reflection surface for reflecting the light beam to the light receiving section, the first reflection surface being disposed to oppose obliquely at a sharp angle to an entrance plane, and a second reflection surface for guiding the remote control signal light beam, the second reflection surface being disposed between the entrance plane and the first reflection surface. The first reflection surface includes a circular arc curved surface curved outward in a part closer to the entrance plane and farther from the light receiving section, and a linear inclined surface in a part approaching the light receiving section from the curved surface.
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