Optical element and optical device
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United States of America Patent
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Jan 9, 2018
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N/A
app pub date -
Oct 15, 2014
filing date -
Nov 20, 2013
priority date (Note) -
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Abstract
An optical element of an embodiment includes an optical element made of a material transparent to light, the optical element including: a back surface facing the front surface; and a connection surface. The front surface includes a recessed surface in a region facing the connection surface. The recessed surface has a point closest to the connection surface as a closest point, and has a first singular point other than the closest point.
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