Optical sensor, method for manufacturing optical sensor, optical encoder, torque detection apparatus, and electric power steering apparatus
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United States of America Patent
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Aug 8, 2017
Grant Date -
Oct 23, 2014
app pub date -
Oct 31, 2012
filing date -
Oct 31, 2011
priority date (Note) -
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Abstract
An optical sensor, an optical encoder, a torque detection apparatus, and an electric power steering apparatus less affected by fluctuations in the amount of detected light and with an improved resolution are provided. The optical sensor includes a first polarizing layer that splits incident light to light with a first polarization direction, a first photoreceiver that receives first polarized light split by the first polarizing layer, a second polarizing layer that splits the incident light to light with a second polarization direction, and a second photoreceiver that receives second polarized light split by the second polarizing layer. The first photoreceiver and the second photoreceiver are positioned alternatingly and spaced uniformly with each other.
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