发明名称 |
OPTICAL SENSOR AND IMAGE FORMING DEVICE |
摘要 |
An optical sensor includes: a light emission module to emit a linearly polarized light beam having a first polarizing direction to a surface of an object in an incident direction inclined relative to a direction of a normal to the surface; a first photodetector module including a first photodetector disposed within a plane of incidence of the surface in an optical path inclined relative to an optical path of a light beam emitted from the light emission module and regularly reflected on the surface; and a second photodetector module including an optical element disposed within the plane of incidence of the surface in an optical path of a diffused reflection light beam from the surface to separate a linearly polarized light beam having a second polarizing direction perpendicular to the first polarizing direction, and a second photodetector to receive the light beam separated by the optical element.
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申请公布号 |
US2013235377(A1) |
申请公布日期 |
2013.09.12 |
申请号 |
US201313787952 |
申请日期 |
2013.03.07 |
申请人 |
ISHII TOSHIHIRO;OBA YOSHIHIRO;HOSHI FUMIKAZU;ADACHI KAZUHIKO;SUGAWARA SATORU;RICOH COMPANY, LTD. |
发明人 |
ISHII TOSHIHIRO;OBA YOSHIHIRO;HOSHI FUMIKAZU;ADACHI KAZUHIKO;SUGAWARA SATORU |
分类号 |
G01N21/21 |
主分类号 |
G01N21/21 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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