发明名称 |
OPTICAL SENSOR AND IMAGE FORMING APPARATUS |
摘要 |
In an optical sensor, a light emission system emits an irradiated light of a linear polarization in a first polarization direction toward a surface of a target object having a sheet shape from an incident direction which is inclined with respect to a normal direction of the surface. A first light detection system includes a first light detector arranged on a first light path of a specular reflected light, which is emitted from the light emission system and is specularly reflected from the target object. A second light detection system includes a second light detector arranged on a second light path of a diffuse reflected light which is diffusely reflected from an incident plane on the target object. The second light detector receives second light passed by an optical element which passes a linear polarization component of a second polarization direction perpendicular to the first polarization direction. |
申请公布号 |
US2016377540(A1) |
申请公布日期 |
2016.12.29 |
申请号 |
US201615261264 |
申请日期 |
2016.09.09 |
申请人 |
OHBA Yoshihiro;SUGAWARA Satoru;ISHll Toshihiro;HOSHI Fumikazu |
发明人 |
OHBA Yoshihiro;SUGAWARA Satoru;ISHll Toshihiro;HOSHI Fumikazu |
分类号 |
G01N21/47;G01N21/21;G01N33/34;G03G15/00 |
主分类号 |
G01N21/47 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Miyagi JP |