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    Optical sensor device
    1.
    发明授权
    Optical sensor device 失效
    光传感器装置

    公开(公告)号：US5844682A

    公开(公告)日：1998-12-01

    申请号：US406540

    申请日：1995-03-20

    申请人： Hironobu Kiyomoto ,  Naru Yasuda ,  Kouichi Ekawa ,  Hayami Hosokawa

    发明人： Hironobu Kiyomoto ,  Naru Yasuda ,  Kouichi Ekawa ,  Hayami Hosokawa

    IPC分类号： G01B11/30 ,  B60H1/00 ,  B60H3/06 ,  B60S1/08 ,  B60T8/17 ,  G01N21/17 ,  G01N21/21 ,  G02B5/04 ,  G02B5/30 ,  G02B27/28 ,  G01J4/00

    CPC分类号： G02B27/283 ,  B60H1/00785 ,  B60H3/06 ,  B60S1/0818 ,  B60T8/17 ,  G01N21/21 ,  B60H2003/0683 ,  B60S1/0833

    摘要： Whether or not an object is present, the surface state of the object, the material constituting the object and the presence of scattering bodies are discriminated through a simple arrangement which includes a light-emitting element for projecting light upon an object to be sensed, and a polarization beam splitter upon which light reflected from the object (or light transmitted through or scattered from the object) impinges. Reflected light from the polarization beam splitter is received by a first light-receiving element, and transmitted light from the polarization beam splitter is received by a second light-receiving element. The aforesaid discrimination is performed on the basis of the value of S/P, S-P, S-kP or (S-P)/(S+P), where S and P represent light-reception signals from the first and second light-receiving elements, and k is a constant.

    摘要翻译： 物体是否存在，物体的表面状态，构成物体的材料和散射体的存在是通过简单的布置来鉴别的，其包括用于将光投射到被感测物体上的发光元件，以及 偏振光束分离器，从物体反射的光（或透过或散射于物体的光）入射。 来自偏振分束器的反射光被第一光接收元件接收，并且来自偏振分束器的透射光被第二光接收元件接收。 基于S / P，SP，S-kP或（SP）/（S + P）的值进行上述判别，其中S和P表示来自第一和第二光接收元件的光接收信号 ，k是常数。