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    • 1. 发明授权
    • Apparatus for optically detecting an extraneous matter on a translucent
shield
    • 用于光学检测半透明屏蔽上的外来物质的装置
    • US4867561A
    • 1989-09-19
    • US87168
    • 1987-08-18
    • Tetsuo FujiiHirohito ShioyaTiaki MizunoTadashi KamadaYasuaki MakinoYoshimi YoshinoSeiichiro Otake
    • Tetsuo FujiiHirohito ShioyaTiaki MizunoTadashi KamadaYasuaki MakinoYoshimi YoshinoSeiichiro Otake
    • B60H1/00B60S1/08
    • B60S1/0822B60H1/00785B60S1/0837G06K9/00791Y10S15/15
    • An apparatus for optically detecting the attachment state of extraneous matters to a translucent shield member. The optically detecting apparatus comprises a light-emitting unit having a plurality of light-emitting elements each emitting a light ray toward the translucent shield member, a photoelectric transducer unit having a plurality of transducer elements each receiving each of the light rays reflected on the translucent shield member, and a data processing unit coupled to the transducer unit. The transducer unit generates detection signals corresponding to the quantities of the received light rays and the data processing unit successively compares the level of each of the detection signals with a predetermined level to produce binary signals in accordance with the results of the comparison so that a binary signal pattern is defined at the respective transducer elements. The data processing unit determines the attachment state of the extraneous matters to the translucent shield member by comparing the defined binary signal pattern with a reference pattern.
    • 一种用于光学地检测外来物质到半透明屏蔽构件的附着状态的装置。 光学检测装置包括具有多个发光元件的发光单元,每个发光元件朝向半透明屏蔽构件发射光线;光电变换器单元,具有多个换能器元件,每个换能器元件接收在半透明屏蔽构件上反射的每个光线 屏蔽构件和耦合到换能器单元的数据处理单元。 换能器单元产生对应于接收光线的量的检测信号,并且数据处理单元根据比较结果将每个检测信号的电平与预定电平连续地进行比较,以产生二进制信号,使得二进制 在相应的换能器元件处限定信号图案。 数据处理单元通过将定义的二进制信号模式与参考模式进行比较来确定外部物质对半透明屏蔽构件的附着状态。