Narrow band optical radiation sensor using pyroelectric material
    2.
    发明授权
    Narrow band optical radiation sensor using pyroelectric material 失效
    使用热电材料的窄带光辐射传感器

    公开(公告)号:US5923029A

    公开(公告)日:1999-07-13

    申请号:US935006

    申请日:1997-09-22

    IPC分类号: G01J5/34 G01J5/62 G01J5/12

    CPC分类号: G01J5/34 G01J5/62

    摘要: A pair of interleaved finger-like electrodes are positioned over a pyro-electric sheet of polyvinylidine fluoride and a pair of coatings are formed upon the electrodes having different optical reflectance, and as a result, a light beam energy absorption differential will be produced between the coatings and the resulting change in temperature in the sheet material under the electrodes will cause a voltage to be generated. A differential amplifier is connected across the electrodes to sense this voltage, indicative of the detection of an incoming laser light beam. A light chopper is positioned to interrupt the light beam directed at a portion of the pyro-electric sheet.

    摘要翻译: 一对交错的指状电极位于聚偏氟乙烯的热电片上方,并且在具有不同光学反射率的电极上形成一对涂层,结果将产生光束能量吸收差异 涂层和电极下的片状材料的温度变化将导致产生电压。 差分放大器跨越电极连接以感测该电压,表示检测入射激光束。 光斩波器被定位成中断指向热电片的一部分的光束。