Self-balancing position sensitive detector

    公开(公告)号:US09812591B2

    公开(公告)日:2017-11-07

    申请号:US15501961

    申请日:2016-06-10

    Abstract: A self-balancing optical position sensitive detector includes a pair of spaced apart, parallel, longitudinally extending doped regions on a first surface on a front side of a substrate 16 of opposite doping type with contact pads on the front side at respective ends of a first doped region of the pair. A voltage source applies a potential difference between the contact pads of the first doped region. On the front side, a contact pad of the second doped region of the pair provides an analog output signal representative of a longitudinal position of a center of gravity of an incident light pattern along the doped regions without external circuitry processing the output signal to obtain a readout of the longitudinal position. A resistive line may directly overly, abut and be in contact with at least a portion of the first doped region. A conductive line may directly overly, abut and be in contact with at least a portion of the second doped region. No backside contact or processing of the substrate is required or employed.

    Optical analog potentiometer
    12.
    发明授权
    Optical analog potentiometer 失效
    光模拟电位器

    公开(公告)号:US6025588A

    公开(公告)日:2000-02-15

    申请号:US157269

    申请日:1998-09-21

    Applicant: Fan-Yi Hsu

    Inventor: Fan-Yi Hsu

    CPC classification number: G01D5/32 G01D5/36 H01L31/164

    Abstract: A potentiometer includes a shaft, a base including a printed circuit board on which are fixedly mounted a light emitter and a light receiver arranged opposite to and spaced from the light emitter, the light emitter being supplied with steady voltage to emit light and provide working voltage to the light receiver, a circular seat formed with an opening and fixedly mounted on an upper end of the shaft, a plastic film arranged on an outer edge of the opening and disposed between the light emitter and the light receiver, the plastic film being provided two end portions which are opaque and an intermediate portion which decreases in transparency from one side to another side thereof, and a cover fixedly mounted on the base to enclose the circular seat, whereby the potentiometer is of high sensitivity, durable in use, low in cost, easily converted from a conventional rheostat and fit for mass production.

    Abstract translation: 电位计包括轴,底座,其中包括印刷电路板,固定地安装有发光体,以及与发光体相对设置并与发光体隔开的光接收器,所述发光体被供给稳定电压以发光并提供工作电压 光接收器,形成有开口并固定安装在轴的上端的圆形座,塑料膜,布置在开口的外边缘并且设置在光发射器和光接收器之间,塑料膜设置 两个不透明的端部和从一侧到另一侧的透明度降低的中间部分,以及固定地安装在基座上以封闭圆形座的盖,由此电位计具有高灵敏度,使用寿命低 成本,易于从传统的变阻器转换并适合批量生产。

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