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    Photo-detector device and a method for biasing a photomultiplier tube having a current source for setting a sequence of voltage follower elements
    2.
    发明授权
    Photo-detector device and a method for biasing a photomultiplier tube having a current source for setting a sequence of voltage follower elements 有权
    光检测器装置和用于偏置具有用于设置电压从动元件序列的电流源的光电倍增管的方法

    公开(公告)号：US08921756B2

    公开(公告)日：2014-12-30

    申请号：US13440843

    申请日：2012-04-05

    Applicant: Michael Heifets ,  Pavel Margulis

    Inventor： Michael Heifets ,  Pavel Margulis

    IPC: H01J40/14 ,  H01J31/50 ,  H01J43/30

    CPC classification number: G01J1/44 ,  G01J2001/4453 ,  H01J43/20

    Abstract: A photo-detector and method for operating same: the photo-detector comprises a photomultiplier tube comprising a plurality of electrodes, each having a photocathode, an anode, a first dynode, intermediate dynodes and a last dynode; and a biasing circuit that comprises a sequence of voltage follower elements, a voltage divider and a current source. The voltage divider is coupled across a high voltage power supply and different dynodes are coupled to different ones of the voltage follower elements, control inputs of which are coupled to different junctions of the voltage divider. The current source is coupled to the voltage divider, to the sequence of the voltage follower elements and to the cathode. The anode is coupled to a load element coupled to a positive pole of the high voltage power supply and arranged to receive an output signal of the anode and convert it to an output signal of the photo-detector.

    Abstract translation: 光电检测器及其操作方法：光电检测器包括一个光电倍增管，该光电倍增管包括多个电极，每个电极具有光电阴极，阳极，第一倍增电极，中间倍增电极和最后一个倍增电极; 以及偏置电路，其包括一系列电压从动元件，分压器和电流源。 分压器跨越高压电源耦合，并且不同的倍增电极耦合到不同的电压跟随器元件，其控制输入耦合到分压器的不同结。 电流源耦合到分压器，连接到电压从动元件和阴极的序列。 阳极耦合到耦合到高电压电源的正极的负载元件，并被布置成接收阳极的输出信号并将其转换成光电检测器的输出信号。

    Systems and methods for biasing light detectors
    4.
    发明授权
    Systems and methods for biasing light detectors 有权

    公开(公告)号：US11921237B2

    公开(公告)日：2024-03-05

    申请号：US17828508

    申请日：2022-05-31

    Applicant: Waymo LLC

    Inventor： Pierre-yves Droz ,  Vadim Gutnik

    IPC: G01S7/4861 ,  G01J1/44 ,  G01J1/46 ,  G01S17/10 ,  G01S17/894

    CPC classification number: G01S7/4861 ,  G01J1/44 ,  G01J1/46 ,  G01J2001/4446 ,  G01J2001/4453 ,  G01S17/10 ,  G01S17/894

    Abstract: An example circuit includes a light detector and a biasing capacitor having (i) a first terminal that applies to the light detector an output voltage that can either bias or debias the light detector and (ii) a second terminal for controlling the output voltage. The circuit includes a first transistor connected to the second terminal of the biasing capacitor and configured to drive the output voltage to a first voltage level above a biasing threshold of the light detector and thereby biasing the light detector. The circuit includes a second transistor connected to the second terminal of the biasing capacitor and configured to drive the output voltage to a second voltage level below the biasing threshold of the light detector and thereby debiasing the light detector. The second voltage is a non-zero voltage that corresponds to a charge level of the biasing capacitor.

    OR pulse combination digital photomultiplier
    5.
    发明授权
    OR pulse combination digital photomultiplier 有权

    公开(公告)号：US11747194B2

    公开(公告)日：2023-09-05

    申请号：US17799804

    申请日：2021-02-11

    Applicant: CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC) ,  UNIVERSIDAD DE SEVILLA

    Inventor： Ion Vornicu ,  Ricardo Carmona Galán ,  Ángel Rodríguez Vázquez

    IPC: G01J1/44

    CPC classification number: G01J1/44 ,  G01J2001/4453 ,  G01J2001/4466

    Abstract: The photomultiplier includes a set of macrocells, each comprising at least two microcells, each being connected to an output node according to an OR diagram, and achieving great energy efficiency upon deactivating each of the microcells when these are activated almost simultaneously, and that otherwise would have been masked by the OR diagram. To this end, each of the microcells comprises an active quenching and recharge circuit; an avalanche diode; a first deactivation transistor with its gate connected to an external processor, and its drain and source associated with the active quenching and recharge circuit; a second deactivation transistor with its gate connected to an external processor, and its source associated with the active quenching and recharge circuit.

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