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    Photon Counter with Pile-Up Rejection
    24.
    发明申请
    Photon Counter with Pile-Up Rejection 审中-公开

    公开(公告)号：US20170205284A1

    公开(公告)日：2017-07-20

    申请号：US15408488

    申请日：2017-01-18

    Applicant: Brookhaven Science Associates, LLC

    Inventor： Gianluigi De Geronimo

    IPC: G01J1/44

    CPC classification number: G01J1/44 ,  G01J2001/442

    Abstract: Technologies are described for methods and systems effective to detect photon receiving events. A first comparator may compare a magnitude of a photon signal to a first threshold voltage to produce a first output. A second comparator may compare the magnitude of the photon signal to a second threshold voltage to produce a second output. A counter control circuit may increment a second counter in response to a determination that the magnitude of a first peak of the photon signal exceeds and then falls below the second threshold voltage. The counter control circuit may prevent a third counter from incrementing in response to a second peak of the photon signal. The counter control circuit may increment the first counter in response to the magnitude of the signal exceeding and then falling below the first threshold voltage. The first counter may be associated with a number of photon receiving events detected.

    MEASUREMENT SYSTEM OF REAL-TIME SPATIALLY-RESOLVED SPECTRUM AND TIME-RESOLVED SPECTRUM AND MEASUREMENT MODULE THEREOF
    26.
    发明申请
    MEASUREMENT SYSTEM OF REAL-TIME SPATIALLY-RESOLVED SPECTRUM AND TIME-RESOLVED SPECTRUM AND MEASUREMENT MODULE THEREOF 审中-公开
    实时空间分辨率和时间分辨率的测量系统及其测量模块

    公开(公告)号：US20170016769A1

    公开(公告)日：2017-01-19

    申请号：US14825252

    申请日：2015-08-13

    Applicant: HC PHOTONICS CORP.

    Inventor： Ming-Hsien CHOU ,  Jian-Long XIAO ,  Ya-Wen CHUANG ,  Jyh-Rou SZE ,  Po-Jui CHEN ,  Chun-Fu LIN ,  Long-Jeng LEE ,  Chun-Li CHANG ,  Chi Hung HUANG ,  Da-Ren LIU

    IPC: G01J3/44 ,  G01N21/64

    CPC classification number: G01J3/4406 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0237 ,  G01J3/06 ,  G01J3/2823 ,  G01J2001/442 ,  G01J2003/063 ,  G01N21/6408 ,  G01N21/6456 ,  G01N2021/6421 ,  G01N2201/0697 ,  G01N2201/10

    Abstract: The present invention provides a measurement system of real-time spatially-resolved spectrum and time-resolved spectrum and a measurement module thereof. The measurement system includes an excitation light and a measurement module. The excitation light excites a fluorescent sample and the measurement module receives and analyzes fluorescence emitted by the fluorescent sample. The measurement module includes a single-photon linear scanner and a linear CCD spectrometer. The single-photon linear scanner selectively intercepts a light beam component of a multi-wavelength light beam that has a predetermined wavelength to generate a single-wavelength time-resolved signal, wherein the multi-wavelength light beam is generated by splitting the fluorescence. The linear CCD spectrometer receives the multi-wavelength light beam and generates a spatially-resolved full-spectrum fluorescence signal. With the implementation of the present invention, the spatially-resolved full-spectrum fluorescence signal and the single-wavelength time-resolved signal can be observed at the same time. Thus, the facility of a fluorescence spectrometer is improved.

    Abstract translation: 本发明提供实时空间分辨光谱和时间分辨光谱的测量系统及其测量模块。 测量系统包括激发光和测量模块。 激发光激发荧光样品，测量模块接收和分析由荧光样品发出的荧光。 测量模块包括单光子线性扫描仪和线性CCD光谱仪。 单光子线性扫描器选择性地截取具有预定波长的多波长光束的光束分量以产生单波长时间分辨信号，其中通过分离荧光产生多波长光束。 线性CCD光谱仪接收多波长光束并产生空间分辨全谱荧光信号。 通过本发明的实现，可以同时观察空间分辨全谱荧光信号和单波长时间分辨信号。 因此，提高了荧光光谱仪的设备。

    SYSTEMS AND METHODS FOR SORTING AND SUMMING SIGNALS FROM AN IMAGING DETECTOR
    27.
    发明申请
    SYSTEMS AND METHODS FOR SORTING AND SUMMING SIGNALS FROM AN IMAGING DETECTOR 有权
    用于从成像检测器分类和收集信号的系统和方法

    公开(公告)号：US20160169737A1

    公开(公告)日：2016-06-16

    申请号：US14569002

    申请日：2014-12-12

    Applicant: General Electric Company

    Inventor： Jean-Paul Bouhnik ,  Yaron Hefetz

    IPC: G01J1/42

    CPC classification number: G01J1/4228 ,  G01J2001/442 ,  G01T1/164 ,  G01T1/1647

    Abstract: A system includes a detector and a main processing unit having an event processing module. The detector includes pixels to detect an event corresponding to photon absorption. The event processing module is configured to read event information for each event detected by each pixel of the detector in order of receipt from the detector and to compare an energy level value in the event information for each event to a predetermined range of energy level values. An event is counted when the energy level value is within the predetermined range of energy level values. For each event having an energy level below the predetermined range, the energy level value for a next consecutive event in the received event information is read and a combined energy level value of the event and the next consecutive event is determined as well as the pixel locations of the event and the next consecutive event. The combined energy level is counted as a single event when the combined energy level value is within a predetermined range of energy level values and when the pixel location for the event is near a pixel location for the next consecutive event. At least one pixel location is assigned to the single event.

    Abstract translation: 一种系统包括检测器和具有事件处理模块的主处理单元。 检测器包括用于检测与光子吸收相对应的事件的像素。 事件处理模块被配置为从检测器接收的顺序读取由检测器的每个像素检测到的每个事件的事件信息，并且将每个事件的事件信息中的能级值与预定的能级值范围进行比较。 当能量值在能级值的预定范围内时，计数事件。 对于具有低于预定范围的能级的每个事件，读取接收到的事件信息中的下一个连续事件的能级值，并确定事件和下一个连续事件的组合能级值以及像素位置 的事件和下一个连续的事件。 当组合能级值在能量水平值的预定范围内并且当事件的像素位置接近用于下一个连续事件的像素位置时，组合能级被计数为单个事件。 至少一个像素位置被分配给单个事件。

    Single Photon-Counting Imaging System and Method Thereof
    28.
    发明申请
    Single Photon-Counting Imaging System and Method Thereof 有权
    单光子计数成像系统及其方法

    公开(公告)号：US20130341487A1

    公开(公告)日：2013-12-26

    申请号：US14000421

    申请日：2012-04-23

    Applicant: Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

    Inventor： Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

    IPC: G01J1/44

    CPC classification number: G01J1/44 ,  G01J1/0414 ,  G01J1/42 ,  G01J2001/442

    Abstract: The invention relates to a single-photon counting imaging system and a single-photon counting imaging method. The system comprises a optical filter, a first lens, a digital micro-mirror device (DMD) control system, a second lens, a single-photon counter and a data processing unit, where the DMD together with the first lens and the second lens are used for converting two-dimensional image data into a one-dimensional sequence to complete sampling of measured signals; the ultra-weak light is filtered by the optical filter, after which the ultra-weak light image onto the DMD through the first lens, and the DMD control system controls the probability of the photons reflected to the second lens and the second lens controls the focusing of the photons; and the data processing unit together with the single-photon counter to complete sparse reconstruction, and the data processing unit converts the number of photons counted by the single-photon counter within a certain period of time into the probability of detected photon counts, as the measured value, and a photon density image is reconstructed by adopting an optimization algorithm based on the measurement matrix on the DMD and the measured value, thereby solving out the two-dimensional image.

    Abstract translation: 本发明涉及单光子计数成像系统和单光子计数成像方法。 该系统包括滤光器，第一透镜，数字微镜装置（DMD）控制系统，第二透镜，单光子计数器和数据处理单元，其中DMD与第一透镜和第二透镜 用于将二维图像数据转换为一维序列以完成测量信号的采样; 超弱光被滤光器滤光，之后通过第一透镜将超弱光图像输送到DMD上，并且DMD控制系统控制反射到第二透镜的光子的概率，而第二透镜控制第二透镜 聚焦光子; 和数据处理单元与单光子计数器一起完成稀疏重建，数据处理单元将在一定时间段内由单光子计数器计数的光子数转换为检测到的光子计数的概率，如 通过采用基于DMD测量矩阵的优化算法和测量值来重构光子密度图像，从而求出二维图像。

    SINGLE PHOTON DETECTOR IN THE NEAR INFRARED USING AN INGAAS/INP AVALANCHE PHOTODIODE OPERATED WITH A BIPOLAR RECTANGULAR GATING SIGNAL
    29.
    发明申请
    SINGLE PHOTON DETECTOR IN THE NEAR INFRARED USING AN INGAAS/INP AVALANCHE PHOTODIODE OPERATED WITH A BIPOLAR RECTANGULAR GATING SIGNAL 有权
    单光子检测器在使用INGAAS / INP AVALANCHE光电接近红外线的情况下使用双极矩形加注信号

    公开(公告)号：US20130221221A1

    公开(公告)日：2013-08-29

    申请号：US13881274

    申请日：2011-06-28

    Applicant: Abdessattar Bouzid ,  Sung Wook Moon ,  Dong Hoon Yi ,  Se Min Kim

    Inventor： Abdessattar Bouzid ,  Sung Wook Moon ,  Dong Hoon Yi ,  Se Min Kim

    IPC: H01L31/09

    CPC classification number: H01L31/09 ,  G01J1/44 ,  G01J2001/442 ,  G01J2001/4466

    Abstract: The present invention relates to a single photon detector (SPD) at telecom wavelength of 1.55 μm based on InGaAs/InP avalanche photodiode (APD). In order to operate the SPD at a low after-pulse noise, a DC bias voltage lower than the breakdown voltage is applied to an InGaAs/InP APD. A bipolar rectangular gating signal is superimposed with the DC bias voltage and applied to the APD so as to exceed the breakdown voltage during the gate-on time of each period of the gate signal. The use of the bipolar rectangular gating signal enabling us to operate the APD well below the breakdown voltage during the gate-off time, thereby make the release of the trapped charge carriers faster and then reduces the after-pulse noise. As a result, it permits to increase the repetition rate of the SPD.

    Abstract translation: 本发明涉及基于InGaAs / InP雪崩光电二极管（APD）的电信波长为1.55mum的单光子检测器（SPD）。 为了在低后脉冲噪声下操作SPD，将低于击穿电压的DC偏置电压施加到InGaAs / InP APD。 双极矩形门控信号与直流偏置电压叠加并施加到APD，以便在栅极信号的每个周期的栅极导通时间内超过击穿电压。 使用双极矩形门控信号，使得我们能够在栅极截止时间内将APD远低于击穿电压，从而使捕获的电荷载体更快地释放，然后降低脉冲后噪声。 结果，它允许增加SPD的重复率。

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