Photoarray, particularly for combining sampled brightness sensing with asynchronous detection of time-dependent image data

    公开(公告)号:US09631974B2

    公开(公告)日:2017-04-25

    申请号:US14366128

    申请日:2012-12-19

    Abstract: The invention relates to a photoarray (1), comprising: a plurality of cells (10), wherein each of said cells (10) comprises a means (20)that is configured to generate a photocurrent (I) being proportional to the intensity (L) of the light impinging on the respective cell (10), and wherein each of said cells (10) comprises a change detection circuit (100) connected to the respective means (20) for generating the photocurrent (I), which change detection circuit (100) is configured to generate an output signal merely in case a change event occurs at which said intensity (L) changes by a threshold amount (T, T′) since the preceding change event from the respective cell (10). According to the invention said means (20) for generating said photocurrent (I) is additionally also used to estimate the magnitude of the said photocurrent (I) being a measure of the brightness of the light at the respective cell (10).

    LOAD DRIVING APPARATUS ADAPTED TO DRIVE OUTDOOR DISPLAY
    35.
    发明申请
    LOAD DRIVING APPARATUS ADAPTED TO DRIVE OUTDOOR DISPLAY 审中-公开
    负载驱动装置适用于驱动器室外显示器

    公开(公告)号:US20160111064A1

    公开(公告)日:2016-04-21

    申请号:US14809264

    申请日:2015-07-26

    Abstract: A load driving apparatus adapted to drive an outdoor display is provided. The load driving apparatus includes a weather sensing circuit and a display driver. The weather sensing circuit is configured to sense a weather condition corresponding to an installation place of the outdoor display, and accordingly provides a sensing voltage signal varied along with the weather condition. The display driver is coupled between the weather sensing circuit and the outdoor display, and is configured to drive the outdoor display for displaying in response to the sensing voltage signal. When the weather condition is a cloudy day, the sensing voltage signal is linearly varied within a predetermined voltage range, and then the display brightness of the outdoor display is linearly varied between a maximum brightness and a minimum brightness.

    Abstract translation: 提供适于驱动室外显示器的负载驱动装置。 负载驱动装置包括气象检测电路和显示驱动器。 天气感测电路被配置为感测与室外显示器的安装位置相对应的天气状况,并且因此提供随着天气条件而变化的感测电压信号。 显示驱动器耦合在气象感测电路和室外显示器之间,并且被配置为驱动室外显示器以响应感测电压信号进行显示。 当天气条件是阴天时,感测电压信号在预定电压范围内线性变化,然后室外显示器的显示亮度在最大亮度和最小亮度之间线性变化。

    Scalable photon number resolving photon detector

    公开(公告)号:US11994426B1

    公开(公告)日:2024-05-28

    申请号:US17098235

    申请日:2020-11-13

    Abstract: A photon counting device includes unit cells, a bias current source coupled to the unit cells, and a waveguide coupled to the unit cells. Each unit cell includes photodetector(s). Each photodetector includes superconducting component(s) and a transistor. The transistor includes a superconducting gate that is coupled in parallel with the photodetector(s), and a channel that is electrically isolated from the superconducting gate. For each unit cell, a photodetector is optically coupled to the waveguide. A superconducting component is configured to transition from the superconducting state to the non-superconducting state in response to a photon being incident upon the superconducting component while the superconducting component receives at least a portion of bias current output from the bias current source. The superconducting gate of the unit cell is configured to transition from the superconducting state to the non-superconducting state in response to the superconducting component transitioning to the non-superconducting state.

    LASER LIGHT SOURCE MODULE AND METHOD OF SPECIFYING FAILURE LASER DIODE

    公开(公告)号:US20190020173A1

    公开(公告)日:2019-01-17

    申请号:US16069716

    申请日:2016-03-29

    Inventor: Koji HASEGAWA

    Abstract: It is an object of the present invention to provide a laser light source module capable of diverting current flowing to a laser diode when the laser diode does not emit light. A laser light source module includes a laser diode, a bypass circuit parallelly connected to the laser diode and diverting current flowing to a laser diode in an on state, a light detection circuit detecting laser light of the laser diode, and the bypass circuit switching circuit switching the bypass circuit to the on state in accordance with a control signal being input thereto, and the bypass circuit switching circuit can switch the bypass circuit to the on state in accordance with a state where the light detection circuit does not detect the laser light.

    Stroboscope with integral optical reflective sensor used as a flash trigger

    公开(公告)号:US10080268B2

    公开(公告)日:2018-09-18

    申请号:US15443952

    申请日:2017-02-27

    Inventor: Alan J Woolfson

    Abstract: A stroboscope with an integral optical reflective sensor, which can be removable or fixed, contains a light emitting source, a light sensitive receiver, a pulse conditioning circuit, a stroboscope circuit, a blanking circuit, and a stroboscope light source. The light emitting source projects a light beam to a reflective target. The reflected light beam from the reflective target is detected by the light sensitive receiver. The pulse conditioning circuit generates a set of electrical pulses coincident with the reflected light beam which are sent to the stroboscope circuit. Depending on the signal received by the stroboscope circuit, the stroboscope light source is triggered. The blanking circuit prevents false triggering of the stroboscope light source by introducing a time delay. The time delay is applied when the stroboscope light source is switched on and for a finite time after the stroboscope light source is switch off.

    MSM PHOTOELECTRIC DETECTION DEVICE, METHOD OF DRIVING THE MSM PHOTOELECTRIC DETECTION DEVICE, AND X-RAY DETECTOR

    公开(公告)号:US20180202861A1

    公开(公告)日:2018-07-19

    申请号:US15819392

    申请日:2017-11-21

    Inventor: Zhanjie Ma

    CPC classification number: G01J1/44 G01J2001/4473 G01T1/24

    Abstract: This disclosure relates to a Metal-Semiconductor-Metal (MSM) photoelectric detection device, a method of driving the MSM photoelectric detection device, and an X-Ray detector. The device comprises: a plurality of detection units each including: at least one first MSM structure, at least one second MSM structure, a first control unit, a second control unit, a third control unit, a threshold comparison unit, and an energy storage unit, wherein the first control unit is used for controlling the output/reset signal terminal to be connected to or disconnected from the first node; the second control unit is used for controlling the first node to be connected to or disconnected from the second MSM structure; the threshold comparison unit is used for outputting an ON control signal or an OFF control signal; the third control signal is used for connecting or disconnecting the first node to or from the second MSM structure under the control of the control signal outputted by the threshold comparison unit; the energy storage unit is used for storing charges. This disclosure is used for manufacturing the MSM photoelectric detection device.

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