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13 条记录 (耗时 0.013 秒)

    MEMS ACTUATOR, MEMS ACTUATOR DRIVE METHOD, AND MEMS ACTUATOR CONTROL PROGRAM
    2.
    发明公开
    MEMS ACTUATOR, MEMS ACTUATOR DRIVE METHOD, AND MEMS ACTUATOR CONTROL PROGRAM 审中-公开

    公开(公告)号：US20230152573A1

    公开(公告)日：2023-05-18

    申请号：US17916821

    申请日：2021-01-27

    申请人： HAMAMATSU PHOTONICS K.K.

    发明人： Takayuki KURASHINA ,  Tomofumi SUZUKI ,  Tatsuya SUGIMOTO ,  Hiroo YAMAMOTO

    IPC分类号： G02B26/08 ,  B81B7/02

    CPC分类号： G02B26/0841 ,  B81B7/02 ,  G02B26/10

    摘要： A MEMS actuator includes: a drive circuit for applying a drive voltage having a time waveform, which periodically repeats rising and falling and includes a period to be a constant voltage after the rising and before the falling, between a fixed comb electrode and a movable comb electrode; and a timing detection circuit that generates a capacitance derivative signal indicating a derivative value of a capacitance between the fixed comb electrode and the movable comb electrode by converting a current signal, which is output from the fixed comb electrode or the movable comb electrode within the period due to a change in the capacitance, into a voltage signal and detects a timing when the capacitance derivative signal reaches a threshold value. The drive circuit controls a relationship between the timing detected by the timing detection circuit and a timing of the falling to be constant.

    SMELL DETECTION DEVICE AND SMELL DETECTION METHOD
    4.
    发明申请
    SMELL DETECTION DEVICE AND SMELL DETECTION METHOD 有权

    公开(公告)号：US20220260519A1

    公开(公告)日：2022-08-18

    申请号：US17627248

    申请日：2020-05-19

    申请人： HAMAMATSU PHOTONICS K.K.

    发明人： Seiichiro MIZUNO ,  Hiroo YAMAMOTO ,  Sho MORITA ,  Toshiki WAKAMORI

    IPC分类号： G01N27/414 ,  G01N33/00

    摘要： A smell detection device includes an ion sensor having a sensitive film and outputting an output signal in accordance with a potential change of the sensitive film, a substance adsorption film disposed on the sensitive film and changing its state by adsorbing a smell substance to be detected to cause the potential change of the sensitive film, and an adjuster acquiring the output signal of the ion sensor and adjusting a drive signal for driving the ion sensor to reduce an offset from a predetermined reference value in the output signal.

    INFRARED DETECTION DEVICE
    6.
    发明申请
    INFRARED DETECTION DEVICE 审中-公开

    公开(公告)号：US20180238733A1

    公开(公告)日：2018-08-23

    申请号：US15550127

    申请日：2015-11-19

    申请人： HAMAMATSU PHOTONICS K.K.

    发明人： Masatoshi ISHIHARA ,  Hiroo YAMAMOTO ,  Yoshiaki OHSHIGE

    IPC分类号： G01J1/04 ,  H01L27/144 ,  H04N5/225

    摘要： The signal processing board includes a plurality of signal processing circuits configured to process signals output from a plurality of pixels of an infrared detecting element. The signal processing board includes an element placement area where the infrared detecting element is placed, and a circuit placement area positioned outside the element placement area to surround the element placement area when viewed from a direction orthogonal to the signal processing board. The signal processing board includes a plurality of insulating layers that are stacked on a surface side opposing the semiconductor substrate. A plurality of signal processing circuits are placed in the circuit placement area. A heat-conducting layer is placed to be positioned on at least one of the insulating layers and in the element placement area, in the signal processing board. The heat-conducting layer has a heat conductivity that is higher than a heat conductivity of the insulating layers.

    DIFFERENTIAL AMPLIFIER, PIXEL CIRCUIT AND SOLID-STATE IMAGING DEVICE
    7.
    发明申请
    DIFFERENTIAL AMPLIFIER, PIXEL CIRCUIT AND SOLID-STATE IMAGING DEVICE 审中-公开

    公开(公告)号：US20200280694A1

    公开(公告)日：2020-09-03

    申请号：US16754239

    申请日：2018-10-03

    申请人： HAMAMATSU PHOTONICS K.K.

    发明人： Sho MORITA ,  Takayuki KURASHINA ,  Hiroo YAMAMOTO

    IPC分类号： H04N5/3745 ,  H03F3/45

    摘要： A pixel circuit includes a differential amplifier. The differential amplifier includes a non-inverting input terminal, an inverting input terminal, and an output terminal. The differential amplifier includes an input differential pair including first and second NMOS transistors, a current mirror pair including PMOS transistors, and a constant current source including a fifth NMOS transistor. A threshold voltage of each of the first and second NMOS transistors is higher than a threshold voltage of the fifth NMOS transistor. Further, the threshold voltage of each of the first and second NMOS transistors is higher than a threshold voltage of another NMOS transistor.