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公开(公告)号：US10205296B2
公开(公告)日：2019-02-12
申请号：US15616270
申请日：2017-06-07
Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION , HAMAMATSU PHOTONICS K.K. , NTT Advanced Technology Corporation
Inventor： Seiji Toyoda , Yuzo Sasaki , Takashi Sakamoto , Joji Yamaguchi , Tadashi Sakamoto , Koei Yamamoto , Masatoshi Fujimoto , Mahiro Yamada , Shogo Yagi , Yukihiko Ushiyama , Eiichi Sugai , Koji Yoneyama , Kazuo Fujiura
Abstract: Provided is a swept light source including one end surface coupled to a wavelength filter constituted of a diffraction grating and an end mirror via a light deflector and another end surface including a gain medium facing an output coupling mirror and which configures a laser cavity between the end mirror and the output coupling mirror, wherein a drive voltage having an AC voltage on which a DC bias voltage is superimposed is output from a control voltage source of the light deflector to an electrode pair of an electro-optic crystal, light is radiated from a light emitter to the electro-optic crystal, and incident light from the gain medium incident along an optical axis perpendicular to a direction of an electric field formed by the control voltage is deflected in a direction parallel to the electric field, so that wavelength sweeping is performed.
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公开(公告)号：US20170358899A1
公开(公告)日：2017-12-14
申请号：US15616270
申请日：2017-06-07
Applicant: Nippon Telegraph and Telephone Corporation , Hamamatsu Photonics K.K. , NTT Advanced Technology Corporation
Inventor： Seiji TOYODA , Yuzo Sasaki , Takashi Sakamoto , Joji Yamaguchi , Tadashi Sakamoto , Koei Yamamoto , Masatoshi Fujimoto , Mahiro Yamada , Shogo Yagi , Yukihiko Ushiyama , Eiichi Sugai , Koji Yoneyama , Kazuo Fujiura
CPC classification number: H01S3/1075 , G01B9/02004 , G01B9/02091 , H01S3/08009 , H01S3/107 , H01S5/06216 , H01S5/141 , H01S5/143
Abstract: Provided is a swept light source including one end surface coupled to a wavelength filter constituted of a diffraction grating and an end mirror via a light deflector and another end surface including a gain medium facing an output coupling mirror and which configures a laser cavity between the end mirror and the output coupling mirror, wherein a drive voltage having an AC voltage on which a DC bias voltage is superimposed is output from a control voltage source of the light deflector to an electrode pair of an electro-optic crystal, light is radiated from a light emitter to the electro-optic crystal, and incident light from the gain medium incident along an optical axis perpendicular to a direction of an electric field formed by the control voltage is deflected in a direction parallel to the electric field, so that wavelength sweeping is performed.
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公开(公告)号：US08791538B2
公开(公告)日：2014-07-29
申请号：US13655907
申请日：2012-10-19
Applicant: Hamamatsu Photonics K.K.
Inventor： Koei Yamamoto , Terumasa Nagano , Kazuhisa Yamamura , Kenichi Sato , Ryutaro Tsuchiya
IPC: H01L31/107 , H01L31/00
CPC classification number: H01L27/14643 , H01L27/1443 , H01L27/1446 , H01L27/14605 , H01L27/14607 , H01L27/14609 , H01L27/14636 , H01L28/24 , H01L31/02027 , H01L31/022416 , H01L31/022466 , H01L31/107
Abstract: A light receiving region includes a plurality of light detecting sections 10. The light detecting sections 10 has a second contact electrode 4A. The second contact electrode 4A is arranged at a position overlapping a first contact electrode 3A, so as to contact the first contact electrode. Further, a resistive layer 4B is continued to the second contact electrode 4A.
Abstract translation: 光接收区域包括多个光检测部分10.光检测部分10具有第二接触电极4A。 第二接触电极4A配置在与第一接触电极3A重叠的位置，以与第一接触电极接触。 此外，电阻层4B继续到第二接触电极4A。
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公开(公告)号：US11322635B2
公开(公告)日：2022-05-03
申请号：US16346929
申请日：2017-11-09
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takashi Baba , Shunsuke Adachi , Shigeyuki Nakamura , Terumasa Nagano , Koei Yamamoto
IPC: H01L31/107 , H01L27/144 , H01L31/02 , G01J1/44
Abstract: A photodetecting device includes a semiconductor substrate including a one-dimensionally distributed plurality of pixels. The photodetecting device includes, for each pixel, a plurality of avalanche photodiodes arranged to operate in Geiger mode, a plurality of quenching resistors electrically connected in series with the respective avalanche photodiodes, and a signal processing unit arranged to process output signals from the plurality of avalanche photodiodes. Light receiving regions of the plurality of avalanche photodiodes are two-dimensionally distributed for each pixel. Each signal processing unit includes a gate grounded circuit and a current mirror circuit electrically connected to the gate grounded circuit. The gate grounded circuit is electrically connected to the plurality of avalanche photodiodes of the corresponding pixel via the plurality of quenching resistors. The current minor circuit is arranged to output a signal corresponding to output signals from the plurality of avalanche photodiodes.
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公开(公告)号：US09823359B2
公开(公告)日：2017-11-21
申请号：US14782923
申请日：2014-01-24
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koei Yamamoto , Toshihiro Oikawa , Hiroki Suzuki , Yuichi Miyamoto , Naoto Sakurai
CPC classification number: G01T1/2014 , G01T1/2018 , G02B5/04 , G02B26/0833 , G03B42/023 , G03B42/08 , G21K4/00
Abstract: A radiation image detecting device includes a photodetecting element that detects fluorescence light, and a prism that is disposed on an optical path of excitation light traveling toward an imaging plate and between the photodetecting element and the imaging plate. The prism includes, as surface thereof, a side face that is opposed to the imaging plate, and a side face and a side face that are inclined relative to the side face. The prism is disposed so that the excitation light incident through the side face propagates inside and is output from the side face and so that reflection from the imaging plate incident through the side face propagates inside and is output from the side face. The photodetecting element is disposed so as to be opposed to a region different from a region where the reflection from the imaging plate is output, in the surface of the prism.
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Patent Agency Ranking
公开(公告)号：US12247870B2
公开(公告)日：2025-03-11
申请号：US18223277
申请日：2023-07-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takuya Fujita , Yusei Tamura , Kenji Makino , Takashi Baba , Koei Yamamoto
IPC: G01J1/44 , H01L27/144 , H01L31/02 , H01L31/107
Abstract: A photodetector device includes an avalanche photodiode array substrate formed from compound semiconductor. A plurality of avalanche photodiodes arranged to operate in a Geiger mode are two-dimensionally arranged on the avalanche photodiode array substrate. A circuit substrate includes a plurality of output units which are connected to each other in parallel to form at least one channel. Each of the output units includes a passive quenching element and a capacitative element. The passive quenching element is connected in series to at least one of the plurality of avalanche photodiodes. The capacitative element is connected in series to at least one of the avalanche photodiodes and is connected in parallel to the passive quenching element.
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公开(公告)号：US11860032B2
公开(公告)日：2024-01-02
申请号：US17384915
申请日：2021-07-26
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takuya Fujita , Yusei Tamura , Kenji Makino , Takashi Baba , Koei Yamamoto
IPC: H01L31/02 , G01J1/44 , H01L27/144 , H01L31/107
CPC classification number: G01J1/44 , H01L27/1446 , H01L31/02027 , H01L31/107 , G01J2001/442 , G01J2001/4466
Abstract: A photodetector device includes an avalanche photodiode array substrate formed from compound semiconductor. A plurality of avalanche photodiodes arranged to operate in a Geiger mode are two-dimensionally arranged on the avalanche photodiode array substrate. A circuit substrate includes a plurality of output units which are connected to each other in parallel to form at least one channel. Each of the output units includes a passive quenching element and a capacitative element. The passive quenching element is connected in series to at least one of the plurality of avalanche photodiodes. The capacitative element is connected in series to at least one of the avalanche photodiodes and is connected in parallel to the passive quenching element.
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公开(公告)号：US09620662B2
公开(公告)日：2017-04-11
申请号：US14855968
申请日：2015-09-16
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koei Yamamoto , Kenzo Hayatsu , Terumasa Nagano , Yuki Okuwa , Ryuta Yamada
IPC: H01L31/107 , H01L31/028 , H01L27/146
CPC classification number: H01L31/107 , H01L27/14603 , H01L27/14618 , H01L27/14625 , H01L27/14636 , H01L27/14643 , H01L31/028 , H01L2224/48091 , H01L2224/48227 , H01L2924/16195 , H01L2924/00014
Abstract: An ultraviolet sensor includes a silicon photodiode array having a plurality of first pixel regions and a plurality of second pixel regions. A filter film is disposed on each of the first pixel regions so as to cover each first pixel region, except on each second pixel region. The filter film lowers transmittance in a detection target wavelength range in the ultraviolet region. Each of each first pixel region and each second pixel region includes at least one pixel having an avalanche photodiode to operate in Geiger mode, and a quenching resistor connected in series to the avalanche photodiode. Each of the quenching resistors in the plurality of first pixel regions is connected through a first signal line to a first output terminal. Each of the quenching resistors in the plurality of second pixel regions is connected through a second signal line to a second output terminal.
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公开(公告)号：US10816681B2
公开(公告)日：2020-10-27
申请号：US15773618
申请日：2016-10-28
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Keiji Abe , Toshiyuki Izawa , Koei Yamamoto
Abstract: A radiation detector includes a substrate including a charge collection electrode, a radiation absorption layer disposed on one side with respect to the substrate and including perovskite structure particles and a binder resin; and a voltage application electrode disposed on the one side with respect to the radiation absorption layer, a bias voltage being applied to the voltage application electrode so that a potential difference is generated between the voltage application electrode and the charge collection electrode.
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公开(公告)号：US09625587B2
公开(公告)日：2017-04-18
申请号：US14900710
申请日：2014-06-10
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koei Yamamoto , Toshihiro Oikawa , Hiroki Suzuki , Yuichi Miyamoto , Naoto Sakurai
CPC classification number: G01T1/2014 , A61B6/42 , A61B6/54 , G01T1/208 , G03B42/02
Abstract: A radiological image reading device includes a MEMS mirror that scan a recording medium on which a radiological image is recorded with excitation light; a light detecting element that includes a plurality of channels, each channel including a photodiode array, and detects light emitted from an irradiation position of the excitation light on the recording medium; a MEMS mirror driving circuit that determines as a light detection channel to detect the light, a channel corresponding to the irradiation position of the excitation light, out of the plurality of channels; and a reading circuit that reads the detection result of the light from the channel determined by the MEMS mirror driving circuit.
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