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公开(公告)号：US20230324570A1
公开(公告)日：2023-10-12
申请号：US18206806
申请日：2023-06-07
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHi
IPC: G01T1/24 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778
CPC classification number: G01T1/247 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778 , G01T1/208
Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltage output from the amplifier of each of the plurality of pixels to a digital value and output the digital value, a correction unit configured to correct the digital value output from the A/D converter so that an influence of a variation in a gain and an offset value among the plurality of pixels is curbed, a calculation unit configured to output a summed value obtained by summing the corrected digital values corresponding to at least two pixels, and a conversion unit configured to convert the summed value output from the calculation unit to a number of photons.
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公开(公告)号：US20230251392A1
公开(公告)日：2023-08-10
申请号：US18133578
申请日：2023-04-12
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
IPC: G01T1/24 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778
CPC classification number: G01T1/247 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778 , G01T1/208
Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltages output from the amplifiers of the plurality of pixels to digital values; and a conversion unit configured to convert the digital value output from the A/D converter to the number of photons by referring to reference data, for each of the plurality of pixels, and the reference data is created based on a gain and an offset value for each of the plurality of pixels.
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3.发明申请公开(公告)号：US20170184514A1
公开(公告)日：2017-06-29
申请号：US15407528
申请日：2017-01-17
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Toshiyasu SUYAMA , Tadashi MARUNO , Toshihide SASAKI , Junichi SONODA , Shinji TAKIHI
CPC classification number: G01N23/04 , G01N23/046 , G01N23/06 , G01N23/083 , G01N23/087 , G01N2223/03 , G01N2223/04 , G01N2223/1016 , G01N2223/306 , G01N2223/33 , G01N2223/3307 , G01N2223/40 , G01N2223/401 , G01V5/0008 , G01V5/0016 , G01V5/0041 , G01V5/005
Abstract: A radiation image acquiring system is provided. An X-ray image acquiring system irradiates X-rays to a subject from an X-ray source, and detects X-rays transmitted through the subject. The X-ray image acquiring system includes a first detector for detecting X-rays that are transmitted through the subject to generate first image data, a second detector arranged in parallel to the first detector with a dead zone region sandwiched therebetween, for detecting X-rays that are transmitted through the subject to generate second image data, and a timing control section for controlling detection timing of the second detector based on a dead zone width of the dead zone region so that first image data to be generated by the first detector and second image data to be generated by the second detector mutually correspond.
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4.发明申请RADIATION DETECTION DEVICE, RADIATION IMAGE ACQUIRING SYSTEM, RADIATION INSPECTION SYSTEM, AND RADIATION DETECTION METHOD 有权辐射检测装置，辐射图像获取系统，辐射检查系统和辐射检测方法公开(公告)号：US20150139387A1
公开(公告)日：2015-05-21
申请号：US14603761
申请日：2015-01-23
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Toshiyasu SUYAMA , Tadashi MARUNO , Toshihide SASAKI , Junichi SONODA , Shinji TAKIHI
CPC classification number: G01N23/046 , G01N23/04 , G01N2223/1016 , G01N2223/306 , G01N2223/3307 , G01V5/0008 , G01V5/0016 , G01V5/0041
Abstract: A radiation image acquiring system is provided. An X-ray image acquiring system irradiates X-rays to a subject from an X-ray source, and detects X-rays transmitted through the subject. The X-ray image acquiring system includes a first detector for detecting X-rays that are transmitted through the subject to generate first image data, a second detector arranged in parallel to the first detector with a dead zone region sandwiched therebetween, for detecting X-rays that are transmitted through the subject to generate second image data, and a timing control section for controlling detection timing of the second detector based on a dead zone width of the dead zone region so that first image data to be generated by the first detector and second image data to be generated by the second detector mutually correspond.
Abstract translation: 提供了一种放射图像获取系统。 X射线图像获取系统从X射线源向被检体照射X射线，并且检测通过被检体传播的X射线。 X射线图像获取系统包括：第一检测器，用于检测通过被摄体透射的X射线以产生第一图像数据;第二检测器，与第一检测器平行布置，其中夹有死区区域，用于检测X射线; 通过对象发送的光线以产生第二图像数据;以及定时控制部分，用于基于死区区域的死区宽度来控制第二检测器的检测定时，使得由第一检测器生成的第一图像数据和 由第二检测器生成的第二图像数据相互对应。
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Patent Agency Ranking
公开(公告)号：US20240393484A1
公开(公告)日：2024-11-28
申请号：US18794569
申请日：2024-08-05
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadashi MARUNO , Eiji Toda , Mao Nakajima , Teruo Takahashi , Takafumi Higuchi
IPC: G01T1/24 , G01T1/208 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778
Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltage output from the amplifier of each of the plurality of pixels to a digital value and output the digital value, a correction unit configured to correct the digital value output from the A/D converter so that an influence of a variation in a gain and an offset value among the plurality of pixels is curbed, a calculation unit configured to output a summed value obtained by summing the corrected digital values corresponding to at least two pixels, and a conversion unit configured to convert the summed value output from the calculation unit to a number of photons.
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公开(公告)号：US20220066055A1
公开(公告)日：2022-03-03
申请号：US17501398
申请日：2021-10-14
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltage output from the amplifier of each of the plurality of pixels to a digital value and output the digital value, a correction unit configured to correct the digital value output from the A/D converter so that an influence of a variation in a gain and an offset value among the plurality of pixels is curbed, a calculation unit configured to output a summed value obtained by summing the corrected digital values corresponding to at least two pixels, and a conversion unit configured to convert the summed value output from the calculation unit to a number of photons.
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公开(公告)号：US20220035056A1
公开(公告)日：2022-02-03
申请号：US17502424
申请日：2021-10-15
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltages output from the amplifiers of the plurality of pixels to digital values; and a conversion unit configured to convert the digital value output from the A/D converter to the number of photons by referring to reference data, for each of the plurality of pixels, and the reference data is created based on a gain and an offset value for each of the plurality of pixels.
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公开(公告)号：US20200374478A1
公开(公告)日：2020-11-26
申请号：US16764066
申请日：2018-06-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
IPC: H04N5/378 , H04N5/3745 , H04N5/363
Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltages output from the amplifiers of the plurality of pixels to digital values; and a conversion unit configured to convert the digital value output from the A/D converter to the number of photons by referring to reference data, for each of the plurality of pixels, and the reference data is created based on a gain and an offset value for each of the plurality of pixels.
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公开(公告)号：US20200371261A1
公开(公告)日：2020-11-26
申请号：US16764053
申请日：2018-06-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
Abstract: A photon counting device includes a plurality of pixels each including a photoelectric conversion element configured to convert input light to charge, and an amplifier configured to amplify the charge converted by the photoelectric conversion element and convert the charge to a voltage, an A/D converter configured to convert the voltage output from the amplifier of each of the plurality of pixels to a digital value and output the digital value, a correction unit configured to correct the digital value output from the A/D converter so that an influence of a variation in a gain and an offset value among the plurality of pixels is curbed, a calculation unit configured to output a summed value obtained by summing the corrected digital values corresponding to at least two pixels, and a conversion unit configured to convert the summed value output from the calculation unit to a number of photons.
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