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1.发明公开公开(公告)号：US20240314470A1
公开(公告)日：2024-09-19
申请号：US18275443
申请日：2021-12-24
IPC分类号： H04N25/773 , G01J1/44 , H04N25/618
CPC分类号： H04N25/773 , G01J1/44 , H04N25/618 , G01J2001/442
摘要： A photon counting device includes: a plurality of pixels each including a photoelectric conversion element and an amplifier amplifying charge to which input light is converted by the photoelectric conversion element and converting the amplified charge to a voltage; an A/D converter converting a voltage output from the amplifier of each of the plurality of pixels to a digital value; a first derivation unit configured to derive a provisional value of photon number in each of the plurality of pixels based on the digital value; and a second derivation unit configured to derive a confirmed value of photon number in a target pixel based on a first probability associated with a photon number distribution and a second probability associated with reading noise.
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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
发明人： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHi
IPC分类号： G01T1/24 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778
CPC分类号： G01T1/247 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778 , G01T1/208
摘要： 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
发明人： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
IPC分类号： G01T1/24 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778
CPC分类号： G01T1/247 , H04N25/65 , H04N25/74 , H04N25/75 , H04N25/767 , H04N25/772 , H04N25/778 , G01T1/208
摘要： 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：US20220066055A1
公开(公告)日：2022-03-03
申请号：US17501398
申请日：2021-10-14
发明人： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
摘要： 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
发明人： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
摘要： 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
发明人： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
IPC分类号： H04N5/378 , H04N5/3745 , H04N5/363
摘要： 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
发明人： Tadashi MARUNO , Eiji TODA , Mao NAKAJIMA , Teruo TAKAHASHI , Takafumi HIGUCHI
摘要： 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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