公开(公告)号：US12078767B2

公开(公告)日：2024-09-03

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 ,  G01T1/208

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.

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.

公开(公告)号：US11796692B2

公开(公告)日：2023-10-24

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

IPC: G01T1/24 ,  H04N25/65 ,  H04N25/74 ,  H04N25/75 ,  H04N25/767 ,  H04N25/772 ,  H04N25/778 ,  G01T1/208

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.

公开(公告)号：US11215717B2

公开(公告)日：2022-01-04

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

IPC: G01T1/24 ,  H04N5/374 ,  H04N5/376 ,  H04N5/363 ,  H04N5/3745 ,  H04N5/378 ,  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.

公开(公告)号：US11921245B2

公开(公告)日：2024-03-05

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 ,  G01T1/208 ,  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.

公开(公告)号：US11835667B2

公开(公告)日：2023-12-05

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

IPC: G01T1/24 ,  H04N25/65 ,  H04N25/74 ,  H04N25/75 ,  H04N25/767 ,  H04N25/772 ,  H04N25/778 ,  G01T1/208

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.

公开(公告)号：US11656374B2

公开(公告)日：2023-05-23

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

IPC: G01T1/24 ,  H04N5/374 ,  H04N5/3745 ,  H01L27/146 ,  G01J1/02 ,  H04N5/376 ,  H04N5/363 ,  H04N5/378 ,  G01T1/208

CPC classification number: G01T1/247 ,  H04N5/363 ,  H04N5/376 ,  H04N5/378 ,  H04N5/3742 ,  H04N5/37455 ,  H04N5/37457 ,  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.

公开(公告)号：US11204432B2

公开(公告)日：2021-12-21

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: G01T1/24 ,  H04N5/3745 ,  H04N5/374 ,  H04N5/376 ,  H04N5/363 ,  H04N5/378 ,  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.