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公开(公告)号：US12080509B2
公开(公告)日：2024-09-03
申请号：US18616914
申请日：2024-03-26
Applicant: CANON ANELVA CORPORATION
Inventor： Yoichi Ando
CPC classification number: H01J35/30 , H01J35/153 , H05G1/32
Abstract: An X-ray generating apparatus includes an X-ray generating tube including an electron gun and a target configured to generate X-rays upon receiving an electron beam emitted from the electron gun, a deflector configured to deflect the electron beam, a driving circuit configured to apply an accelerating voltage between a cathode of the electron gun and the target, and an adjuster configured to adjust deflection of the electron beam by the deflector in accordance with the accelerating voltage or an amount of change in the accelerating voltage so as to reduce a change in incident position of the electron beam onto the target due to a change in the accelerating voltage.
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公开(公告)号：US11823860B1
公开(公告)日：2023-11-21
申请号：US18350953
申请日：2023-07-12
Applicant: CANON ANELVA CORPORATION
Inventor： Yoichi Ando
CPC classification number: H01J35/08 , H01J35/153 , H01J2235/085
Abstract: An X-ray generating apparatus includes an electron gun, a target configured to generate X-rays by being irradiated with an electron beam emitted from the electron gun, and a controller configured to control a first mode for thinning the target by irradiating the target with an electron beam with a current adjusted within a first current range and a second mode for generating X-rays by irradiating the target with an electron beam with a current adjusted within a second current range. The first current range has a lower limit larger than an upper limit of the second current range.
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公开(公告)号：US11244801B2
公开(公告)日：2022-02-08
申请号：US17211079
申请日：2021-03-24
Applicant: CANON ANELVA CORPORATION
Inventor： Kazuya Tsujino , Yoichi Ando
Abstract: An X-ray generation device includes a cathode including an electron source generating an electron beam, an anode including a target to transmit an X-ray generated by collision of the electron beam, and a convergence electrode converging the electron beam toward the target. The target has a first region having a locally small thickness and a second region having a larger thickness than the first region. The X-ray generation device further includes a deflection unit to switch an incident position of the electron beam between the first region and the second region. The deflection unit has an adjustment mode to adjust an X-ray focal spot diameter and an X-ray generation mode to generate an X-ray, the electron beam is caused to enter the first region in the adjustment mode, and the electron beam is caused to enter the second region in the X-ray generation mode.
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公开(公告)号：US12106927B2
公开(公告)日：2024-10-01
申请号：US18509608
申请日：2023-11-15
Applicant: CANON ANELVA CORPORATION
Inventor： Yoichi Ando
IPC: H01J35/14 , H01J35/08 , H01J35/16 , H01J35/24 , G01N23/046
CPC classification number: H01J35/153 , H01J35/116 , H01J35/16 , H01J35/24 , G01N23/046 , H01J35/112
Abstract: An X-ray imaging apparatus includes an X-ray generation apparatus including an X-ray generation tube having an electron gun and a target configured to receive an electron beam from the electron gun to generate X-rays, a support structure supporting the tube, and a deflector configured to deflect the electron beam, an X-ray detector configured to detect the X-rays from the X-ray generation apparatus, and a control apparatus configured to control the X-ray generation apparatus. The support structure supports the tube to permit at least the target to be pivoted in a state in which the deflector is fixed, and the control apparatus determines, based on use amount of the X-ray generation apparatus and/or change of the X-rays generated by the X-ray generation apparatus, whether it is necessary to pivot the target.
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公开(公告)号：US10433410B2
公开(公告)日：2019-10-01
申请号：US16170274
申请日：2018-10-25
Applicant: CANON ANELVA CORPORATION
Inventor： Yoichi Ando
Abstract: An X-ray generation apparatus includes an X-ray tube; a drive circuit that drives the X-ray tube; a voltage generation circuit that generates an electron acceleration voltage applied to the X-ray tube; and a control unit that communicates with the drive circuit, and at least the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil. At least a part of a path connecting the drive circuit and the control unit is formed of an optical fiber cable arranged inside the storage container, and the optical fiber cable has electric field mitigation means for suppressing an electric field occurring due to a potential difference between the drive circuit and the control unit from locally concentrating along a longitudinal direction of the optical fiber cable.
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Patent Agency Ranking
公开(公告)号：US20190069384A1
公开(公告)日：2019-02-28
申请号：US16170274
申请日：2018-10-25
Applicant: CANON ANELVA CORPORATION
Inventor： Yoichi Ando
Abstract: An X-ray generation apparatus includes an X-ray tube; a drive circuit that drives the X-ray tube; a voltage generation circuit that generates an electron acceleration voltage applied to the X-ray tube; and a control unit that communicates with the drive circuit, and at least the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil. At least a part of a path connecting the drive circuit and the control unit is formed of an optical fiber cable arranged inside the storage container, and the optical fiber cable has electric field mitigation means for suppressing an electric field occurring due to a potential difference between the drive circuit and the control unit from locally concentrating along a longitudinal direction of the optical fiber cable.
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公开(公告)号：US20180242439A1
公开(公告)日：2018-08-23
申请号：US15959372
申请日：2018-04-23
Applicant: CANON ANELVA CORPORATION
Inventor： Junya Kawase , Yoichi Ando
Abstract: An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.
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公开(公告)号：US09980357B1
公开(公告)日：2018-05-22
申请号：US15797212
申请日：2017-10-30
Applicant: CANON ANELVA CORPORATION
Inventor： Junya Kawase , Yoichi Ando
Abstract: An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.
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公开(公告)号：US10720299B1
公开(公告)日：2020-07-21
申请号：US16449968
申请日：2019-06-24
Applicant: Canon Anelva Corporation
Inventor： Yoichi Ando
Abstract: An X-ray generating tube includes an insulating tube having a first open end and a second open end, a cathode including an electron emission source and arranged to close the first open end of the insulating tube, an anode including a target that generates an X-ray upon collision with electron from the electron emission source and arranged to close the second open end of the insulating tube, and a tubular electrical conductive member extending from the anode in an inner space of the insulating tube. The insulating tube includes a tubular rib at a position spaced apart from the first open end and spaced apart from the second open end, and the tubular rib is arranged in a radial direction when viewed from an end of the tubular electrical conductive member on a side of the cathode.
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公开(公告)号：US20180139828A1
公开(公告)日：2018-05-17
申请号：US15797212
申请日：2017-10-30
Applicant: CANON ANELVA CORPORATION
Inventor： Junya Kawase , Yoichi Ando
IPC: H05G1/32
Abstract: An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.
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