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公开(公告)号：US20240274392A1
公开(公告)日：2024-08-15
申请号：US18413829
申请日：2024-01-16
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi ISHII , Akimichi SHIMIZU
CPC classification number: H01J35/066 , H01J35/14
Abstract: An X-ray tube includes a housing, a cathode disposed in the housing and configured to release electrons, a target disposed in the housing and configured to generate X-rays upon incidence of the electrons, a first tubular body surrounding the cathode inside the housing, and a getter disposed in a region where a trajectory of the electrons from the cathode to the target is not allowed to be seen in an inner region of the first tubular body.
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公开(公告)号：US20210029808A1
公开(公告)日：2021-01-28
申请号：US17040128
申请日：2019-02-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi ISHII
Abstract: An X-ray generator includes an X-ray tube configured to generate X-rays, an X-ray tube accommodation portion which accommodates at least a part of the X-ray tube and enclosing insulating oil, a second accommodation portion surrounding the X-ray tube accommodation portion when viewed in a tube axis direction of the X-ray tube, a blower fan configured to circulate gas inside a surrounding space defined between the X-ray tube accommodation portion and the second accommodation portion, and an X-ray shielding portion made of a material having a higher X-ray shielding ability than the X-ray tube accommodation portion and the second accommodation portion, and provided on an inner surface of the second accommodation portion.
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公开(公告)号：US20230290604A1
公开(公告)日：2023-09-14
申请号：US18140223
申请日：2023-04-27
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi ISHII , Ginji SUGIURA , Akihito KOBAYASHI
CPC classification number: H01J35/153 , H05G1/025 , H01J2235/1291 , H01J2235/1216 , H01J2235/1245
Abstract: An X-ray module includes; a housing; an electron gun that emits an electron beam inside the housing; a target disposed inside the housing and fixed to the housing, to generate an X-ray when the electron beam is incident on the target; a permanent magnet that is disposed outside the housing and deflects the electron beam by means of a magnetic force; and a heat radiating unit having a higher thermal conductivity than a thermal conductivity of the permanent magnet and thermally connected to the permanent magnet.
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公开(公告)号：US20220238292A1
公开(公告)日：2022-07-28
申请号：US17569686
申请日：2022-01-06
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi ISHII , Ginji SUGIURA , Akihito KOBAYASHI
Abstract: An X-ray module includes a housing; an electron gun that emits an electron beam inside the housing; a target disposed inside the housing and fixed to the housing, to generate an X-ray when the electron beam is incident on the target; and a deflection unit including a permanent magnet and disposed outside the housing, to deflect the electron beam by means of a magnetic force of the permanent magnet. The deflection unit includes a heat insulating member disposed at least between the permanent magnet and the housing. A thermal conductivity of the heat insulating member is lower than a thermal conductivity of the permanent magnet.
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公开(公告)号：US20210029809A1
公开(公告)日：2021-01-28
申请号：US17040140
申请日：2019-02-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi ISHII , Akihito KOBAYASHI
Abstract: An X-ray generator includes an X-ray tube, an X-ray tube accommodation portion, and a power source unit having an internal substrate supplying a voltage to the X-ray tube sealed inside an insulating block. A first space is defined by an upper surface of the insulating block and an inner surface of the X-ray tube accommodation portion. A second space is defined by a recess portion opening to the outside formed on a side surface of the insulating block and a sealing member sealing an opening of the recess portion. A communication hole causing the first space and the second space to communicate with each other is provided in the insulating block. Insulating oil is enclosed in the first space and the second space. A depth of the recess portion is smaller than a width of the recess portion.
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Patent Agency Ranking
公开(公告)号：US20240290568A1
公开(公告)日：2024-08-29
申请号：US18571441
申请日：2022-03-09
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Naonobu SUZUKI , Atsushi ISHII , Ryosuke YABUSHITA , Akimichi SHIMIZU , Naofumi KOSUGI , Ginji SUGIURA
CPC classification number: H01J35/18 , H01J9/24 , H01J2209/264
Abstract: An X-ray tube includes a housing, an electron gun that emits an electron beam inside the housing, a target that generates an X-ray upon an incidence of the electron beam inside the housing, and a window member that seals an opening of the housing and that transmits the X-ray. The window member is formed in a plate shape from a single crystal diamond. A [100] direction of the single crystal diamond is in an intersection relationship with a thickness direction of the window member at an angle of less than 45 degrees.
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公开(公告)号：US20240282545A1
公开(公告)日：2024-08-22
申请号：US18571485
申请日：2022-03-09
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Naonobu SUZUKI , Atsushi ISHII , Ryosuke YABUSHITA , Akimichi SHIMIZU , Naofumi KOSUGI , Ginji SUGIURA
CPC classification number: H01J35/18 , H01J35/153 , H01J35/30
Abstract: An X-ray generation device includes an X-ray tube, and an electron beam adjustment part. The X-ray tube includes a housing, an electron gun, a target, and a window member. When a first defect exists in the target, the electron beam adjustment part adjusts an electron beam such that the first defect is not included in an irradiation region of the electron beam on the target, and when a second defect exists in the window member, the electron beam adjustment part adjusts the electron beam such that the second defect is not included in a projection region of the electron beam on the window member.
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公开(公告)号：US20210100088A1
公开(公告)日：2021-04-01
申请号：US17043833
申请日：2019-02-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi ISHII
IPC: H05G1/06
Abstract: An X-ray generator includes an X-ray tube, an X-ray tube accommodation portion, and a power source unit having an internal substrate supplying a voltage to the X-ray tube sealed inside an insulating block. Insulating oil is enclosed in a space defined by an upper surface of the insulating block and an inner surface of the X-ray tube accommodation portion. A high-voltage power supply unit connected to a target support portion is disposed on the upper surface. At least one protrusion portion protruding to an insulating valve side beyond a boundary portion where the high-voltage power supply unit, the upper surface, and the insulating oil meet and surrounding the high-voltage power supply unit is provided on the upper surface. An apex portion of the protrusion portion is separated from an imaginary plane including an end portion of the insulating valve and extending in a direction orthogonal to a tube axis.
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公开(公告)号：US20190318901A1
公开(公告)日：2019-10-17
申请号：US16380224
申请日：2019-04-10
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi ISHII , Ryosuke YABUSHITA , Tutomu INAZURU
Abstract: An X-ray tube includes a vacuum housing, an electron gun, and an anode that includes a target emitting X-rays and a target supporting portion supporting the target. The target supporting portion has an anode main body portion and a protrusion portion including a side surface portion. The anode main body portion includes an outer circumferential surface extending in a direction of a tube axis, and a connection portion formed between the side surface portion of the protrusion portion and the outer circumferential surface. An angle formed by the outer circumferential surface and the connection portion is an obtuse angle.
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公开(公告)号：US20210014956A1
公开(公告)日：2021-01-14
申请号：US17042624
申请日：2019-02-18
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Atsushi ISHII , Tomoaki TANIZAWA
IPC: H05G1/02
Abstract: An X-ray generator includes an X-ray tube, a blower fan having a motor and configured to provide the X-ray tube with air, a motor control unit configured to control a rotation speed of the motor, and a casing to which the X-ray tube and the blower fan are attached. The motor control unit shifts the rotation speed of the motor from a resonance frequency of a structure including the X-ray tube and the casing. According to this configuration, a resonance phenomenon caused by vibration generated by the motor is avoided. Therefore, influences of vibration on the X-ray tube are reduced. As a result, the X-ray generator can be operated in a highly stable manner.
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