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    X-ray module
    1.
    发明授权
    X-ray module 有权

    公开(公告)号：US12154752B2

    公开(公告)日：2024-11-26

    申请号：US18140223

    申请日：2023-04-27

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Atsushi Ishii ,  Ginji Sugiura ,  Akihito Kobayashi

    IPC: H01J35/14 ,  H05G1/02

    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.

    X-ray tube
    3.
    发明授权
    X-ray tube 有权

    公开(公告)号：US10825641B2

    公开(公告)日：2020-11-03

    申请号：US16380259

    申请日：2019-04-10

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Atsushi Ishii ,  Tutomu Inazuru

    IPC: H01J35/16 ,  H01J35/08

    Abstract: An X-ray tube includes a metal portion in which an X-ray emission window is provided, an insulation valve which is joined to the metal portion and forms a vacuum region in cooperation with the metal portion, and a target and an electron gun which are accommodated in the vacuum region. The insulation valve has a low resistivity glass portion joined to the metal portion, and a high resistivity glass portion for fixing an anode including the target. A volume resistivity of a material forming the low resistivity glass portion is lower than a volume resistivity of a material forming the high resistivity glass portion. According to this configuration, electrification of the insulation valve is curbed, so that deterioration in withstand voltage ability of the insulation valve is curbed, and electric discharge caused by electrification is curbed.

    X-ray tube
    4.
    发明授权
    X-ray tube 有权

    公开(公告)号：US10825640B2

    公开(公告)日：2020-11-03

    申请号：US16380187

    申请日：2019-04-10

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Atsushi Ishii ,  Tutomu Inazuru

    IPC: H01J35/16 ,  H01J35/08

    Abstract: An X-ray tube includes an electron gun, a target that generates X-rays, and a vacuum housing that accommodates the electron gun and the target. The vacuum housing has a metal portion having an X-ray emission window, and an insulation valve connected to the metal portion. The metal portion has a cylinder portion in which the X-ray emission window is provided and which surrounds a tube axis of the vacuum housing, and a tapered portion which is connected to an end portion of the cylinder portion, surrounds the tube axis, and protrudes such that a connection part between the metal portion and an insulation valve is covered. The tapered portion has a shape increased in diameter such that a separation distance between a distal end portion and the tube axis is longer than a separation distance between a base end portion and the tube axis.

    X-ray module
    7.
    发明授权
    X-ray module 有权

    公开(公告)号：US11721515B2

    公开(公告)日：2023-08-08

    申请号：US17569686

    申请日：2022-01-06

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Atsushi Ishii ,  Ginji Sugiura ,  Akihito Kobayashi

    IPC: H01J35/14 ,  H05G1/02

    CPC classification number: H01J35/153 ,  H05G1/025 ,  H01J2235/1216 ,  H01J2235/1245 ,  H01J2235/1291

    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.

    X-ray generator
    8.
    发明授权
    X-ray generator 有权

    公开(公告)号：US11129264B2

    公开(公告)日：2021-09-21

    申请号：US17040140

    申请日：2019-02-18

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Atsushi Ishii ,  Akihito Kobayashi

    IPC: H05G1/06 ,  H01J35/16 ,  H05G1/26 ,  H05G1/02

    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.

    X-ray module
    9.
    发明授权
    X-ray module 有权

    公开(公告)号：US11728121B2

    公开(公告)日：2023-08-15

    申请号：US17572871

    申请日：2022-01-11

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Atsushi Ishii ,  Akihito Kobayashi

    IPC: H01J35/12 ,  H01J35/18 ,  H05G1/02 ,  H01J35/14

    CPC classification number: H01J35/12 ,  H01J35/186 ,  H01J35/153 ,  H01J35/18 ,  H01J2235/122 ,  H01J2235/1204 ,  H01J2235/1216 ,  H01J2235/1245 ,  H01J2235/1283 ,  H01J2235/1291 ,  H01J2235/18 ,  H05G1/025

    Abstract: An X-ray module includes a housing in which an opening portion is formed; an electron gun that emits an electron beam; a target that transmits an X-ray generated when the electron beam is incident on the target and emits the X-ray from an X-ray-emitting surface; an X-ray-emitting window that seals the opening portion, and that transmits the X-ray and emits the X-ray to a first side in an axial direction; and a heat radiating unit disposed outside the housing. The housing includes a surface on which a protrusion protruding to the first side is formed, the opening portion is formed in the protrusion, and the target is disposed in the opening portion. The heat radiating unit includes a first portion extending along the surface and thermally connected to the surface, and a second portion extending from the first portion to a second side opposite the first side.

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