公开(公告)号：US20240321542A1

公开(公告)日：2024-09-26

申请号：US18572420

申请日：2022-02-15

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Naonobu SUZUKI ,  Atsushi ISHII ,  Ryosuke YABUSHITA ,  Akimichi SHIMIZU ,  Naofumi KOSUGI ,  Ginji SUGIURA

IPC: H01J35/30 ,  H01J35/08 ,  H01J35/14 ,  H01J35/18

CPC classification number: H01J35/30 ,  H01J35/112 ,  H01J35/153 ,  H01J35/18

Abstract: An X-ray generation device includes: a housing; an electron gun including an electron-emitting unit that emits an electron inside the housing, and an extraction electrode for extracting the electron emitted from the electron-emitting unit; a target that generates an X-ray upon an incidence of the electron inside the housing; a window member that seals an opening of the housing and that transmits the X-ray; and a tube voltage application unit that applies a tube voltage between the electron-emitting unit and the target. A thickness of the target has a distribution, and the target is disposed to be inclined with respect to an imaginary plane orthogonal to an axis of the electron gun.

公开(公告)号：US20240274393A1

公开(公告)日：2024-08-15

申请号：US18568468

申请日：2022-02-14

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Naonobu SUZUKI ,  Astushi ISHII ,  Ryosuke YABUSHITA ,  Akimichi SHIMIZU ,  Naofumi KOSUGI ,  Ginji SUGIURA

IPC: H01J35/14 ,  H01J35/18

CPC classification number: H01J35/153 ,  H01J35/18

Abstract: An X-ray generation device includes: a housing; an electron gun including an electron-emitting unit that emits an electron inside the housing; a target that generates an X-ray upon an incidence of the electron inside the housing; a window member that seals an opening of the housing and that transmits the X-ray; a tube voltage application unit that applies a tube voltage between the electron-emitting unit and the target; and a magnetic field-forming unit for deflecting the electron by forming a magnetic field between the electron-emitting unit and the target. A thickness of the target has a distribution, and the target is disposed such that the electron is incident on a portion of the target which is relatively thinner in the thickness when the tube voltage is relatively low than when the tube voltage is relatively high.

公开(公告)号：US20210319971A1

公开(公告)日：2021-10-14

申请号：US16846401

申请日：2020-04-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Shinya HATTORI ,  Ryosuke YABUSHITA ,  Naofumi KOSUGI

IPC: H01J35/06 ,  H01J35/08

Abstract: An X-ray generation apparatus includes an electron gun emitting an electron beam having a circular cross-sectional shape, a magnetic focusing lens located downstream of the electron gun and focusing the electron beam while rotating the electron beam around an axis along a first direction, a magnetic quadrupole lens located downstream of the magnetic focusing lens and deforming the cross-sectional shape of the electron beam into an elliptical shape having a major axis along a second direction orthogonal to the first direction and a minor axis along a third direction orthogonal to the first direction and the second direction, and a target located downstream of the magnetic quadrupole lens and emitting an X-ray in response to incidence of the electron beam.

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

IPC: H01J35/18 ,  H01J9/24

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.

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

IPC: H01J35/18 ,  H01J35/14 ,  H01J35/30

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.