X-RAY TUBE - HAMAMATSU PHOTONICS KK

Title:

X-RAY TUBE

Document Type and Number:

WIPO Patent Application WO/2024/004239

Kind Code:

A1

Abstract:

An x-ray tube according to the present invention comprises a housing, an electron gun that emits an electron beam inside the housing, and a target that is struck by the electron beam inside the housing and thereby generates x-rays. The electron gun has a cathode that discharges electrons and a focusing electrode that focuses the electrons onto the target as an electron beam. The focusing electrode is a cylinder that has an inside surface and an outside surface. The inside surface includes a first area and a second area that is on the target side of the first area. The average roughness of the second area is less than the average roughness of the first area.

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Inventors:

FURUKI HIROKI (JP)
ISHII ATSUSHI (JP)

Application Number:

PCT/JP2023/000469

Publication Date:

January 04, 2024

Filing Date:

January 11, 2023

Export Citation:

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Assignee:

HAMAMATSU PHOTONICS KK (JP)

International Classes:

H01J35/14

Domestic Patent References:

WO2020261339A1

2020-12-30

Foreign References:

JP2005038825A	2005-02-10
JP2012028132A	2012-02-09
JP2021022428A	2021-02-18

Attorney, Agent or Firm:

HASEGAWA Yoshiki et al. (JP)

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