公开(公告)号：US20150162162A1

公开(公告)日：2015-06-11

申请号：US14561118

申请日：2014-12-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： Koichi Takasaki ,  Noritaka Ukiyo ,  Osamu Taniguchi ,  Takao Ogura

IPC: H01J35/16 ,  G01N23/04

CPC classification number: H01J35/16 ,  G21K1/02 ,  H01J2235/087 ,  H01J2235/165

Abstract: A radiation tube includes an enclosure having an opening portion, an electron source disposed inside the enclosure, a target unit configured to generate radiation by being bombarded with electrons emitted from the electron source, and a front shield disposed on the opening portion and joined to the target unit. The front shield has a slit-shaped opening that shields some of the radiation radiated from the target unit. The radiation is radiated through the opening in the shape of a fan beam.

Abstract translation: 辐射管包括具有开口部分的外壳，设置在外壳内部的电子源，被配置为通过用从电子源发射的电子轰击而产生辐射的目标单元，以及设置在开口部分上并连接到 目标单位。 前屏蔽件具有狭缝形开口，其遮蔽从目标单元辐射的一些辐射。 辐射以风扇光束的形状通过开口辐射。

公开(公告)号：US20130266119A1

公开(公告)日：2013-10-10

申请号：US13857749

申请日：2013-04-05

Applicant: CANON KABUSHIKI KAISHA

Inventor： Osamu Taniguchi ,  Takao Ogura

IPC: H01J35/14 ,  G01N23/04

CPC classification number: H01J35/14 ,  G01N23/04 ,  H01J35/08 ,  H01J35/116

Abstract: A transmission type micro-focus X-ray generation apparatus includes an electron reflector, an electron passage surrounded by the electron reflector, an electron source, and a target. X-rays are generated by irradiating the target with electrons that have been emitted from the electron source and that have passed through the electron passage. The electron passage has a conical shape having a cross-sectional area that increases from an outlet on the target side toward an inlet on the electron source side. A material of the target is molybdenum, tantalum, or tungsten. The atomic number of a material of the electron reflector is greater than or equal to the atomic number of the material of the target.

Abstract translation: 透射型微焦X射线产生装置包括电子反射体，由电子反射体包围的电子通道，电子源和靶。 通过从电子源发射并且已通过电子通道的电子照射靶，产生X射线。 电子通道具有从目标侧的出口朝向电子源侧的入口增加的截面积的圆锥形状。 目标材料是钼，钽或钨。 电子反射体的材料的原子数大于或等于目标材料的原子序数。

公开(公告)号：US09761406B2

公开(公告)日：2017-09-12

申请号：US14561118

申请日：2014-12-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： Koichi Takasaki ,  Noritaka Ukiyo ,  Osamu Taniguchi ,  Takao Ogura

IPC: H01J35/00 ,  H01J35/16 ,  G21K1/02

CPC classification number: H01J35/16 ,  G21K1/02 ,  H01J2235/087 ,  H01J2235/165

Abstract: A radiation tube includes an enclosure having an opening portion, an electron source disposed inside the enclosure, a target unit configured to generate radiation by being bombarded with electrons emitted from the electron source, and a front shield disposed on the opening portion and joined to the target unit. The front shield has a slit-shaped opening that shields some of the radiation radiated from the target unit. The radiation is radiated through the opening in the shape of a fan beam.