公开(公告)号：US09595415B2

公开(公告)日：2017-03-14

申请号：US14241426

申请日：2012-08-29

Applicant: Takao Ogura ,  Yoshihiro Yanagisawa ,  Miki Tamura ,  Ichiro Nomura ,  Tamayo Hiroki ,  Shigeki Matsutani ,  Kazuyuki Ueda

Inventor： Takao Ogura ,  Yoshihiro Yanagisawa ,  Miki Tamura ,  Ichiro Nomura ,  Tamayo Hiroki ,  Shigeki Matsutani ,  Kazuyuki Ueda

IPC: H01J37/02 ,  H01J35/08 ,  G01N23/04 ,  H01J35/16

CPC classification number: H01J35/08 ,  G01N23/04 ,  G01N23/043 ,  H01J35/16 ,  H01J35/18 ,  H01J2235/087 ,  H01J2235/168 ,  H01J2235/186

Abstract: Provided is an X-ray generator including an electron passage in an electron-passage forming member; and a target on an insulative substrate. The transmission X-ray generator irradiates the target with electrons that have passed through the electron passage to generate X-rays. The target is provided at a central region of the substrate; the electron passage accommodates a secondary-X-ray generating section that generates X-rays by irradiation with electrons reflected from the target; the secondary-X-ray generating section and the target are disposed so that both of X-rays generated by direct irradiation of the target with the electrons and X-rays generated by irradiation of the secondary-X-ray generating section with the electrons reflected from the target are radiated to the outside; and at least part of the peripheral region of the substrate has higher transmittance for the X-rays generated at the secondary-X-ray generating section than the central region of the substrate.

Abstract translation: 提供一种电子通道形成构件中具有电子通道的X射线发生器， 和绝缘基板上的靶。 透射X射线发生器用已经通过电子通道的电子照射靶，产生X射线。 靶设在基板的中心区域; 电子通道容纳通过从靶标反射的电子的照射产生X射线的次X射线产生部分; 二次X射线产生部和靶被配置为使得通过用电子直接照射目标而产生的X射线和通过二次X射线产生部的照射而产生的X射线被反射 从目标射到外面; 并且衬底的周边区域的至少一部分对于在二次X射线产生部分处产生的X射线比衬底的中心区域具有更高的透射率。

公开(公告)号：US09425021B2

公开(公告)日：2016-08-23

申请号：US14241817

申请日：2012-08-29

Applicant: Miki Tamura ,  Tamayo Hiroki ,  Shigeki Matsutani ,  Takao Ogura ,  Kazuyuki Ueda ,  Yoshihiro Yanagisawa ,  Ichiro Nomura

Inventor： Miki Tamura ,  Tamayo Hiroki ,  Shigeki Matsutani ,  Takao Ogura ,  Kazuyuki Ueda ,  Yoshihiro Yanagisawa ,  Ichiro Nomura

IPC: H01J35/08 ,  H01J35/14 ,  H01J35/16 ,  G01N23/04 ,  H05G1/70

CPC classification number: H01J35/08 ,  G01N23/04 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/087 ,  H01J2235/168 ,  H01J2235/186 ,  H05G1/70

Abstract: In an X-ray generation apparatus of transmission type including an electron emission source, and a target generating an X-ray with collision of electrons emitted from the electron emission source against the target, the X-ray generation apparatus further includes a secondary X-ray generation portion generating an X-ray with collision of electrons reflected by the target against the secondary X-ray generation portion, and the secondary X-ray generation portion and the target are arranged such that the X-ray generated with the direct collision of the electrons against the target and the X-ray generated with the collision of the electrons reflected by the target against the secondary X-ray generation portion are both radiated to an outside. X-ray generation efficiency is increased by effectively utilizing the electrons reflected by the target.

Abstract translation: 在包括电子发射源的透射型的X射线产生装置和产生从电子发射源发射的电子与靶相撞的X射线的靶上，X射线产生装置还包括二次X射线 射线产生部分，产生与目标反射的电子相对于次X射线产生部分的碰撞的X射线，并且次X射线产生部分和靶部被布置成使得由直接碰撞产生的X射线 靠着目标物的电子以及由靶子反射的二次X射线产生部分的碰撞产生的X射线都被辐射到外部。 通过有效地利用目标反射的电子来提高X射线产生效率。

公开(公告)号：US20160217966A1

公开(公告)日：2016-07-28

申请号：US14930293

申请日：2015-11-02

Applicant: Rapiscan Systems, Inc.

Inventor： Edward James Morton ,  Russell David Luggar ,  Paul De Antonis

IPC: H01J35/08

CPC classification number: H01J35/08 ,  H01J35/16 ,  H01J2235/086 ,  H01J2235/168

Abstract: The present invention is a shielded anode having an anode with a surface facing an electron beam and a shield configured to encompass the anode surface. The shield has at least one aperture and an internal surface facing the anode surface. The shield internal surface and anode surface are separated by a gap in the range of 1 mm to 10 mm. The shield of the present invention is fabricated from a material, such as graphite, that is substantially transmissive to X-ray photons.

Abstract translation: 本发明是一种屏蔽阳极，其具有面向电子束的表面的阳极和构造成包围阳极表面的屏蔽。 屏蔽件具有至少一个孔和面向阳极表面的内表面。 屏蔽内表面和阳极表面被间隔在1mm至10mm范围内。 本发明的屏蔽是由诸如石墨的材料制成的，其基本上对X射线光子是透射的。

公开(公告)号：US20160163497A1

公开(公告)日：2016-06-09

申请号：US14559747

申请日：2014-12-03

Applicant: VARIAN MEDICAL SYSTEMS, INC.

Inventor： Kasey Otho Greenland ,  Robert S. Miller

IPC: H01J35/08 ,  H01J35/06 ,  C23C16/06 ,  C23C4/08 ,  C23C14/24 ,  C23C14/14 ,  H01J35/18 ,  C23C4/12

CPC classification number: H01J35/08 ,  C23C4/08 ,  C23C4/12 ,  C23C4/122 ,  C23C4/123 ,  C23C4/126 ,  C23C4/127 ,  C23C14/14 ,  C23C14/24 ,  C23C16/06 ,  H01J35/06 ,  H01J35/18 ,  H01J2235/06 ,  H01J2235/081 ,  H01J2235/088 ,  H01J2235/168 ,  H01J2235/18

Abstract: The disclosed subject matter includes devices and methods relating to anode assemblies and/or X-ray assemblies. In some aspects, a method of forming an X-ray assembly may include providing an anode base formed of a first material and including a first end. The method may include depositing a second material different from the first material over a first surface of the anode base to form a coated portion of the anode base. The coated portion may be configured such that some backscattered electrons do not travel beyond the coated portion.

Abstract translation: 所公开的主题包括与阳极组件和/或X射线组件相关的装置和方法。 在一些方面，形成X射线组件的方法可以包括提供由第一材料形成并包括第一端的阳极基底。 该方法可以包括在阳极基底的第一表面上沉积不同于第一材料的第二材料以形成阳极基底的涂覆部分。 涂覆部分可以被配置为使得一些背散射电子不会超过涂覆部分。

公开(公告)号：US20160155598A1

公开(公告)日：2016-06-02

申请号：US14950570

申请日：2015-11-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takashi Shiozawa ,  Kazuya Tsujino ,  Koichi Tsunoda ,  Nobuhiro Ito ,  Kazuhiro Sando ,  Yoichi Ikarashi

IPC: H01J35/08 ,  H01J35/14 ,  H05G1/10 ,  H01J35/06

CPC classification number: H01J35/08 ,  H01J35/06 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/087 ,  H01J2235/088 ,  H01J2235/168 ,  H05G1/10

Abstract: An X-ray generation tube includes: an anode including a target configured to generate X-rays under irradiation of electrons, and an anode member electrically connected to the target; a cathode including an electron emitting source configured to emit an electron beam in a direction towards the target, and a cathode member electrically connected to the electron emitting source; and an insulating tube extending between the anode member and the cathode member. The anode further includes an inner circumferential anode layer electrically connected to the anode member, the inner circumferential anode layer extending along an inner circumferential face of the insulating tube, and is remote from the cathode member.

Abstract translation: X射线发生管包括：阳极，其包括被配置为在电子照射下产生X射线的靶;以及阳极，电连接到靶; 包括电子发射源的阴极，被配置为沿着朝向所述靶的方向发射电子束;以及阴极部件，电连接到所述电子发射源; 以及在阳极部件和阴极部件之间延伸的绝缘管。 阳极还包括与阳极部件电连接的内周阳极层，内周阳极层沿着绝缘管的内周面延伸，远离阴极部件。

公开(公告)号：US09214312B2

公开(公告)日：2015-12-15

申请号：US13496429

申请日：2010-09-29

Applicant: Jörg Freudenberger ,  Lothar Werner

Inventor： Jörg Freudenberger ,  Lothar Werner

IPC: H01J35/16

CPC classification number: H01J35/16 ,  H01J2235/168

Abstract: An x-ray tube has a backscatter electron trap to prevent extra focal radiation caused by backscattered electrons from the focal spot from passing through the beam exit window to an exterior of the x-ray tube. The backscatter electron trap has a surface that faces the x-ray beam in the x-ray tube. No portion of that surface is visible both from an arbitrary point in the x-ray beam outside of the x-ray tube and from an arbitrary point at the focal spot.

Abstract translation: X射线管具有反向散射电子阱，以防止由来自焦斑的反向散射电子引起的额外焦点辐射通过射束出射窗到X射线管的外部。 反向散射电子阱具有面对X射线管中的X射线束的表面。 X射线管外的X射线束的任意点以及焦点的任意点都不能看到该表面的任何部分。

公开(公告)号：US09208986B2

公开(公告)日：2015-12-08

申请号：US13672100

申请日：2012-11-08

Applicant: General Electric Company

Inventor： Yun Zou ,  Carey Shawn Rogers ,  John Scott Price ,  Sergio Lemaitre ,  Mark Alan Frontera ,  Peter Andras Zavodsky

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

CPC classification number: H01J35/025 ,  H01J35/14 ,  H01J2235/168

Abstract: An X-ray tube assembly includes an electron beam transport tube, a beam tube protection assembly, and a control module. The electron beam transport tube includes an opening configured for passage of an electron beam, and includes an inner surface bounding the opening along a length of the electron beam transport tube. The beam tube protection assembly includes a plurality of beam protection electrode segments disposed within the opening of the electron beam transport tube and configured to protect the inner surface of the electron beam transport tube from contact with the electron beam. The control module is configured to determine a direction of the electron beam responsive to information received from the beam tube protection assembly.

Abstract translation: X射线管组件包括电子束输送管，束管保护组件和控制模块。 电子束传送管包括被构造用于电子束通过的开口，并且包括沿电子束传送管的长度限定开口的内表面。 光束管保护组件包括多个光束保护电极段，其设置在电子束传输管的开口内并被配置为保护电子束传输管的内表面免受与电子束的接触。 控制模块被配置为响应于从束管保护组件接收的信息来确定电子束的方向。

公开(公告)号：US09159525B2

公开(公告)日：2015-10-13

申请号：US13476209

申请日：2012-05-21

Applicant: Koji Yamazaki ,  Kazuyuki Ueda

Inventor： Koji Yamazaki ,  Kazuyuki Ueda

IPC: H01J35/16 ,  H01J35/06 ,  H01J35/18

CPC classification number: H01J35/16 ,  H01J35/06 ,  H01J35/18 ,  H01J2235/087 ,  H01J2235/168 ,  H01J2235/186

Abstract: The present invention provides a radiation generating tube which suppresses electrical charging of an inner wall of an insulating tube attributable to electron emission from a junction between the insulating tube and a cathode and which has improved voltage withstand capability. The radiation generating tube comprising: a hollow insulating tube; a cathode and an anode respectively bonded to both ends of the insulating tube; and an electron emission source provided on the cathode, the radiation generating tube having a vacuum interior space. The electron emission source includes an electron emitting portion in the interior space, and the insulating tube includes a protrusion that protrudes into the interior space.

Abstract translation: 本发明提供了一种辐射发生管，其抑制由绝缘管和阴极之间的接合处的电子发射引起的绝缘管的内壁的充电，并且具有改善的耐电压能力。 辐射发生管包括：中空绝缘管; 分别结合到绝缘管的两端的阴极和阳极; 和设置在阴极上的电子发射源，该辐射发生管具有真空内部空间。 电子发射源包括在内部空间中的电子发射部分，并且绝缘管包括突出到内部空间中的突起。

公开(公告)号：US08908833B2

公开(公告)日：2014-12-09

申请号：US13337673

申请日：2011-12-27

Applicant: Masahiro Nonoguchi ,  Masashi Kageyama ,  Tomohiro Chaki ,  Masaaki Yamakata ,  Koichi Kato ,  Masaru Kuribayashi

Inventor： Masahiro Nonoguchi ,  Masashi Kageyama ,  Tomohiro Chaki ,  Masaaki Yamakata ,  Koichi Kato ,  Masaru Kuribayashi

IPC: H01J35/10 ,  H01J35/06 ,  H01J35/14 ,  H01J35/16

CPC classification number: H01J35/10 ,  H01J35/06 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/06 ,  H01J2235/086 ,  H01J2235/166 ,  H01J2235/168

Abstract: Provided is an X-ray generator comprising a cathode for generating electrons; a rotating anode having a cylindrical electron impingement surface, an X-ray focal point being formed by a region in which the electrons impinge upon the electron impingement surface; and a Wehnelt electrode for imparting an electric field to the electrons emitted from the cathode. The Wehnelt electrode has a field formation surface for forming the electric field, and an electron passage aperture formed by the field formation surface. The field formation surface of the Wehnelt electrode is inclined with respect to a plane tangent to an outer circumferential surface of the rotating anode at the center of the X-ray focal point. The center of the cathode is in a plane orthogonal to the field formation surface and aligned with the center of the electron passage aperture.

Abstract translation: 提供一种X射线发生器，其包括用于产生电子的阴极; 具有圆柱形电子冲击表面的旋转阳极，由电子撞击在电子冲击表面上的区域形成的X射线焦点; 以及用于向从阴极发射的电子赋予电场的Wehnelt电极。 Wehnelt电极具有用于形成电场的场形成表面和由场形成表面形成的电子通过孔。 Wehnelt电极的场形成面相对于与X射线焦点的中央处的旋转阳极的外周面相切的面倾斜。 阴极的中心在垂直于场形成表面并与电子通过孔的中心对准的平面中。

公开(公告)号：US08879690B2

公开(公告)日：2014-11-04

申请号：US13337940

申请日：2011-12-27

Applicant: Tomohiro Chaki ,  Koichi Kato ,  Masahiro Nonoguchi ,  Masashi Kageyama ,  Masaru Kuribayashi

Inventor： Tomohiro Chaki ,  Koichi Kato ,  Masahiro Nonoguchi ,  Masashi Kageyama ,  Masaru Kuribayashi

IPC: H01J35/06 ,  H01J35/14 ,  H01J35/16 ,  H01J29/02 ,  H01J29/04 ,  H01J35/10

CPC classification number: H01J35/10 ,  H01J35/06 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/06 ,  H01J2235/086 ,  H01J2235/166 ,  H01J2235/168

Abstract: Provided is an X-ray generator for generating X-rays from an X-ray focal point that is a region in which electrons emitted from a filament impinge upon a rotating anode. The X-ray generator has a Wehnelt electrode for surrounding the filament, an attachment part formed integrally with the Wehnelt electrode, a pedestal to which the attachment part is attached, and a casing for housing the pedestal and the anticathode. The width of the space in which the anticathode is housed by the casing is less than the width of the space in which the pedestal is housed by the casing. The Wehnelt electrode extends into the space in which the anticathode is housed by the casing, in a state in which the attachment part is attached to the pedestal.

Abstract translation: 提供一种用于从X射线焦点产生X射线的X射线发生器，X射线焦点是从灯丝发射的电子撞击在旋转阳极上的区域。 X射线发生器具有用于围绕灯丝的Wehnelt电极，与Wehnelt电极一体形成的安装部分，安装有附接部件的基座以及用于容纳基座和抗电极的壳体。 由外壳容纳防蚁的空间的宽度小于由壳体容纳基座的空间的宽度。 Wehnelt电极在安装部分附接到基座的状态下延伸到由壳体容纳阴极的空间中。