公开(公告)号：US20180019092A1

公开(公告)日：2018-01-18

申请号：US15717372

申请日：2017-09-27

Applicant: NIKON METROLOGY NV

Inventor： Roger HADLAND

IPC: H01J35/02 ,  F16C33/76 ,  H02M1/32 ,  H02M7/10 ,  H01J35/16 ,  F16J15/16 ,  H01J29/48 ,  H01J35/04 ,  H01J35/10 ,  H05G1/12 ,  F16C35/04

CPC classification number: H01J35/025 ,  F16C33/768 ,  F16C35/042 ,  F16J15/16 ,  H01J29/48 ,  H01J35/04 ,  H01J35/06 ,  H01J35/101 ,  H01J35/106 ,  H01J35/108 ,  H01J35/16 ,  H01J37/065 ,  H01J2235/0236 ,  H01J2235/083 ,  H01J2235/086 ,  H01J2235/087 ,  H01J2235/1046 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/20 ,  H01J2237/2482 ,  H02M1/32 ,  H02M7/106 ,  H05G1/12

Abstract: Disclosed herein are a high-voltage generator for an x-ray source, an x-ray gun, an electron beam apparatus, a rotary vacuum seal, a target assembly for an x-ray source, a rotary x-ray emission target, and an x-ray source. These various aspects may separately and/or together enable the construction of an x-ray source which can operate at energies of up to 500 kV and beyond, which is suitable for use in commercial and research x-ray applications such as computerised tomography. In particular, the high-voltage generator includes a shield electrode electrically connected intermediate of a first voltage multiplier and a second voltage multiplier. The electron beam apparatus includes control photodetectors and photo emitters having a transparent conductive shield arranged therebetween. The rotary vacuum seal includes a pumpable chamber at a position intermediate between high-pressure and low-pressure ends of a bore for a rotating shaft. The rotary target assembly is configured such that when a torque between a bearing housing and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target has a plurality of target plates supported on a hub, the plates being arranged on the hub to provide an annular target region about an axis rotation of the hub. The x-ray gun is provided with a shield electrode maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode.

公开(公告)号：US20180005796A1

公开(公告)日：2018-01-04

申请号：US15596303

申请日：2017-05-16

Applicant: Nanox Imaging PLC

Inventor： Koichi IIDA ,  Jun Yamasaki

IPC: H01J35/14 ,  H05G1/46 ,  H05G1/32 ,  H05G1/52 ,  H01J35/04

CPC classification number: H01J35/14 ,  H01J35/04 ,  H01J35/30 ,  H01J2235/062 ,  H05G1/32 ,  H05G1/46 ,  H05G1/52

Abstract: The X-ray tube disclosed herein includes an electron emission part including an electron emission element using a cold cathode; an anode part having an anode surface with which an electron emitted from the electron emission part collides; and a focusing structure disposed between the electron emission part and a target part disposed on the anode surface. The focusing structure has a plurality of focal point areas that are applied with a voltage in a mutually independent manner. The electron emission part has first and second electron beam emission areas that are on/off controlled in a mutually independent manner. The X-ray tube is designed in such a way that a collision area of the electron beam emitted from each of the first and second electron beam emission areas on the anode surface moves in response to a voltage applied to the focusing structure.

公开(公告)号：US09791592B2

公开(公告)日：2017-10-17

申请号：US14539685

申请日：2014-11-12

Applicant: Schlumberger Technology Corporation

Inventor： Jani Reijonen

IPC: H01J35/00 ,  H01J35/02 ,  H01J35/04 ,  H01J35/14 ,  H01J35/16 ,  G01V5/04 ,  G01V5/12 ,  H01J35/32

CPC classification number: G01V5/04 ,  G01V5/125 ,  H01J35/00 ,  H01J35/02 ,  H01J35/025 ,  H01J35/04 ,  H01J35/045 ,  H01J35/14 ,  H01J35/16 ,  H01J35/32

Abstract: A radiation generator may include an elongate generator housing having a proximal end and a distal end, a target electrode within the elongate generator housing at the distal end thereof, a charged particle source within the elongate generator housing at the proximal end thereof to direct charged particles at the target electrode. A plurality of accelerator electrodes may be spaced apart within the elongate generator housing between the target electrode and the charged particle source to define a charged particle accelerator section. Each accelerator electrode may include an annular portion having a first opening therein, and a frustoconical portion having a base coupled to the first opening of the annular portion and having a second opening so that charged particles from the charged particle source pass through the first and second openings to reach the target electrode.

公开(公告)号：US09673592B2

公开(公告)日：2017-06-06

申请号：US14109292

申请日：2013-12-17

Applicant: Ronald Dittrich ,  Thomas Ferger ,  Christian Hoffmann

Inventor： Ronald Dittrich ,  Thomas Ferger ,  Christian Hoffmann

IPC: H02H1/00 ,  H02H1/04 ,  H02H9/06 ,  H01T4/08 ,  H01J35/02 ,  H01J35/04 ,  H05G1/54

CPC classification number: H01T4/08 ,  H01J35/025 ,  H01J35/04 ,  H05G1/54

Abstract: An x-ray tube includes a vacuum housing. A cathode and an anode are disposed in the vacuum housing and insulated by at least one insulation element. Upon application of a high voltage, the cathode emits electrons that strike the anode as an electron beam. A voltage arrester device with an insulation path has a field strength that is higher than a field strength at the insulation element. If a voltage flashover occurs, the voltage is discharged via the voltage arrester device.

公开(公告)号：US20170076904A1

公开(公告)日：2017-03-16

申请号：US15261463

申请日：2016-09-09

Applicant: Toshiba Electron Tubes & Devices Co., Ltd.

Inventor： Toshio HANAKI ,  Katsunori SHIMIZU ,  Hidero ANNO

IPC: H01J35/16 ,  H01J35/04 ,  H01J35/18

CPC classification number: H01J35/16 ,  H01J35/04 ,  H01J35/18 ,  H01J35/20 ,  H01J2235/205

Abstract: According to one embodiment, an X-ray tube includes an envelope including an inner space which is evacuated and is tightly closed and also including an X-ray radiation window, a cathode supporting member provided in the envelope, a cathode secured to the cathode supporting member, emitting electrons, and radiating heat, an anode target provided in the envelope, opposed to the X-ray radiation window, and radiating X-rays due to collision of the electrons emitted from the cathode, and a non-evaporable getter thermally connected to the cathode supporting member on the cathode side and activated by heat due to thermal conduction from the cathode supporting member.

Abstract translation: 根据一个实施例，一种X射线管包括一个外壳，该外壳包括一个被抽真空并被紧密关闭的内部空间，并且还包括一个X射线辐射窗，一个设置在外壳中的阴极支撑构件，一个阴极固定在阴极支撑 成员，发射电子和辐射热，设置在外壳中的与X射线辐射窗相对的阳极靶，并且由于从阴极发射的电子的碰撞而辐射X射线以及热连接的非蒸发性吸气剂 到阴极侧的阴极支撑构件，并且由于来自阴极支撑构件的热传导而被热激活。

公开(公告)号：US20160095568A1

公开(公告)日：2016-04-07

申请号：US14872348

申请日：2015-10-01

Applicant: Kabushiki Kaisha Toshiba ,  Toshiba Medical Systems Corporation

Inventor： Makoto TAKANAKA ,  Kunio SHIRAISHI ,  Shinsuke OOIE ,  Kentarou NISHIKAWA

IPC: A61B6/00

CPC classification number: A61B6/487 ,  A61B6/40 ,  A61B6/4233 ,  A61B6/486 ,  A61B6/54 ,  A61B6/542 ,  A61B6/56 ,  H01J35/04 ,  H01J35/045 ,  H05G1/085 ,  H05G1/30 ,  H05G1/32 ,  H05G1/34 ,  H05G1/42 ,  H05G1/44 ,  H05G1/58 ,  H05G1/60

Abstract: An X-ray diagnosis apparatus according to an embodiment includes an X-ray tube, judging circuitry, and grid controlling circuitry. The X-ray tube is configured to radiate X-rays. The judging circuitry is configured to judge whether a voltage should be applied to a grid of the X-ray tube or not, in accordance with a radiation condition. The grid controlling circuitry is configured to apply the voltage to the grid, if the judging circuitry has determined that the voltage should be applied.

Abstract translation: 根据实施例的X射线诊断装置包括X射线管，判断电路和电网控制电路。 X射线管被配置为辐射X射线。 判断电路被配置为根据放射状况来判断是否应该向X射线管的栅格施加电压。 如果判断电路已经确定应该施加电压，则电网控制电路被配置为将电压施加到电网。

公开(公告)号：US09117621B2

公开(公告)日：2015-08-25

申请号：US13971020

申请日：2013-08-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Koji Yamazaki ,  Yoshio Suzuki

IPC: H01J35/04 ,  H01J37/09 ,  H01J35/16 ,  H05G1/06

CPC classification number: H01J35/04 ,  H01J35/16 ,  H01J37/09 ,  H01J2235/087 ,  H01J2237/0206 ,  H05G1/06

Abstract: A radiation generating tube includes a vacuum envelope formed by an insulating tube, a cathode and an anode. At least one of the cathode and the anode is bonded to the insulating tube via a conductive bonding material disposed between bonded surfaces facing each other. The conductive bonding material is partially protruding from between the bonded surfaces to an outer peripheral surface or an inner peripheral surface of the insulating tube. A concave portion is formed on the outer peripheral surface or the inner peripheral surface of the insulating tube adjacent to a bonded surface on an insulating tube side, and a distal end of a conductive bonding material protruding from between bonded surfaces is accommodated in the concave portion.

Abstract translation: 辐射发生管包括由绝缘管，阴极和阳极形成的真空外壳。 阴极和阳极中的至少一个通过设置在彼此面对的接合表面之间的导电接合材料结合到绝缘管。 导电接合材料从接合表面之间部分地突出到绝缘管的外周表面或内周表面。 在与绝缘管侧的接合面相邻的绝缘管的外周面或内周面上形成有凹部，从接合面之间突出的导电性接合材料的前端容纳在凹部 。

公开(公告)号：US20140064453A1

公开(公告)日：2014-03-06

申请号：US14074115

申请日：2013-11-07

Applicant: The Boeing Company

Inventor： Morteza Safai

IPC: G01N23/203 ,  H01J35/04

CPC classification number: G01N23/203 ,  G01N2223/3301 ,  G01N2223/631 ,  G01N2223/646 ,  G21K1/043 ,  H01J35/04 ,  H01J35/08 ,  H01J35/18 ,  H05G1/04

Abstract: The different advantageous embodiments provide a method and apparatus. The apparatus comprises a moveable platform, a housing connected to the moveable platform, a power supply located inside of the housing, and an x-ray tube located inside of the housing. The power supply and the x-ray tube are immersed in a coolant. The x-ray tube is configured to generate an x-ray beam.

Abstract translation: 不同的有利实施例提供了一种方法和装置。 该装置包括可移动平台，连接到可移动平台的壳体，位于壳体内部的电源和位于壳体内部的X射线管。 将电源和X射线管浸入冷却液中。 X射线管被配置为产生X射线束。

公开(公告)号：US08223919B2

公开(公告)日：2012-07-17

申请号：US12787930

申请日：2010-05-26

Applicant: Edward James Morton

Inventor： Edward James Morton

IPC: G01N23/04

CPC classification number: G01N23/046 ,  A61B6/027 ,  G01N2223/419 ,  G01N2223/639 ,  H01J35/04 ,  H01J35/045 ,  H01J2235/068

Abstract: The present specification discloses an X-ray scanning system with a non-rotating X-ray scanner that generates scanning data defining a tomographic X-ray image of the object and a processor executing programmatic instructions where the executing processor analyzes the scanning data to extract at least one parameter of the tomographic X-ray image and where the processor is configured to determine if the object comprises a liquid, sharp object, narcotic, currency, nuclear materials, cigarettes or fire-arms.

Abstract translation: 本说明书公开了一种具有非旋转X射线扫描器的X射线扫描系统，该X射线扫描器产生定义对象的断层X射线图像的扫描数据和执行程序指令的处理器，其中执行处理器分析扫描数据以在 断层X射线图像的至少一个参数，并且其中处理器被配置为确定物体是否包括液体，尖锐物体，麻醉剂，货币，核材料，香烟或火焰臂。

公开(公告)号：US20110058643A1

公开(公告)日：2011-03-10

申请号：US12554164

申请日：2009-09-04

Applicant: Sergio Lamaitre ,  Carey Rogers ,  Yun Zou ,  Jizhong Chen

Inventor： Sergio Lamaitre ,  Carey Rogers ,  Yun Zou ,  Jizhong Chen

IPC: G01N23/04 ,  H01J35/06 ,  H05G1/10 ,  G01N23/08 ,  H01J35/14

CPC classification number: H01J35/04 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/482 ,  H01J35/045 ,  H01J35/06 ,  H01J2235/02 ,  H01J2235/06

Abstract: In one embodiment, an X-ray tube is provided. The X-ray tube comprises at least one thermionic cathode configured to generate an electron beam, a target assembly configured to generate X-rays when impinged with the electron beam emitted from the thermionic cathode, a high voltage supply unit for establishing an output voltage across the thermionic cathode and the target assembly for establishing an accelerating electric field between the thermionic cathode and the target assembly and a mesh grid disposed between the thermionic cathode and the target assembly, the mesh grid configured to operate at a voltage so as to lower the electric field applied at the surface of the thermionic cathode. Further, the voltage at the mesh grid is negatively biased with respect to the voltage at the thermionic cathode.

Abstract translation: 在一个实施例中，提供了X射线管。 所述X射线管包括构造成产生电子束的至少一个热离子阴极，配置成当与从所述热离子阴极发射的电子束碰撞时产生X射线的目标组件，用于建立跨越所述电子束的输出电压的高压电源单元 所述热离子阴极和所述目标组件用于在所述热离子阴极和所述目标组件之间建立加速电场，以及设置在所述热离子阴极和所述目标组件之间的网状网格，所述网状结构被配置为在电压下操作以降低所述电 场施加在热离子阴极的表面。 此外，网格网格处的电压相对于热离子阴极处的电压是负偏置的。