公开(公告)号：US20180033580A1

公开(公告)日：2018-02-01

申请号：US15717388

申请日：2017-09-27

Applicant: NIKON METROLOGY NV

Inventor： Roger HADLAND

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

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：US09748070B1

公开(公告)日：2017-08-29

申请号：US14849647

申请日：2015-09-10

Applicant: Jordan Valley Semiconductors Ltd.

Inventor： John Leonard Wall

IPC: H01J35/10 ,  H01J35/08 ,  H01J35/18

CPC classification number: H01J35/106 ,  H01J35/08 ,  H01J35/14 ,  H01J35/18 ,  H01J2235/086 ,  H01J2235/088 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/186

Abstract: An X-ray tube includes a cathode and an anode. The cathode is configured to generate an electron beam. The anode has at least one hole that faces the electron beam, the hole having sidewalls and a floor. The electron beam impinges on one or more of the sidewalls of the at least one hole so as to emit a first X-ray beam at angles that are not orthogonal to a surface of the anode. The electron beam also impinges on the floor of the at least one hole so as to emit a second X-ray beam, at least some of which is emitted at an angle that is orthogonal to the surface of the anode.

公开(公告)号：US09275822B2

公开(公告)日：2016-03-01

申请号：US13663287

申请日：2012-10-29

Applicant: VARIAN MEDICAL SYSTEMS, INC.

Inventor： Ward Vincent Coon ,  Dennis H. Runnoe ,  Lawrence Wheatley Bawden

IPC: H01J35/10

CPC classification number: H01J35/106 ,  H01J2235/1204 ,  H01J2235/1208 ,  H01J2235/1279

Abstract: Liquid metal containment in an x-ray tube. In one example embodiment, an x-ray tube anode assembly includes a shaft terminated by a head and an anode connected to an anode hub. The anode hub is at least partially surrounding the head of the shaft. The anode hub is configured to contain a volume of a liquid metal and to rotate around the stationary shaft. The anode hub may also define a catch space within the anode hub that is configured to catch the liquid metal in order to contain the liquid metal within the hub while in a non-rotating state and regardless of the orientation of the x-ray tube anode assembly.

Abstract translation: 液体金属容纳在x射线管中。 在一个示例实施例中，x射线管阳极组件包括由头部终止的轴和连接到阳极轮毂的阳极。 阳极轮毂至少部分地围绕轴的头部。 阳极毂被构造成容纳一定体积的液态金属并围绕固定轴旋转。 阳极轮毂还可以限定阳极轮毂内的捕获空间，其被构造成捕获液体金属，以便在处于非旋转状态时将液体金属容纳在轮毂内，并且与X射线管阳极的取向无关 部件。

公开(公告)号：US09263226B2

公开(公告)日：2016-02-16

申请号：US14005605

申请日：2012-12-31

Applicant: Nuctech Company Limited

Inventor： Ziran Zhao ,  Zhiqiang Chen ,  Xilei Luo ,  Fuhua Ding ,  Wanlong Wu ,  Zhimin Zheng

IPC: H01J35/16 ,  H01J35/10 ,  H01J35/12 ,  H05G1/08 ,  G01N23/04 ,  H05G1/02 ,  H05G1/04

CPC classification number: H01J35/16 ,  G01N23/04 ,  H01J35/105 ,  H01J35/106 ,  H01J35/12 ,  H05G1/025 ,  H05G1/04 ,  H05G1/08 ,  H05G1/085

Abstract: Embodiments include an X-ray generator including a radiation device installation housing and an X-ray generator. In various embodiments, the radiation device installation housing comprises a housing body, a flange fixedly provided on an inner wall of the housing body and shaped in circular and a compensation device fixedly or movably connected with the flange in a liquid tight manner; a liquid receiving cavity for receiving an insulating liquid formed between one side of two opposite sides of the compensation device and the inner wall of the housing body as well as the flange; a compensation device moving space formed between another side of the two opposite sides of the compensation device opposed to the inner wall of the housing body and an inner wall of the flange.

Abstract translation: 实施例包括具有辐射装置安装壳体和X射线发生器的X射线发生器。 在各种实施例中，辐射装置安装壳体包括壳体，凸缘，其固定地设置在壳体主体的内壁上并成形为圆形，并且补偿装置以液密方式与凸缘固定或可移动地连接; 用于接收在所述补偿装置的两个相对侧的一侧和所述壳体的内壁之间形成的绝缘液体的液体接收腔以及所述凸缘; 补偿装置移动空间形成在与壳体的内壁相对的补偿装置的两个相对侧的另一侧和凸缘的内壁之间。

公开(公告)号：US20160020058A1

公开(公告)日：2016-01-21

申请号：US14774424

申请日：2014-03-12

Applicant: NIKON METROLOGY NV

Inventor： Roger HADLAND

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

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 (120) 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 (500), 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 (123a, 123b) electrically connected intermediate of a first voltage multiplier (122a, 122b) and a second voltage multiplier (122b, 122c). The electron beam apparatus includes control photodetectors (202a, 202b—not shown) and photo emitters (201a, 202a) having a transparent conductive shield (203a and 203b, 203c—not shown) arranged therebetween. The rotary vacuum seal includes a pumpable chamber (302) at a position intermediate between high-pressure and low-pressure ends of a bore (301) for a rotating shaft (401). The rotary target assembly is configured such that when a torque between a bearing housing (403) and a vacuum housing exceeds a predetermined torque, the bearing housing rotates relative to the vacuum housing. The rotary x-ray emission target (500) has a plurality of target plates (560) 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 (123a) maintained at a potential difference relative to the x-ray target different to the electron beam emission cathode.

Abstract translation: 本文公开了一种用于x射线源的高压发生器（120），x射线枪，电子束装置，旋转真空密封件，用于x射线源的靶组件，旋转x射线发射 目标（500）和x射线源。 这些各个方面可以单独地和/或一起实现能够在高达500kV及以上的能量下运行的x射线源，其适用于商业和研究的X射线应用如计算机断层摄影。 特别地，高电压发生器包括电连接第一电压倍增器（122a，122b）和第二电压倍增器（122b，122c）之间的屏蔽电极（123a，123b）。 电子束装置包括控制光电检测器（202a，202b，未示出）和具有布置在其间的透明导电屏蔽（203a和203b，203c-未示出）的光发射器（201a，202a）。 旋转式真空密封件包括位于用于旋转轴（401）的孔（301）的高压和低压端之间的位置的可泵送室（302）。 旋转目标组件被构造成使得当轴承壳体（403）和真空壳体之间的扭矩超过预定扭矩时，轴承壳体相对于真空壳体旋转。 旋转X射线发射目标（500）具有支撑在轮毂上的多个目标板（560），所述板布置在轮毂上以围绕轮毂的轴线旋转提供环形目标区域。 X射线枪设置有相对于与电子束发射阴极不同的x射线靶保持在电位差的屏蔽电极（123a）。

公开(公告)号：US20160015357A1

公开(公告)日：2016-01-21

申请号：US14771858

申请日：2013-03-01

Applicant: ANALOGIC CORPORATION

Inventor： David ROZAS ,  Aleksander ROSHI ,  Charles SHAUGHNESSY

IPC: A61B6/00 ,  A61B6/03

CPC classification number: A61B6/585 ,  A61B6/032 ,  G06T11/005 ,  H01J35/106 ,  H01J2235/1204 ,  H01J2235/1266

Abstract: Among other things, one or more techniques and/or systems for calibration of a radiation system to compute a gain correction(s) are provided. A calibration procedure is performed during which a portion of the detector array is shadowed by an object, causing the detector array to be non-uniformly exposed to radiation. A portion of a projection generated from the calibration procedure and indicative of radiation that did not traverse the object is separated from a portion of the projection indicative of radiation that did traverse the object, and a gain correction(s) is computed from the portion of the projection indicative of radiation that did not traverse the object (e.g., and is thus indicative of radiation that merely traversed air).

Abstract translation: 提供了一种或多种用于校准辐射系统以计算增益校正的技术和/或系统。 执行校准过程，在此期间，检测器阵列的一部分被物体遮蔽，导致检测器阵列不均匀地暴露于辐射。 从校准过程产生的并且指示未穿过物体的辐射的投影的一部分与指示穿过物体的辐射的投影的一部分分离，并且从该部分中计算增益校正 指示未穿过物体的辐射的投影（例如，并且因此指示仅穿过空气的辐射）。

公开(公告)号：US20150364289A1

公开(公告)日：2015-12-17

申请号：US14616752

申请日：2015-02-09

Applicant: Metal Industries Research & Development Centre

Inventor： Yen-Chun Chen ,  Wei-Hung Shih ,  Yi-San Chang ,  Tsung-Chih Yu ,  Wen-Hsin Hsieh ,  Ming-Hui Cheng

IPC: H01J35/12

CPC classification number: H01J35/12 ,  H01J35/106 ,  H01J35/186 ,  H01J2235/1204 ,  H01J2235/1262

Abstract: A radiation generating apparatus includes a target base, a target, an electronic beam generating device, a tube, a tank, and a porous structure. The target is disposed on the target base. The electronic beam generating device is adapted to generate an electronic beam, and the electronic beam is emitted to the target to generate a radiation. The tube accommodates the target and the electronic beam generating device. The tank is connected to the target base and is accommodated by the tube. The porous structure is disposed in the tank and contacts the target base. A cooling fluid flows through the porous structure to dissipate the heat of the porous structure.

Abstract translation: 辐射发生装置包括目标基座，靶，电子束产生装置，管，罐和多孔结构。 目标被放置在目标基地上。 电子束产生装置适于产生电子束，并且电子束被发射到靶以产生辐射。 管容纳目标和电子束产生装置。 油箱连接到目标基座并由管容纳。 多孔结构设置在罐中并接触目标基底。 冷却流体流过多孔结构以消散多孔结构的热量。

公开(公告)号：US20150078531A1

公开(公告)日：2015-03-19

申请号：US14488489

申请日：2014-09-17

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Electron Tubes & Devices Co., Ltd.

Inventor： Yoshifumi IMAI ,  Tomonari ISHIHARA

IPC: H01J35/10 ,  H05G1/66 ,  H01J35/18

CPC classification number: H01J35/101 ,  H01J35/106 ,  H01J35/18

Abstract: According to one embodiment, a rotating-anode X-ray tube assembly includes an X-ray tube, a stator coil, a housing, an X-ray radiation window, and a coolant. The housing includes a first divisional part which includes an X-ray radiation port and to which the X-ray tube is directly or indirectly fixed, and a second divisional part located on a side opposite to an anode target with respect to an anode target rotating mechanism and coupled to the first divisional part. A coupling surface between the first divisional part and the second divisional part is located on one plane, and is inclined to an axis, with exclusion of a direction perpendicular to the axis.

Abstract translation: 根据一个实施例，旋转阳极X射线管组件包括X射线管，定子线圈，外壳，X射线辐射窗和冷却剂。 壳体包括第一分割部分，其包括X射线辐射端口，X射线管直接或间接固定到该第一分割部分，以及相对于阳极靶旋转的位于阳极靶的相反侧的第二分割部分 机制，并结合第一部分。 第一分割部分和第二分割部分之间的耦合表面位于一个平面上，并且相对于轴线倾斜，排除垂直于轴线的方向。

公开(公告)号：US20140355743A1

公开(公告)日：2014-12-04

申请号：US13906944

申请日：2013-05-31

Applicant: General Electric Company

Inventor： Ian Strider Hunt ,  Ben David Poquette ,  Andrew Thomas Triscari

IPC: H01J35/10 ,  F16C33/04 ,  F16C33/12 ,  F16C32/06

CPC classification number: H01J35/101 ,  F16C17/107 ,  F16C33/043 ,  F16C33/107 ,  F16C33/122 ,  F16C2202/60 ,  F16C2202/66 ,  F16C2210/08 ,  F16C2223/30 ,  F16C2380/16 ,  H01J35/106 ,  H01J2235/106 ,  H01J2235/1066 ,  H01J2235/1086 ,  Y10T29/49639

Abstract: A bearing assembly is disclosed that includes a sleeve having an opening formed therein and a shaft positioned within the opening of the sleeve such that a gap is formed between an inner surface of the sleeve and an outer surface of the shaft. A lubricant is disposed in the gap and a plurality of grooves are formed on at least one of the outer surface of the shaft and the inner surface of the sleeve. An anti-wetting coating is disposed on the at least one of the outer surface of the shaft and the inner surface of the sleeve between adjacent grooves of the plurality of grooves.

Abstract translation: 公开了一种轴承组件，其包括其中形成有开口的套筒和位于套筒的开口内的轴，使得在套筒的内表面和轴的外表面之间形成间隙。 润滑剂设置在间隙中，并且多个凹槽形成在轴的外表面和套筒的内表面中的至少一个上。 防湿涂层设置在轴的外表面中的至少一个和套筒的内表面之间的多个槽的相邻槽之间。

公开(公告)号：US20140247922A1

公开(公告)日：2014-09-04

申请号：US14190328

申请日：2014-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Electron Tubes & Devices Co., Ltd.

Inventor： Masataka UEKI ,  Yasutaka ITO

IPC: H01J35/10

CPC classification number: H01J35/101 ,  F16C17/026 ,  F16C17/102 ,  H01J35/106 ,  H01J2235/1053 ,  H01J2235/106 ,  H01J2235/1086

Abstract: According to one embodiment, a rotating anode X-ray tube includes a fixed shaft, a rotor, a lubricant, target, and a supporting member. The fixed shaft includes a small-diameter portion provided with a first radial bearing surface including first grooved surfaces, and a large-diameter portion provided with a second radial bearing surface including second grooved surfaces. The rotor includes a third radial bearing surface. The lubricant is filled in a gap between the fixed shaft and the rotor, and drawn by the first and second grooved surfaces.

Abstract translation: 根据一个实施例，旋转阳极X射线管包括固定轴，转子，润滑剂，靶和支撑构件。 固定轴包括设置有包括第一开槽表面的第一径向支承表面的小直径部分和设置有包括第二凹槽表面的第二径向支承表面的大直径部分。 转子包括第三径向支承表面。 润滑剂填充在固定轴和转子之间的间隙中，并且被第一和第二槽表面拉伸。