公开(公告)号：US20180033579A1

公开(公告)日：2018-02-01

申请号：US15717364

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：US09824787B2

公开(公告)日：2017-11-21

申请号：US15618458

申请日：2017-06-09

Applicant: Moxtek, Inc.

Inventor： Eric Miller ,  Bill Hansen

IPC: G21K5/08 ,  H01J35/06 ,  H01J35/18 ,  G21K5/10 ,  H01J35/08 ,  H05F3/04

CPC classification number: G21K5/08 ,  G21K5/10 ,  H01J35/06 ,  H01J35/08 ,  H01J35/18 ,  H01J2235/086 ,  H01J2235/087 ,  H05F3/04

Abstract: In one embodiment, the invention includes an x-ray source having a cathode with an elongated blade oriented substantially transverse with respect to a longitudinal axis of the cathode. The blade can be pointed towards an anode. In another embodiment, the invention includes an x-ray source having a window with an annular-shape, forming a hollow-ring. A convex portion of a half-ball-shape of an anode can extend into a hollow of the annular-shape of the window. In another embodiment, the invention includes an x-ray source having an anode with a dome shape having a concave side facing the electron emitter.

公开(公告)号：US09818569B2

公开(公告)日：2017-11-14

申请号：US14587634

申请日：2014-12-31

Applicant: Rad Source Technologies, Inc.

Inventor： Phillip Kent Ausburn

IPC: H01J35/32 ,  H01J35/18 ,  H01J35/08 ,  H01J37/06 ,  H01J19/32 ,  H01J19/48 ,  H01J1/16 ,  H01J1/40 ,  H01J37/063 ,  H01J35/06 ,  H01J35/16 ,  H01J1/94 ,  A61B6/00 ,  H01J19/57

CPC classification number: H01J19/32 ,  A61B6/40 ,  A61B6/482 ,  H01J1/16 ,  H01J1/40 ,  H01J1/94 ,  H01J19/48 ,  H01J19/57 ,  H01J35/06 ,  H01J35/08 ,  H01J35/16 ,  H01J35/18 ,  H01J35/32 ,  H01J37/063 ,  H01J2235/087 ,  H01J2235/186 ,  H01J2893/0006 ,  H01J2893/0012

Abstract: A high dose output, through transmission target X-ray tube and methods of use includes, in general an X-ray tube for accelerating electrons under a high voltage potential having an evacuated high voltage housing, a hemispherical shaped through transmission target anode disposed in said housing, a cathode structure to deflect the electrons toward the hemispherical anode disposed in said housing, a filament located in the geometric center of the anode hemisphere disposed in said housing, a power supply connected to said cathode to provide accelerating voltage to the electrons.

公开(公告)号：US09779847B2

公开(公告)日：2017-10-03

申请号：US14739712

申请日：2015-06-15

Applicant: Moxtek, Inc.

Inventor： Eric Miller ,  Bill Hansen

IPC: H01J35/06 ,  G21K5/08 ,  H01J35/18 ,  G21K5/10 ,  H01J35/08 ,  H05F3/04

CPC classification number: G21K5/08 ,  G21K5/10 ,  H01J35/06 ,  H01J35/08 ,  H01J35/18 ,  H01J2235/086 ,  H01J2235/087 ,  H05F3/04

Abstract: In one embodiment, the invention includes an x-ray source having a cathode with (1) a pointed end or (2) an elongated blade oriented substantially transverse with respect to a longitudinal axis of the cathode. The pointed end or blade can be pointed towards an anode. In another embodiment, the invention includes an x-ray source having a window with an annular-shape, forming a hollow-ring. A convex portion of a half-ball-shape of an anode can extend into a hollow of the annular-shape of the window.

公开(公告)号：US09748069B2

公开(公告)日：2017-08-29

申请号：US14315519

申请日：2014-06-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jong-pil Kim ,  Woo-sup Han ,  Kyung-hun Yoon

IPC: H01J35/06 ,  H01J35/08 ,  A61B6/02 ,  A61B6/00

CPC classification number: H01J35/065 ,  A61B6/02 ,  A61B6/025 ,  A61B6/4007 ,  A61B6/502 ,  H01J35/08 ,  H01J2235/068 ,  H01J2235/087 ,  H01J2235/088

Abstract: An X-ray includes: electron emission devices that are arranged in one dimension or in two dimensions and are configured to emit electrons; and an anode electrode configured to emit an X-ray by using the electrons emitted by the electron emission devices and comprising regions having irregular thicknesses.

公开(公告)号：US09741524B2

公开(公告)日：2017-08-22

申请号：US14882607

申请日：2015-10-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Junya Kawase

IPC: H01J35/00 ,  H01J35/18

CPC classification number: H01J35/18 ,  H01J2235/087 ,  H01J2235/186

Abstract: Heat dissipation of a target is enhanced in a transmissive X-ray generating apparatus where an anode member constitutes a part of a container. An anode member configured to hold a target is divided into an outer anode member, which is configured to hold the target and is connected to a container, and an inner anode member, which is joined to an insulating tube and is closer to an electron emitting portion than the outer anode member is. The outer circumferential surface of the inner anode member is joined to the outer anode member via a joining member. Heat generated by the electron emitting portion is dissipated mainly from the inner anode member via the insulating tube, or directly, to an insulating liquid.

公开(公告)号：US09653247B2

公开(公告)日：2017-05-16

申请号：US14490516

申请日：2014-09-18

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Huaping Tang ,  Chuanxiang Tang ,  Huaibi Chen ,  Wenhui Huang ,  Huayi Zhang ,  Shuxin Zheng ,  Jinsheng Liu

IPC: H01J35/06 ,  H01J35/02 ,  G21K1/087 ,  H01J35/14 ,  H01J35/04 ,  H01J35/10

CPC classification number: H01J35/025 ,  G21K1/087 ,  H01J35/02 ,  H01J35/045 ,  H01J35/06 ,  H01J35/10 ,  H01J35/14 ,  H01J2235/062 ,  H01J2235/068 ,  H01J2235/086 ,  H01J2235/087

Abstract: A two dimensional array distributed x-ray apparatus of this disclosure includes: a vacuum box which is sealed at its periphery, where the interior thereof is high vacuum; a plurality of electron transmitting units arranged in one plane in a two dimensional array on the wall of the vacuum box; an anode having targets corresponding to the plurality electron transmitting unit arranged in parallel with the plane of the plurality of electron transmitting units in the vacuum box; a power supply and control system having a high voltage power supply connected to the anode, a filament power supply connected to each of the plurality of the electron transmitting units, and a grid-controlled apparatus connected to each of the plurality of electron transmitting units; and a control system for controlling each power supply.

公开(公告)号：US09589759B2

公开(公告)日：2017-03-07

申请号：US14614781

申请日：2015-02-05

Applicant: SHIMADZU CORPORATION

Inventor： Akihiro Miyaoka

IPC: H01J35/02 ,  H01J35/16 ,  H01J1/88 ,  H01J19/56 ,  H01J37/16 ,  H05G1/04 ,  A61B6/00 ,  H01J5/02 ,  H01J1/40 ,  H01J5/04 ,  H01J35/04 ,  H05G1/02 ,  H01J35/14 ,  H01J35/28

CPC classification number: H01J35/16 ,  A61B6/40 ,  A61B6/44 ,  A61B2560/0406 ,  H01J1/40 ,  H01J1/88 ,  H01J5/02 ,  H01J5/04 ,  H01J19/56 ,  H01J35/02 ,  H01J35/04 ,  H01J35/14 ,  H01J35/28 ,  H01J37/16 ,  H01J2235/083 ,  H01J2235/087 ,  H01J2235/16 ,  H01J2235/163 ,  H01J2235/186 ,  H05G1/02 ,  H05G1/04

Abstract: An X-ray generator is provided using a transmission type target having a long life span, where it is possible to change the point for generating X-rays on the surface of the target while maintaining the vacuum chamber in a high vacuum state. A portion of a vacuum chamber 1 that includes a target 2 is linked to a main body portion 1a of the chamber through a linking member 5 as a movable chamber portion 1b. A fixed anode 12 is provided between the target 2 and the electrode 10 at the final stage from among a group of electrodes 8, 9 and 10 for electrostatically accelerating and converging electrons from an electron source 7 and is fixed to the main body portion 1a of the chamber in order to prevent the form of the electrical field from changing when the movable chamber portion 1b is shifted.

Abstract translation: 使用寿命长的透射型靶设置X射线发生器，能够在将真空室保持在高真空状态的同时，改变在靶表面产生X射线的点。 包括目标2的真空室1的一部分通过作为可移动室部分1b的连接构件5连接到室的主体部分1a。 在一组电极8,9和10之间，在靶2和电极10之间设置固定阳极12，用于从电子源7静电加速和会聚电子，并固定到电极10的主体部分1a 该室为了防止当可动室部分1b移动时电场的形式改变。

公开(公告)号：US09554767B2

公开(公告)日：2017-01-31

申请号：US15018792

申请日：2016-02-08

Applicant: Triple Ring Technologies, Inc.

Inventor： Tobias Funk ,  Steve Denis Burion ,  Kate LeeAnn Bechtel ,  Joseph Anthony Heanue ,  Brian Patrick Wilfley ,  Augustus Percival Lowell

IPC: G01N23/04 ,  A61B6/00 ,  H01J35/08 ,  H01J35/14 ,  A61B6/10

CPC classification number: A61B6/542 ,  A61B6/107 ,  A61B6/4028 ,  A61B6/4035 ,  A61B6/405 ,  A61B6/4241 ,  A61B6/461 ,  A61B6/469 ,  A61B6/487 ,  A61B6/504 ,  A61B6/5258 ,  A61B6/54 ,  H01J35/08 ,  H01J35/14 ,  H01J2235/087

Abstract: The present invention pertains to an apparatus and method for adaptive exposure in imaging systems. An x-ray source for producing x-ray radiation and an x-ray detector for measuring amount of x-ray radiation passing through the human patient and striking the detector can be used. A tomographic image of the human patient or a tomosynthetic image of the human patient can be generated. Region of interest filtering and equalization filtering can be utilized. Filtering can be accomplished with a mechanical shield or shutter or with electronic control of the x-ray source.

Abstract translation: 本发明涉及一种用于成像系统中自适应曝光的装置和方法。 可以使用用于产生x射线辐射的X射线源和用于测量穿过人类患者并撞击检测器的x射线辐射量的x射线检测器。 可以产生人类患者的断层图像或人类患者的断层合成图像。 可以利用感兴趣区域滤波和均衡滤波。 可以用机械屏蔽或快门进行过滤，也可以通过x射线源的电子控制来实现。

公开(公告)号：US20160372298A1

公开(公告)日：2016-12-22

申请号：US15121437

申请日：2015-03-05

Applicant: ADAPTIX LIMITED

Inventor： Mark Evans ,  Robert Stevens ,  Gil Travish

IPC: H01J35/30 ,  H01J35/06

CPC classification number: H01J35/30 ,  A61B6/4007 ,  H01J35/065 ,  H01J2235/068 ,  H01J2235/087

Abstract: An x-ray generator may include a plurality of electron field emitters; a target material; a plurality of energisable solenoid coils; and an electronic power and timing circuit. The generator may provide electrical current to at least one individual solenoid coil to create a magnetic field to cause the path of electrons emitted from the emitter closest to the energised solenoid coil to be defocused and/or deflected before the electrons reach the target material. The target material may comprise a low atomic number material and a high atomic number material, the high atomic number material being arranged in a regular pattern, such that, in use, the electrons may be aimed at either the high or the low atomic number material.

Abstract translation: X射线发生器可以包括多个电子场发射器; 目标材料; 多个可激励电磁线圈; 以及电子功率和定时电路。 发电机可以向至少一个单独的螺线管线圈提供电流以产生磁场，以在电子到达目标材料之前使从最靠近激励螺线管线圈的发射器发射的电子的路径散焦和/或偏转。 目标材料可以包括低原子序数材料和高原子序数材料，高原子序数材料以规则图案排列，使得在使用中，电子可以瞄准高原子数或低原子序数材料 。