公开(公告)号：US11791123B2

公开(公告)日：2023-10-17

申请号：US17712639

申请日：2022-04-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yoon-Ho Song ,  Jun-Tae Kang ,  Jae-Woo Kim ,  Jin-Woo Jeong

IPC: H01J35/16 ,  H01J35/06 ,  H01J35/04

CPC classification number: H01J35/16 ,  H01J35/045 ,  H01J35/064

Abstract: Provided is an X-ray tube which includes a first electrode, a second electrode spaced apart from the first electrode, a target disposed in a lower portion of the second electrode, an emitter on the first electrode, a third electrode which is positioned between the first electrode and the second electrode and includes an opening at a position perpendicularly corresponding to the emitter, and a spacer provided on the third electrode and surrounding the second electrode. The spacer includes a first section located adjacent to the third electrode and a second section disposed on the first section. The spacer includes a ceramic insulator and conductive dopants dispersed within the ceramic insulator. A concentration of the conductive dopants in the first section of the spacer is greater than a concentration of the conductive dopants in the second section. The third electrode is in contact with the first section of the spacer.

公开(公告)号：US11771388B2

公开(公告)日：2023-10-03

申请号：US18106286

申请日：2023-02-06

Applicant: VARIAN MEDICAL SYSTEMS, INC.

Inventor： Arundhuti Ganguly ,  Gary F. Virshup ,  Michelle Richmond ,  Billy Dan Jones

IPC: A61B6/00 ,  H05G1/58 ,  G21K1/10 ,  H05G1/60 ,  H01J35/04 ,  G01N23/04 ,  A61B6/04 ,  G01N23/00

CPC classification number: A61B6/484 ,  A61B6/482 ,  G21K1/10 ,  H05G1/58 ,  H05G1/60 ,  A61B6/04 ,  A61B6/50 ,  A61B6/54 ,  G01N23/00 ,  G01N23/04 ,  H01J35/045

Abstract: A system can have an x-ray source that generates a series of individual x-ray pulses for multi-energy imaging. A first x-ray pulse can have a first energy level and a subsequent second x-ray pulse in the series can have a second energy level different from the first energy level. An x-ray imager can receive the x-rays from the x-ray source and can detect the received x-rays for image generation. A generator interface box (GIB) controls the x-ray source to provide the series of individual x-ray pulses and synchronizes detection by the x-ray imager with generation of the individual x-ray pulses. The GIB can control x-ray pulse generation and synchronization to optimize image generation while minimizing unnecessary x-ray irradiation.

公开(公告)号：US20190214216A1

公开(公告)日：2019-07-11

申请号：US16358370

申请日：2019-03-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo JEONG ,  Yoon-Ho SONG

IPC: H01J35/06 ,  H01J35/04

CPC classification number: H01J35/065 ,  H01J35/045 ,  H01J35/16 ,  H01J2235/168

Abstract: Disclosed is an X-ray source, including: a cathode; an anode positioned on the cathode so as to face the cathode; emitters formed on the cathode; a gate electrode positioned between the cathode and the anode and including openings at positions corresponding to those of the emitters; an insulating spacer formed between the gate and the anode; and a coating layer formed on an internal wall of the insulating spacer, and including a material having a lower secondary electron emission coefficient than that of the insulating spacer.

公开(公告)号：US20180247787A1

公开(公告)日：2018-08-30

申请号：US15904820

申请日：2018-02-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo JEONG ,  Yoon-Ho SONG ,  Jun Tae KANG ,  Jae-Woo KIM

IPC: H01J35/14 ,  G21K1/02 ,  H05G1/52 ,  H01J35/06 ,  H01J35/16

CPC classification number: H01J35/14 ,  G21K1/02 ,  H01J35/045 ,  H01J35/06 ,  H01J35/16 ,  H01J2235/062 ,  H01J2235/16 ,  H05G1/52

Abstract: Provided is an X-ray source including a vacuum closed tube. The X-ray source includes a high voltage connection module, a tube module, and a magnetic lens system into which the tube module is inserted. The tube module includes a vacuum closed tube. The vacuum closed tube includes a cathode electrode provided at one end thereof, a nano-emitter on the cathode electrode, an anode electrode provided at the other end, and a first insulation spacer provided between the cathode electrode and the anode electrode. In addition, the vacuum closed tube includes a first conductive tube and a second conductive tube both provided between the cathode electrode and the anode electrode and separated from each other by the first insulation spacer, and a first collimator block covering an inner surface of the first insulation spacer and having a first opening.

公开(公告)号：US09953799B2

公开(公告)日：2018-04-24

申请号：US14668029

申请日：2015-03-25

Applicant: NIKON CORPORATION ,  NIKON METROLOGY NV

Inventor： Fumihiko Hakoda ,  Satoshi Takahashi ,  Jim Smith

IPC: H01J35/16 ,  G01N23/04 ,  H01J35/04 ,  B22D46/00 ,  G21K7/00 ,  H05G1/02 ,  G01N23/02 ,  H01J9/42

CPC classification number: H01J35/16 ,  B22D46/00 ,  G01N23/02 ,  G01N23/04 ,  G21K7/00 ,  H01J9/42 ,  H01J35/04 ,  H01J35/045 ,  H01J2235/163 ,  H05G1/02

Abstract: Provided is an X-ray apparatus including: a target configured to generate an X-ray by collision of electrons or transmission of electrons; a filament configured to release the electrons to the target; a housing that has the filament therein; and a first holding member configured to hold a portion of the target disposed on an outer side of the housing on the outer side of the housing.

公开(公告)号：US20170287668A1

公开(公告)日：2017-10-05

申请号：US15432272

申请日：2017-02-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshihiro Yanagisawa

IPC: H01J35/04 ,  H01J35/06 ,  H05G1/30 ,  H01J35/08

CPC classification number: H01J35/045 ,  H01J35/06 ,  H01J35/08 ,  H01J35/116 ,  H01J2235/1258 ,  H05G1/30

Abstract: Provided is an X-ray generating tube including an electron gun, which includes a grid electrode secured to a support member. In the X-ray generating tube, thermal stress generated at a joining portion between the support member and the grid electrode is reduced, to thereby maintain a position of an electron beam on a target irradiated with the electron beam accurately for a long time. A grid electrode and a support member are secured to each other via a buffer member, which has an elastic coefficient that is lower than elastic coefficients of the grid electrode and the support member, and which is joined to the grid electrode and the support member through a first joining portion on the grid electrode side and a second joining portion on the support member side, respectively.

公开(公告)号：US09412552B2

公开(公告)日：2016-08-09

申请号：US14337590

申请日：2014-07-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Shuji Aoki ,  Kazuyuki Ueda

IPC: H01J35/02 ,  H01J35/04 ,  H01J35/06 ,  H01J35/08 ,  H01J35/16 ,  G01N23/04

CPC classification number: H01J35/045 ,  G01N23/04 ,  H01J35/06 ,  H01J35/065 ,  H01J35/08 ,  H01J35/16 ,  H01J2235/164

Abstract: In a multi-source radiation generating apparatus including a plurality of combinations of a cathode and a target, an extraction electrode is disposed for a plurality of cathodes in common. When a potential of the extraction electrode is constant, potentials for the cathodes are selectively switched between a cutoff potential which is higher than the potential of the extraction electrode and an emission potential which is lower than the potential of the extraction electrode.

Abstract translation: 在包括阴极和靶的多个组合的多源辐射发生装置中，为多个阴极共同设置引出电极。 当提取电极的电位恒定时，阴极的电位在高于引出电极的电位的截止电位和低于引出电极的电位的发射电位之间选择性地切换。

公开(公告)号：US09158030B2

公开(公告)日：2015-10-13

申请号：US14508464

申请日：2014-10-07

Applicant: Rapiscan Systems, Inc.

Inventor： Edward James Morton

IPC: A61B6/00 ,  G01V5/00 ,  G01N23/04 ,  H01J35/04 ,  G01N23/203 ,  G01N24/08 ,  A61B6/02 ,  A61B6/03

CPC classification number: G01V5/0033 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4028 ,  A61B6/4035 ,  A61B6/4241 ,  A61B6/4488 ,  A61B6/482 ,  A61B6/505 ,  G01N23/04 ,  G01N23/046 ,  G01N23/203 ,  G01N24/084 ,  G01N2223/419 ,  G01V5/005 ,  G21K1/025 ,  H01J35/045

Abstract: The present invention provides for an improved scanning process with a stationary X-ray source arranged to generate X-rays from a plurality of X-ray source positions around a scanning region, a first set of detectors arranged to detect X-rays transmitted through the scanning region, and at least one processor arranged to process outputs from the first set of detectors to generate tomographic image data. The X-ray screening system is used in combination with other screening technologies, such as NQR-based screening, X-ray diffraction based screening, X-ray back-scatter based screening, or Trace Detection based screening.

Abstract translation: 本发明提供了一种改进的扫描过程，其中固定的X射线源设置成从围绕扫描区域的多个X射线源位置产生X射线，第一组检测器布置成检测透过扫描区域的X射线 扫描区域和至少一个处理器，其被布置成处理来自第一组检测器的输出以产生断层图像数据。 X射线筛选系统与其他筛选技术结合使用，例如基于NQR筛选，基于X射线衍射的筛选，基于X射线背散射筛选或基于Trace Detection的筛选。

公开(公告)号：US20150162161A1

公开(公告)日：2015-06-11

申请号：US14559807

申请日：2014-12-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Shuji Yamada ,  Takeo Tsukamoto ,  Takao Ogura ,  Tadayuki Yoshitake ,  Yoichi Ikarashi

IPC: H01J35/08 ,  H01J35/04 ,  G01N23/04

CPC classification number: H01J35/08 ,  C23C16/01 ,  C23C16/27 ,  G01N23/04 ,  H01J35/045 ,  H01J2235/02 ,  H01J2235/081 ,  H01J2235/084 ,  H01J2235/087 ,  H01J2235/186

Abstract: A transmissive-type target includes a target layer, and a transmissive substrate configured to support the target layer. The transmissive substrate has a pair of surfaces facing each other and is formed of polycrystalline diamond. In the transmissive substrate, one of the pair of surfaces includes polycrystalline diamond having a first average crystal grain diameter which is smaller than a second average crystal grain diameter of polycrystalline diamond included on the other surface opposing thereto. The target layer is supported by any one of the pair of surfaces.

Abstract translation: 透射型靶包括目标层和被配置为支撑目标层的透射基板。 透射基板具有彼此面对的一对表面，并且由多晶金刚石形成。 在透射基板中，一对表面中的一个表面包括具有第一平均晶粒直径的多晶金刚石，其小于与其相对的另一表面所包含的多晶金刚石的第二平均晶粒直径。 目标层由一对表面中的任何一个支撑。

公开(公告)号：US20150078511A1

公开(公告)日：2015-03-19

申请号：US14490509

申请日：2014-09-18

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Chuanxiang TANG ,  Huaping TANG ,  Huaibi CHEN ,  Wenhui HUANG ,  Huayi ZHANG ,  Shuxin ZHENG ,  Yaohong LIU ,  Jinsheng LIU

IPC: H01J35/04 ,  G01N23/04 ,  H01J35/14 ,  H01J35/16 ,  H01J35/10 ,  H01J35/06

CPC classification number: H01J35/045 ,  G01N23/046 ,  H01J35/06 ,  H01J35/065 ,  H01J35/10 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/087

Abstract: A x-ray apparatus of the present application comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units arranged in a linear array and installed on the wall at one end within the vacuum box, each electron transmitting unit is independent to each other; the electron transmitting unit having: a heating filament; a cathode connected to the heating filament; a grid arranged above the cathode opposing the cathode; anode made of metal and installed at the other end of the vacuum box, and in the direction of length, the anode is parallel to the plane of the grid of the electron transmitting unit, and in the direction of width, the anode has a predetermined angle with respect to the plane of the grid of the electron transmitting unit.

Abstract translation: 本申请的X射线装置包括：真空箱，其外周密封，其内部为高真空; 多个电子传输单元，其布置成直线阵列，并且一端安装在真空箱内的壁上，每个电子传输单元彼此独立; 电子发射单元具有：加热丝; 连接到加热丝的阴极; 布置在与阴极相对的阴极上方的栅极; 阳极由金属制成并安装在真空箱的另一端，并且在长度方向上，阳极平行于电子发射单元的栅格平面，并且在宽度方向上，阳极具有预定的 相对于电子发送单元的格栅的平面的角度。