公开(公告)号：US20170133192A1

公开(公告)日：2017-05-11

申请号：US15411867

申请日：2017-01-20

Applicant: CANON KABUSHIKI KAISHA

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

IPC: H01J35/08 ,  H01J35/18 ,  G01N23/04

CPC classification number: H01J35/08 ,  G01N23/04 ,  G01N23/043 ,  H01J35/116 ,  H01J35/16 ,  H01J35/18 ,  H01J35/186 ,  H01J2235/168

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.

公开(公告)号：US09615438B2

公开(公告)日：2017-04-04

申请号：US14758484

申请日：2013-11-21

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun Kang ,  Chuanxiang Tang ,  Ziran Zhao ,  Zhe Zhang

IPC: H01J35/04 ,  H05G1/10 ,  H01J35/06 ,  H01J35/08 ,  G01N23/04 ,  A61B6/03 ,  A61B6/00

CPC classification number: H05G1/10 ,  A61B6/032 ,  A61B6/40 ,  A61B6/4064 ,  G01N23/046 ,  G01N2223/308 ,  G01N2223/419 ,  H01J35/06 ,  H01J35/08 ,  H01J2235/086

Abstract: CT devices and methods thereof are disclosed. The CT device comprises a circular electron beam emission array including a plurality of electron beam emission units that are distributed uniformly along a circle, wherein each electron beam emission unit emits electron beams that are substantially parallel to an axis of the circular electron beam emission array in sequence under the control of a control signal; a circular reflection target which is disposed to be coaxial with the circular electron beam emission array, wherein the electron beams bombard the circular reflection target to generate X-rays that intersect the axis of the circular electron beam emission array; and a circular detector array which is disposed to be coaxial with the circular reflection target and configured to include a plurality of detection units which receive the X-rays after they have passed through an object to be detected.

公开(公告)号：US09570264B2

公开(公告)日：2017-02-14

申请号：US14241417

申请日：2012-08-29

Applicant: Takao Ogura ,  Yasue Sato

Inventor： Takao Ogura ,  Yasue Sato

IPC: H01J35/02 ,  H01J35/08 ,  G01N23/04 ,  H01J35/14

CPC classification number: H01J35/02 ,  G01N23/04 ,  H01J35/08 ,  H01J35/14 ,  H01J2235/087 ,  H01J2235/186

Abstract: Provided is an X-ray generator which includes:an electron path 8; a target 9c disposed on a substrate 9a, in which electrons having passed through the electron path 8 are made to emit at the target 9c and to generate an X-ray, wherein: the target 9c is disposed at the central area of the substrate 9a; at least a part of a peripheral area of the substrate 9a which is not covered with the target 9c has higher transmittance than that of the central area of the substrate 9a covered with the target 9c, with respect to the X-ray generated when electrons having reflected from the target enter an inner wall of the electron path. X-ray generation efficiency may be improved by effectively using electrons reflected off the target 9c.

Abstract translation: 电子通路8; 设置在基板9a上的目标9c，其中通过电子通道8的电子在靶9c处发射并产生X射线，其中：靶9c设置在基板9a的中心区域 ; 基板9a的未被靶9c覆盖的周边区域的至少一部分相对于被靶9c覆盖的基板9a的中心区域的透射率的透射率高于电子具有的X射线 从目标反射进入电子通道的内壁。 可以通过有效地使用从靶9c反射的电子来提高X射线产生效率。

公开(公告)号：US20170027531A1

公开(公告)日：2017-02-02

申请号：US15039658

申请日：2014-09-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takashi Shiozawa ,  Kazuyuki Ueda ,  Kazuya Tsujino ,  Nobuhiro Ito

IPC: A61B6/10 ,  A61B6/04 ,  H01J35/06 ,  H01J35/16 ,  H01J35/08 ,  A61B6/02 ,  A61B6/00

CPC classification number: A61B6/107 ,  A61B6/025 ,  A61B6/0414 ,  A61B6/4007 ,  A61B6/405 ,  A61B6/42 ,  A61B6/502 ,  H01J35/06 ,  H01J35/08 ,  H01J35/16 ,  H01J2235/068 ,  H01J2235/087

Abstract: A radiographic apparatus includes a target array and an X-ray detecting unit. The target array includes a plurality of targets and a forward shielding member. The X-ray detecting unit includes a detecting portion. The X-ray detecting unit further includes a shielding portion extending toward an outer side of the detecting portion along an array direction in which the targets are arrayed.

Abstract translation: 射线照相设备包括目标阵列和X射线检测单元。 目标阵列包括多个目标和前向屏蔽部件。 X射线检测单元包括检测部。 X射线检测单元还包括沿着排列靶的排列方向朝向检测部的外侧延伸的遮蔽部。

公开(公告)号：US09530607B2

公开(公告)日：2016-12-27

申请号：US14457385

申请日：2014-08-12

Applicant: EXCILLUM AB

Inventor： Oscar Hemberg ,  Tomi Tuohimaa ,  Mikael Otendal

IPC: H01J35/02 ,  H01J35/08 ,  G03F7/20 ,  H01J35/12 ,  H05G2/00

CPC classification number: H01J35/08 ,  G03F7/70033 ,  H01J35/12 ,  H01J2235/082 ,  H01J2235/1204 ,  H01J2235/1279 ,  H05G2/003 ,  H05G2/008

Abstract: Closed-loop circulation for providing liquid metal to an interaction region at which an electron beam is to impact upon the liquid metal to produce X-rays is presented. In a method, the pressure of the liquid metal is raised to at least 10 bar using a high-pressure pump. The pressurized liquid metal is then conducted to a nozzle and ejected into a vacuum chamber in the form of a spatially continuous jet. After passage through the vacuum chamber, the liquid metal is collected in a collection reservoir, and the pressure of the liquid metal is raised to an inlet pressure, e.g. using a primer pump, suitable for the inlet of the high-pressure pump. Also, a corresponding circulation system and an X-ray source provided with such circulation system.

Abstract translation: 提出了用于将液体金属提供到电子束将冲击液态金属以产生X射线的相互作用区域的闭环循环。 在一种方法中，使用高压泵将液态金属的压力提高至至少10巴。 然后将加压液体金属传导到喷嘴并以空间连续射流的形式喷射到真空室中。 在通过真空室之后，将液态金属收集在收集容器中，并且将液态金属的压力升高到入口压力，例如， 使用底漆泵，适用于高压泵的入口。 另外，具有这样的循环系统的相应的循环系统和X射线源。

公开(公告)号：US09508523B2

公开(公告)日：2016-11-29

申请号：US14214811

申请日：2014-03-15

Applicant: Mark F Eaton ,  Mark Lucente

Inventor： Mark F Eaton ,  Mark Lucente

IPC: H01J35/08 ,  G21K1/02

CPC classification number: H01J35/08 ,  G21K1/02 ,  H01J2235/086 ,  H01J2235/18

Abstract: This invention provides a source of x-ray flux in which x-rays are produced by e-beams impacting the inner walls of holes or channels formed in a metal anode such that most of the electrons reaching the channel impact an upper portion of said channel. A portion of the electrons from this primary impact will generate x-rays. Most of the electrons scatter but they continue to ricochet down the channel, most of them generating x-rays, until the beam is spent. A single channel source of high power efficiency and high power level x-rays may be made in this way, or the source can be of an array of such channels, to produce parallel collimated flux beams of x-rays.

Abstract translation: 本发明提供一种X射线通量的源，其中通过撞击在金属阳极中形成的孔或通道的内壁的电子束产生X射线，使得到达通道的大部分电子冲击所述通道的上部 。 来自该主要冲击的电子的一部分将产生x射线。 大多数电子散射，但是它们继续向下流动通道，大多数电子产生X射线，直到光束消耗。 可以以这种方式制造高功率效率和高功率级X射线的单通道源，或者源可以是这种通道的阵列，以产生平行准直的X射线束。

公开(公告)号：US09484178B2

公开(公告)日：2016-11-01

申请号：US14687749

申请日：2015-04-15

Applicant: CANON KABUSHIKI KAISHA

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

IPC: H01J35/08 ,  H01J35/16 ,  G21K1/02 ,  H05G1/06

CPC classification number: H01J35/08 ,  G21K1/02 ,  H01J35/16 ,  H01J2235/081 ,  H01J2235/087 ,  H01J2235/166 ,  H05G1/06

Abstract: The target includes a target layer configured to be irradiated with an electron to generate an X-ray and a support substrate configured to support the target layer. The support substrate includes a polycrystalline diamond and includes multiple structure planes having different area densities of plane orientations from one another. The target layer is supported by the support substrate at a structure plane with a smaller area density of the {101} plane than the area density of the {100} plane and the area density of the {111} plane.

Abstract translation: 目标包括配置为用电子照射以产生X射线的目标层和被配置为支撑目标层的支撑衬底。 支撑衬底包括多晶金刚石，并且包括具有彼此的平面取向的不同面积密度的多个结构平面。 目标层在{101}面的面积密度比{100}面的面积密度和{111}面的面积密度小的结构面支撑在支撑基板上。

公开(公告)号：US20160307725A1

公开(公告)日：2016-10-20

申请号：US15074859

申请日：2016-03-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo JEONG ,  Yoon-Ho SONG

IPC: H01J35/14 ,  H01J35/06

CPC classification number: H01J35/065 ,  H01J35/08

Abstract: An X-ray tube includes a cathode including an emitter emitting an electron beam, an anode at which a target material is disposed, the target material emitting an X-ray by colliding with the electron beam, and an insulating spacer isolating the anode, wherein the cathode or the anode is disposed between the emitter and the insulating spacer.

Abstract translation: X射线管包括阴极，其包括发射电子束的发射体，设置有靶材料的阳极，与电子束碰撞而发射X射线的靶材料和隔离阳极的绝缘隔离物，其中 阴极或阳极设置在发射极和绝缘间隔物之间​​。

公开(公告)号：US20160266054A1

公开(公告)日：2016-09-15

申请号：US15031657

申请日：2014-10-23

Applicant: NANOVISION TECHNOLOGY (BEIJING) CO., LTD

Inventor： Hongguang CAO ,  Yunxiang LI ,  Hailiang ZHENG

IPC: G01N23/083 ,  A61B6/00 ,  G21K1/02 ,  A61B6/03 ,  G01N23/04 ,  G21K1/06

CPC classification number: G01N23/083 ,  A61B6/03 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/484 ,  A61B6/502 ,  A61B6/52 ,  G01N23/046 ,  G01N23/087 ,  G01N2223/419 ,  G01N2223/501 ,  G01T1/24 ,  G01T1/247 ,  G01T1/36 ,  G21K1/02 ,  G21K1/025 ,  G21K1/06 ,  G21K2207/005 ,  H01J35/08 ,  H01J35/116 ,  H01J35/14

Abstract: A photon count-based radiation imaging system. The invention also relates to a method of implementing X-ray imaging in said system, and to key apparatus of said system. In the system, an x-ray source directs x-rays at a sample on a scanning platform. When the x-rays pass through said sample, photons carrying information about characteristics of the material at various spatial positions are produced. A photon count detector counts the photons on an imaging plane, obtains incident photon projection data and energy data, and transmits same to a 3D reconstruction system. The 3D reconstruction system reconstructs, on the basis of said projection data and energy data, the 3D structure and the matter composition inside the sample, then performs digital dyeing on the component parts of the sample, thereby differentiating the matter composition of the sample.

Abstract translation: 基于光子计数的辐射成像系统。 本发明还涉及在所述系统中实现X射线成像的方法以及所述系统的关键装置。 在系统中，x射线源将X射线引导到扫描平台上的样本。 当x射线通过所述样品时，产生携带关于材料在各种空间位置的特性的信息的光子。 光子计数检测器对成像平面上的光子进行计数，获得入射光子投影数据和能量数据，并将其传输到3D重建系统。 3D重建系统基于所述投影数据和能量数据重建样本内的3D结构和物质组成，然后对样品的组成部分进行数字染色，从而区分样品的物质组成。

公开(公告)号：US20160247656A1

公开(公告)日：2016-08-25

申请号：US15147394

申请日：2016-05-05

Applicant: Excillum AB

Inventor： Oscar HEMBERG ,  Tomi TUOHIMAA ,  Björn SUNDMAN

IPC: H01J35/14 ,  H01J35/08

CPC classification number: H01J35/14 ,  H01J35/08 ,  H01J2235/082 ,  H05G1/52

Abstract: A technique for indirectly measuring the degree of alignment of a beam in an electron-optical system including aligning means, focusing means and deflection means. To carry out the measurements, a simple sensor may be used, even a single-element sensor, provided it has a well-defined spatial extent. When practiced in connection with an X-ray source which is operable to produce an X-ray target, further, a technique for determining and controlling a width of an electron-beam at its intersection point with the target.