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公开(公告)号：US10014147B2
公开(公告)日：2018-07-03
申请号：US14469724
申请日：2014-08-27
Applicant: Futaba Corporation , Hamamatsu Photonics Kabushiki Kaisha
Inventor： Akira Matsumoto , Kiyoyuki Deguchi , Yuuichi Kogure , Kazuhito Nakamura , Tomoyuki Okada , Toru Fujita , Tatsuya Nakamura
CPC classification number: H01J35/045 , H01J35/04 , H01J35/06 , H01J35/116 , H01J35/16 , H01J35/18 , H01J35/186
Abstract: Provided is an X-ray tube which can perform stable X-ray radiation under a desired condition in a radiation region extending in a predetermined direction. Included are a base plate having an opening portion and made of alloy 426, an X-ray transmission window made of titanium foil and arranged to close the opening portion of the base plate, a flat box-like vessel portion attached to the base plate and inside of which is in a vacuum state, an X-ray target provided at the opening portion in the vessel portion, and an electron source injecting electrons to the X-ray target in the vessel portion. The electron source includes a liner cathode, a first control electrode pulling out electrons from the cathode and a second control electrode restricting radiation range of the pulled-out electrons. At this time, X-rays emitted from the X-ray window spreads radially from opening shape of the opening portion.
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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
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.
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公开(公告)号：US09508522B2
公开(公告)日：2016-11-29
申请号：US14207216
申请日：2014-03-12
Applicant: Samsung Electronics Co., Ltd. , SRI INTERNATIONAL
Inventor： Shang-hyeun Park , Paul R. Schwoebel , Il-hwan Kim , Do-yoon Kim , Yong-chul Kim , Chang-soo Lee , Tae-won Jeong
IPC: H01J35/06 , H01J35/04 , H01J19/44 , H01J3/02 , H01J3/38 , H01J1/30 , H01J1/90 , A61B6/00 , H01J1/304 , H01J19/24 , H01J19/42 , B82Y30/00
CPC classification number: H01J35/065 , A61B6/40 , A61B6/4064 , A61B6/4488 , B82Y30/00 , H01J1/304 , H01J1/90 , H01J3/021 , H01J3/38 , H01J19/24 , H01J19/42 , H01J19/44 , H01J35/045 , H01J35/06 , H01J2201/304 , H01J2201/30469 , H01J2201/3195 , H01J2203/0204 , H01J2203/0208 , H01J2203/0212 , H01J2203/0216 , H01J2203/0236 , H01J2235/06 , H01J2235/1212 , H01J2235/1291 , H01J2235/1295 , Y10S977/742 , Y10S977/939 , Y10S977/95
Abstract: An x-ray generator includes a housing, a cathode block that is arranged in the housing and emits electrons via a field emission scheme, an anode block that is arranged in the housing and generates x-rays in response to the electrons emitted from the cathode block and collide with the anode block, and a heat sink block that contacts the cathode block and dissipates heat generated therein to an outside of the housing.
Abstract translation: X射线发生器包括壳体，阴极块，其布置在壳体中并经由场致发射方案发射电子;阳极块，布置在壳体中并响应于从阴极发射的电子产生X射线 阻挡并与阳极块碰撞，以及散热块，其接触阴极块并将其中产生的热量散发到壳体的外部。
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公开(公告)号：US09490099B2
公开(公告)日：2016-11-08
申请号：US14463881
申请日：2014-08-20
Applicant: Wisconsin Alumni Research Foundation
Inventor： Thomas R. Mackie , Brandon J. Walker , Jonathon R. Seaton
IPC: H01J35/30 , H01J35/04 , A61B6/03 , A61B6/00 , H01J35/06 , H01J35/12 , H01J35/14 , A61B6/06 , H01J35/00
CPC classification number: H01J35/14 , A61B6/032 , A61B6/035 , A61B6/06 , A61B6/40 , A61B6/4007 , A61B6/4014 , A61B6/4021 , A61B6/405 , A61B6/4488 , A61B6/482 , A61N5/1077 , H01J35/00 , H01J35/045 , H01J35/06 , H01J35/12 , H01J35/30 , H01J2235/068 , H01J2235/1204 , H01J2235/1262 , H01J2235/127
Abstract: An imaging module includes a plurality of cathodes and respective gates, each cathode configured to generate a separate beam of electrons directed across a vacuum chamber and each gate matched to at least one respective cathode to enable and disable each separate beam of electrons from being directed across the vacuum chamber. A target anode is fixed within the vacuum chamber and arranged to receive the separate beam of electrons from each of the plurality of cathodes and, therefrom, generate a beam of x-rays. A deflection system is arranged between the plurality of cathodes and the target anode to generate a variable magnetic field to control a path followed by each of the separate beams of electrons to the target anode.
Abstract translation: 成像模块包括多个阴极和相应的栅极，每个阴极被配置为产生跨过真空室的单独的电子束，并且每个栅极与至少一个相应的阴极匹配，以使得能够使每个分离的电子束不被引导穿过 真空室。 目标阳极固定在真空室内并被布置成从多个阴极中的每一个接收独立的电子束，并且由此产生一束x射线。 偏转系统布置在多个阴极和目标阳极之间以产生可变磁场，以控制随着每个单独的电子束到目标阳极的路径。
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85.发明授权X-ray generator having multiple extractors with independently selectable potentials 有权X射线发生器具有多个提取器，具有独立可选择的电位公开(公告)号：US09448327B2
公开(公告)日：2016-09-20
申请号：US14108244
申请日：2013-12-16
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Luke Perkins
CPC classification number: G01V5/12 , H01J35/04 , H01J35/045 , H01J35/30
Abstract: A logging tool is for determining a property of a subsurface formation having a borehole therein and includes a housing to fit within the borehole. An x-ray generator is carried by the housing and includes at least three extractor electrodes, an electron emitter to emit electrons toward the extractor electrodes, and a target downstream of the extractor electrodes. The extractor electrodes have independently selectable potentials so as to allow direction of an electron beam, formed from the electrons emitted by the electron emitter, toward different longitudinal and lateral regions of the target, the target to emit x-rays into the subsurface formation when struck by the electron beam. A radiation detector is carried by the housing to detect incoming radiation resulting from interactions between the x-rays and the subsurface formation. Processing circuitry is coupled to the radiation detector to determine the property of the subsurface formation based upon detected incoming radiation.
Abstract translation: 测井工具用于确定其中具有钻孔的地下地层的特性，并且包括适合于钻孔内的壳体。 X射线发生器由壳体承载，并且包括至少三个提取器电极，向提取器电极发射电子的电子发射器，以及提取器电极下游的靶。 提取器电极具有可独立选择的电位，以允许由电子发射器发射的电子形成的电子束朝向目标的不同纵向和横向区域的方向，目标在被击打时将x射线发射到地下地层 通过电子束。 辐射检测器由壳体承载以检测由x射线和地下地层之间的相互作用产生的入射辐射。 处理电路耦合到辐射检测器，以基于检测到的入射辐射来确定地下地层的性质。
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Patent Agency Ranking
公开(公告)号：US20160148776A1
公开(公告)日：2016-05-26
申请号：US14943996
申请日：2015-11-17
Inventor： Jin Woo JEONG , Yoon Ho SONG , Jun Tae KANG , Jae Woo KIM
CPC classification number: H01J35/045 , H01J3/021 , H01J29/462 , H01J35/065 , H01J2203/0292
Abstract: Provided herein is a field emission device. The field emission device includes a cathode which is connected to a negative power supply and emits electrons, an anode which is connected to a positive power supply and includes a target material receiving the electrons emitted from the cathode, and a ground electrode which is formed to face the anode and has an opening through which the electrons emitted from the cathode pass. The ground electrode is grounded so that when an arc discharge occurs due to high voltage operation of the anode, electric charge produced by the arc discharge is emitted to a ground.
Abstract translation: 本文提供的是场致发射装置。 场致发射器件包括连接到负电源并发射电子的阴极，连接到正电源并包括接收从阴极发射的电子的靶材料的阳极和形成为 面对阳极并且具有从阴极发射的电子通过的开口。 接地电极接地，当由于阳极的高压运行而发生电弧放电时，由电弧放电产生的电荷被发射到地面。
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公开(公告)号：US09224572B2
公开(公告)日：2015-12-29
申请号：US13718672
申请日：2012-12-18
Applicant: General Electric Company
Inventor： Mark Alan Frontera , John Scott Price , Sergio Lemaitre , Yun Zou , Peter Andras Zavodszky
CPC classification number: H01J35/14 , H01J35/045
Abstract: An X-ray tube assembly is provided including an emitter configured to emit an electron beam, an emitter focusing electrode, an extraction electrode, and a downstream focusing electrode. The emitter focusing electrode is disposed proximate to the emitter and outward of the emitter in an axial direction. The extraction electrode is disposed downstream of the emitter and the emitter focusing electrode. The extraction electrode has a negative bias voltage setting at which the extraction electrode has a negative bias voltage with respect to the emitter. The downstream focusing electrode is disposed downstream of the extraction electrode, and has a positive bias voltage with respect to the emitter. When the extraction electrode is at the negative bias voltage setting, the electron beam is emitted from an emission area that is smaller than a maximum emission area from which electrons may be emitted.
Abstract translation: 提供了包括发射电子束的发射极，发射极聚焦电极，引出电极和下游聚焦电极的X射线管组件。 发射极聚焦电极在轴向方向上靠近发射极和发射极的外侧设置。 引出电极设置在发射极和发射极聚焦电极的下游。 提取电极具有负偏置电压设置，在该设置下，引出电极相对于发射极具有负偏置电压。 下游聚焦电极设置在引出电极的下游，并且相对于发射极具有正偏置电压。 当提取电极处于负偏置电压设置时，电子束从小于可从其发射电子的最大发射区域的发射区域发射。
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公开(公告)号：US09064670B2
公开(公告)日：2015-06-23
申请号：US13771736
申请日：2013-02-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： Il-hwan Kim , Do-yoon Kim , Yong-chul Kim , Shang-hyeun Park , Tae-won Jeong
CPC classification number: H01J29/025 , H01J3/021 , H01J35/045 , H01J35/065 , H01J2203/0216 , H01J2203/0236 , H01J2203/0244 , H01J2203/0272 , H01J2235/068
Abstract: An electron emission device includes a cathode electrode; a mesh-shaped gate electrode spaced apart from the cathode electrode; a plurality of gate spacers between the cathode electrode and the gate electrode; and a plurality of electron emission sources between the cathode electrode and the gate electrode, and alternating with the plurality of gate spacers.
Abstract translation: 电子发射装置包括阴极电极; 与阴极间隔开的网状栅电极; 在所述阴极电极和所述栅电极之间的多个栅极间隔物; 以及在所述阴极电极和所述栅电极之间的多个电子发射源，并且与所述多个栅极间隔物交替。
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公开(公告)号：US20150146848A1
公开(公告)日：2015-05-28
申请号：US14400703
申请日：2013-03-14
Applicant: THE GENERAL HOSPITAL CORPORATION
Inventor： Rajiv Gupta , Luis Fernando Velasquez-Garcia , Richard Lanza , Berthold KP Horn , Tayo Akinwande
CPC classification number: H01J35/065 , A61B6/032 , A61B6/40 , A61B6/4007 , A61B6/405 , A61B6/4405 , A61B6/484 , G01N23/04 , G01V5/0016 , G01V5/0041 , G21K2207/005 , H01J35/025 , H01J35/04 , H01J35/045 , H01J35/12 , H01J35/14 , H01J35/18 , H01J2201/30449 , H01J2235/062 , H01J2235/068 , H01J2235/087 , H01J2235/186
Abstract: Described here is a method for performing phase contrast imaging using an array of independently controllable x-ray sources. The array of x-ray sources can be controlled to produce a distinct spatial pattern of x-ray radiation and thus can be used to encode phase contrast signals without the need for a coded aperture. The lack of coded aperture increases the flexibility of the imaging method. For instance, because a fixed, coded aperture is not required, the angular resolution of the imaging technique can be increased as compared to coded-aperture imaging. Moreover, the lack of a radioopaque coded aperture increases the photon flux that reaches the subject, thereby increasing the attainable signal-to-noise ratio.
Abstract translation: 这里描述了使用独立可控x射线源的阵列进行相位对比成像的方法。 可以控制x射线源的阵列以产生X射线辐射的不同的空间图案，并且因此可用于对相位差信号进行编码，而不需要编码孔径。 编码孔径的缺乏增加了成像方法的灵活性。 例如，由于不需要固定的编码孔径，与编码孔径成像相比，可以增加成像技术的角度分辨率。 此外，缺乏无辐射光编码孔径增加了到达对象的光子通量，从而增加了可达到的信噪比。
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公开(公告)号：US20150078509A1
公开(公告)日：2015-03-19
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
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 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 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, a grid-controlled apparatus connected to each of the plurality of electron transmitting units, a control system for controlling each power supply; wherein the anode comprises: an anode plate made of metal and parallel to the upper surface of the electron transmitting unit; a plurality of targets arranged on the anode plate and disposed corresponding to the positions of the electron transmitting unit, the bottom surface of the target is connected to the anode plate and the upper surface of the target has a predetermined angle with the anode plate.
Abstract translation: 本公开的二维阵列分布式X射线装置包括：真空箱，其外围密封，其内部为高真空; 多个电子发射单元，其布置在真空箱壁上的二维阵列的一个平面中; 具有与多个电子发射单元相对应的靶的阳极，该多个电子发射单元与真空箱中的多个电子发射单元的平面平行布置; 具有连接到阳极的高压电源的电源和控制系统，连接到多个电子发射单元中的每一个的灯丝电源，连接到多个电子发射单元中的每一个的电网控制装置， 用于控制每个电源的控制系统; 其中所述阳极包括：由金属制成并平行于所述电子发射单元的上表面的阳极板; 布置在阳极板上并对应于电子发射单元的位置设置的多个靶，靶的底表面连接到阳极板，靶的上表面与阳极板具有预定的角度。
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