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    Low Aberration, High Intensity Electron Beam For X-Ray Tubes
    81.
    发明申请
    Low Aberration, High Intensity Electron Beam For X-Ray Tubes 有权
    低畸变，高强度电子束X射线管

    公开(公告)号：US20160189908A1

    公开(公告)日：2016-06-30

    申请号：US14586066

    申请日：2014-12-30

    Applicant: General Electric Company

    Inventor： Sergio Lemaitre

    IPC: H01J35/06 ,  H01J35/08 ,  G01N23/04 ,  H01J35/14 ,  H01J35/04

    CPC classification number: H01J35/06 ,  H01J3/38 ,  H01J19/10 ,  H01J19/48 ,  H01J37/063 ,  H01J2229/4844 ,  H01J2229/4896 ,  H01J2235/06

    Abstract: In the present invention, a cathode for an x-ray tube is formed with a large area flat emitter. To reduce the aberrations to a minimum the emission area in the flat emitter has a non-rectangular shape and focusing pads arranged around the emitter. In an exemplary embodiment, the flat emitter has a non-rectilinear polygonal shape for an emission area on the emitter in order to increase the emission current from the emitter at standard voltage levels without the need to run the emitters at a higher temperature, add additional emitters to the cathode and/or to coat the emitters with a low work function material.

    Abstract translation: 在本发明中，用于X射线管的阴极形成有大面积的平坦发射体。 为了将像差减小到最小，扁平发射器中的发射面积具有非矩形形状和围绕发射极布置的聚焦焊盘。 在示例性实施例中，扁平发射器具有用于发射极上的发射区域的非直线多边形形状，以便在标准电压电平下增加来自发射极的发射电流，而不需要在较高温度下运行发射器，增加额外的 发射器到阴极和/或用低功函数材料涂覆发射器。

    FLAT EMITTER COATED WITH LOW WORK FUNCTION MATERIAL
    82.
    发明申请
    FLAT EMITTER COATED WITH LOW WORK FUNCTION MATERIAL 有权
    平面发光体涂有低功能材料

    公开(公告)号：US20160093462A1

    公开(公告)日：2016-03-31

    申请号：US14499045

    申请日：2014-09-26

    Applicant: Varian Medical Systems, Inc.

    Inventor： Gary F. Virshup ,  Stephen G. Bandy ,  Michael C. Green ,  Clifford K. Nishimoto ,  James R. Boye

    IPC: H01J35/06 ,  H01J9/04

    CPC classification number: H01J35/06 ,  H01J9/04 ,  H01J9/042 ,  H01J2235/06

    Abstract: Embodiments include an X-ray cathode filament, filament system, process to manufacture the filament and process to use the filament, where the filament includes a planar substrate, such as of tungsten, having a top surface coated with a coating of carburized tungsten (e.g., W2C) and thoria (ThO2). A first electron beam is emitted from the coating through a thermionic effect at a first temperature, such as when the filament is heated to between 1700 and 1900 degrees Celsius by running an electrical current through the filament. At this temperature, a second electron beam may be caused by (1) a reaction that includes creating thorium (Th) in the coating, and (2) the thorium diffusing to uncoated surfaces of the substrate from which the second electron beam is emitted. The filament may also have slots forming a zipper shape, forming a square switchback shape, or forming a rectangular labyrinth shape to reduce the current required to heat the filament.

    Abstract translation: 实施方案包括X射线阴极细丝，细丝系统，制造丝的方法和使用丝的方法，其中细丝包括具有涂覆有渗碳钨涂层的顶表面的诸如钨的平面基底（例如， ，W2C）和thoria（ThO 2）。 第一电子束在第一温度下通过热离子效应从涂层发射，例如当灯丝通过电流通过灯丝而被加热到1700和1900摄氏度之间时。 在该温度下，可以通过（1）包括在涂层中产生钍（Th）的反应和（2）钍扩散到发射第二电子束的衬底的未涂覆表面的方式引起第二电子束。 灯丝还可以具有形成拉链形状的槽，形成方形折回形状，或形成矩形迷宫形状以减少加热灯丝所需的电流。

    Radiation generating tube and radiation generating apparatus using the same
    83.
    发明授权
    Radiation generating tube and radiation generating apparatus using the same 有权
    辐射发生管和使用其的辐射发生装置

    公开(公告)号：US09177753B2

    公开(公告)日：2015-11-03

    申请号：US13669240

    申请日：2012-11-05

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Koji Yamazaki ,  Kazuyuki Ueda

    IPC: H01J35/06 ,  H01J35/14 ,  H01J35/16

    CPC classification number: H01J35/16 ,  H01J2235/06 ,  H01J2235/186

    Abstract: A radiation generating tube includes a cathode connected to an electron emitting member; an anode including a target; and an insulating tube disposed between the cathode and the anode to surround the electron emitting member. The insulating tube includes an electrical potential defining member at an intermediate portion of the insulating tube in a longitudinal axis direction of the insulating tube. The electrical potential defining member is electrically connected to an electrical potential defining unit. The potential of the electrical potential defining member is controlled to be higher than that of the cathode and lower than that of the anode. A boundary of the electrical potential defining member and the insulating tube does not face a portion of the anode exposed to the inside of the radiation generating tube.

    Abstract translation: 辐射发生管包括连接到电子发射部件的阴极; 包括靶的阳极; 以及设置在阴极和阳极之间以包围电子发射部件的绝缘管。 绝缘管在绝缘管的纵向轴线方向上在绝缘管的中间部分包括电位限定部件。 电势限定构件电连接到电位限定单元。 电位限定元件的电位被控制为高于阴极并且低于阳极的电位。 电位限定构件和绝缘管的边界不面向暴露于辐射发生管内部的阳极的一部分。

    Cathode assembly for a long throw length X-ray tube
    85.
    发明授权
    Cathode assembly for a long throw length X-ray tube 有权
    用于长射线X射线管的阴极组件

    公开(公告)号：US09048064B2

    公开(公告)日：2015-06-02

    申请号：US13786272

    申请日：2013-03-05

    Applicant: Varian Medical Systems, Inc.

    Inventor： James Russell Boye ,  Colton Bridger Woodman ,  Todd S. Parker

    IPC: H01J35/14

    CPC classification number: H01J35/14 ,  H01J2235/06

    Abstract: Cathode assembly for a long throw length x-ray tube. In one example embodiment, a cathode assembly for an x-ray tube includes an electron emitter, an acceleration region, and a drift region. The electron emitter includes a curved emitting surface configured to emit an electron beam having a y-dimension that is greater than an x-dimension at the electron emitter. The acceleration region is defined adjacent to the electron emitter. The acceleration region is configured such that when the electron beam propagates within the acceleration region, the electron beam accelerates in a z-direction substantially normal to a midpoint of the curved emitting surface. The drift region is defined between the acceleration region and an anode. The drift region is configured such that the combined lengths of the drift region and the acceleration region are sufficient for the y-dimension to be less than the x-dimension at the anode.

    Abstract translation: 用于长射线X射线管的阴极组件。 在一个示例实施例中，用于X射线管的阴极组件包括电子发射器，加速区域和漂移区域。 电子发射器包括被配置为发射具有大于电子发射体的x维度的y维的电子束的弯曲发射表面。 加速区域被定义为与电子发射器相邻。 加速区域被构造成使得当电子束在加速区域内传播时，电子束在大致垂直于弯曲发射表面的中点的z方向上加速。 漂移区域定义在加速区域和阳极之间。 漂移区域被配置为使得漂移区域和加速区域的组合长度足以使y维度小于阳极处的x维度。

    X-ray anode
    87.
    发明授权
    X-ray anode 失效
    X射线阳极

    公开(公告)号：US08687769B2

    公开(公告)日：2014-04-01

    申请号：US13130863

    申请日：2009-11-19

    Applicant: Rolf Karl Otto Behling

    Inventor： Rolf Karl Otto Behling

    IPC: H01J35/06

    CPC classification number: H01J35/10 ,  H01J35/06 ,  H01J35/14 ,  H01J35/305 ,  H01J2235/06 ,  H01J2235/068 ,  H01J2235/081 ,  H01J2235/086

    Abstract: A rotatable anode for an X-ray tube comprises a first unit (901) for being hit by a first electron beam, and at least a second unit (902) being hit by at least a second electron beam, the second unit being electrically isolated from the first. In addition, an X-ray system comprises the anode, a main cathode for generating an electron beam, and first electrical potential, and an auxiliary cathode for influencing a second electrical potential. The main cathode deflects the electron beam to heat the auxiliary cathode. Furthermore, a device determines electrical potential by detecting a point of impact of the electron beam onto the anode and/or by detecting an X-ray spectrum of radiation starting from the anode. The electron beam hits the first unit and is deflected, wherein the deflected beam hits the second unit the point of impact. The first unit and/or second unit emit radiation.

    Abstract translation: 用于X射线管的可旋转阳极包括用于被第一电子束击中的第一单元（901）和由至少第二电子束击中的至少第二单元（902），所述第二单元被电隔离 从第一个。 此外，X射线系统包括阳极，用于产生电子束的主阴极和第一电位，以及用于影响第二电位的辅助阴极。 主阴极偏转电子束以加热辅助阴极。 此外，器件通过检测电子束对阳极的冲击点和/或通过检测从阳极开始的辐射的X射线光谱来确定电位。 电子束撞击第一单元并被偏转，其中偏转的光束撞击第二单元的撞击点。 第一单元和/或第二单元发射辐射。

    Auxiliary grid electrode for X-ray tubes
    88.
    发明授权
    Auxiliary grid electrode for X-ray tubes 有权
    辅助栅极用于X射线管

    公开(公告)号：US08498380B2

    公开(公告)日：2013-07-30

    申请号：US13131086

    申请日：2009-11-23

    Applicant: Rolf Karl Otto Behling

    Inventor： Rolf Karl Otto Behling

    IPC: H01J35/14

    CPC classification number: H01J35/14 ,  H01J35/04 ,  H01J35/045 ,  H01J35/26 ,  H01J2235/06

    Abstract: The present invention refers to an X-ray tube of the rotary-anode type which comprises at least one temporarily negatively biased auxiliary grid electrode (119) with an aperture through which an electron beam (115) emitted by a tube cathode's thermoionic electron emitter (111) can pass. As an alternative thereto, the auxiliary grid electrode (119) may also be positively biased so as to enhance electron emission from a thermoionic electron emitter (111). The auxiliary grid electrode may thereby be connected to a supply voltage UAUX of a controllable voltage supply unit by means of a feedthrough cable (120) serving as a feeding line for providing the main control grid (112) with a grid supply voltage UG.

    Abstract translation: 本发明涉及一种旋转阳极型X射线管，其包括至少一个具有孔的暂时负偏置的辅助栅电极（119），电子束（115）由管阴极的热分子电子发射器（ 111）可以通过。 作为替代方案，辅助栅电极（119）也可以被正偏置，以便增强来自热电子发射体（111）的电子发射。 因此，辅助栅极可以通过用作为主控电网（112）提供电网电源电压UG的馈电线的馈通电缆（120）连接到可控电压供应单元的电源电压UAUX。

    RADIATION GENERATING TUBE AND RADIATION GENERATING APPARATUS USING THE SAME
    89.
    发明申请
    RADIATION GENERATING TUBE AND RADIATION GENERATING APPARATUS USING THE SAME 有权
    使用辐射发生管和辐射发生装置

    公开(公告)号：US20130121473A1

    公开(公告)日：2013-05-16

    申请号：US13669240

    申请日：2012-11-05

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Koji Yamazaki ,  Kazuyuki Ueda

    IPC: H01J35/02

    CPC classification number: H01J35/16 ,  H01J2235/06 ,  H01J2235/186

    Abstract: A radiation generating tube includes a cathode connected to an electron emitting member; an anode including a target; and an insulating tube disposed between the cathode and the anode to surround the electron emitting member. The insulating tube includes an electrical potential defining member at an intermediate portion of the insulating tube in a longitudinal axis direction of the insulating tube. The electrical potential defining member is electrically connected to an electrical potential defining unit. The potential of the electrical potential defining member is controlled to be higher than that of the cathode and lower than that of the anode. A boundary of the electrical potential defining member and the insulating tube does not face a portion of the anode exposed to the inside of the radiation generating tube.

    Abstract translation: 辐射发生管包括连接到电子发射部件的阴极; 包括靶的阳极; 以及设置在阴极和阳极之间以包围电子发射部件的绝缘管。 绝缘管在绝缘管的纵向轴线方向上在绝缘管的中间部分包括电位限定部件。 电势限定构件电连接到电位限定单元。 电位限定元件的电位被控制为高于阴极并且低于阳极的电位。 电位限定构件和绝缘管的边界不面向暴露于辐射发生管内部的阳极的一部分。

    SUBSTRATE WITH CARBON NANOTUBES, AND METHOD TO TRANSFER CARBON NANOTUBES
    90.
    发明申请
    SUBSTRATE WITH CARBON NANOTUBES, AND METHOD TO TRANSFER CARBON NANOTUBES 审中-公开
    具有碳纳米管的基板和转移碳纳米管的方法

    公开(公告)号：US20130118682A1

    公开(公告)日：2013-05-16

    申请号：US13713467

    申请日：2012-12-13

    Applicant: Heinrich Zeininger

    Inventor： Heinrich Zeininger

    IPC: H01J9/02

    CPC classification number: H01J9/025 ,  H01J1/304 ,  H01J2201/30469 ,  H01J2235/06 ,  Y10T428/24058

    Abstract: A substrate for field emitters uses carbon nanotubes (CNTs) on a conductive substrate, the CNTs being erected essentially perpendicular to the substrate and aligned. In a method to transfer a CNT forest from a first substrate to a second substrate, the second substrate is coated with adhesive and the peaks (tips) of the CNTs on the first substrate are embedded in the uncurred adhesive on the second substrate. After the adhesive cures, the CNTs are removed from the first substrate with the peaks anchored in the cured adhesive on the second substrate.

    Abstract translation: 用于场发射器的衬底在导电衬底上使用碳纳米管（CNT），所述CNT基本上垂直于衬底竖立并对齐。 在将CNT森林从第一衬底转移到第二衬底的方法中，第二衬底涂覆有粘合剂，并且将第一衬底上的CNT的峰（尖端）嵌入在第二衬底上的未发生粘合剂中。 在粘合剂固化之后，将碳纳米管从第一基底上去除，其中峰固定在第二基底上的固化的粘合剂中。

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