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    CATHODE FILAMENT ASSEMBLY
    42.
    发明授权
    CATHODE FILAMENT ASSEMBLY 有权
    阴极长丝组件

    公开(公告)号：EP2852964B1

    公开(公告)日：2017-02-08

    申请号：EP13734502.1

    申请日：2013-05-21

    Applicant: Koninklijke Philips N.V. ,  Philips GmbH

    Inventor： FOELLMER, Marcus, Walter ,  TERLETSKA, Zoryana ,  HAUTTMANN, Stefan

    IPC: H01J35/14 ,  H01J35/06

    CPC classification number: H01J35/06 ,  H01J1/18 ,  H01J1/92 ,  H01J9/042 ,  H01J35/14 ,  H01J35/165 ,  H01J37/065 ,  H01J2229/4824 ,  H01J2229/4831 ,  H01J2235/06 ,  H01J2237/032 ,  H01J2237/036 ,  H01J2237/038 ,  H01J2893/0006

    Abstract: A cathode for an X-ray tube, an X-ray tube, a system for X-ray imaging, and a method for an assembly of a cathode for an X-ray tube include a filament, a support structure, a body structure, and a filament frame structure. The filament is provided to emit electrons towards an anode in an electron emitting direction, and the filament at least partially includes a helical structure. Further, the filament is held by the support structure which is fixedly connected to the body structure. The filament frame structure is provided for electron-optical focusing of the emitted electrons, and the filament frame structure is provided adjacent to the outer boundaries of the filament. The filament frame structure includes frame surface portions arranged transverse to the emitting direction, and the filament frame structure is held by the support structure.

    Abstract translation: X射线管阴极，X射线管，X射线成像系统以及X射线管阴极组装方法技术领域本发明涉及X射线管阴极，X射线管，X射线成像系统以及X射线管阴极组装方法。 为了提供具有改进且便于组装的阴极，提供了用于X射线管的阴极（10），其包括灯丝（12），支撑结构（14），主体结构（16）和 细丝框架结构（18）。 提供灯丝以在电子发射方向（24）上朝向阳极发射电子，并且灯丝至少部分地包括螺旋结构（26）。 此外，灯丝由固定连接到本体结构的支撑结构保持。 灯丝框架结构用于发射电子的电子光学聚焦，并且灯丝框架结构设置在灯丝的外边界附近。 灯丝框架结构包括横向于发射方向布置的框架表面部分，并且灯丝框架结构由支撑结构保持。

    IMPROVED CATHODE STRUCTURES FOR X-RAY TUBES
    46.
    发明公开
    IMPROVED CATHODE STRUCTURES FOR X-RAY TUBES 有权
    VERBESSERTE KATHODENSTRUKTURFÜRRÖNTGENRÖHREN

    公开(公告)号：EP1987529A2

    公开(公告)日：2008-11-05

    申请号：EP07763351.9

    申请日：2007-01-29

    Applicant: Varian Medical Systems Technologies, Inc.

    Inventor： ARNOLD, James, T. ,  BANDY, Steve ,  VIRSHUP, Gary

    IPC: H01J35/06

    CPC classification number: H01J35/06 ,  H01J2235/06

    Abstract: An apparatus and method comprising a cathode structure which can be a cylindrical filament coiled in a helix or which can be constructed of a ribbon or other suitable shape. The cathode structure can be heated by passage of an electrical current, or by other means such as bombardment with energetic electrons. Selected portions of the surface of the cathode structure have an altered property with respect to the non-selected portions of the surface. In one embodiment, the altered property is a curvature. In another embodiment, the altered property is a work function. By altering the property of the selected portions of the surface, the electron beam intensity is increased, and the width is decreased.

    Abstract translation: 一种包括阴极结构的装置和方法，阴极结构可以是以螺旋线卷绕的圆柱形细丝，或者可以由带状物或其它合适的形状构成。 阴极结构可以通过电流加热，或者通过其他手段例如用高能电子轰击来加热。 阴极结构的表面的选定部分相对于表面的未选择部分具有改变的特性。 在一个实施例中，改变的特性是曲率。 在另一个实施例中，改变的属性是工作功能。 通过改变表面的选定部分的性质，电子束强度增加，并且宽度减小。

    AN ELECTRICALLY HEATED PLANAR CATHODE
    49.
    发明申请
    AN ELECTRICALLY HEATED PLANAR CATHODE 审中-公开
    电加热平面阴极

    公开(公告)号：WO2013170149A1

    公开(公告)日：2013-11-14

    申请号：PCT/US2013/040553

    申请日：2013-05-10

    Applicant: THERMO SCIENTIFIC PORTABLE ANALYTICAL INSTRUMENTS INC.

    Inventor： CARUSO, David, J. ,  DINSMORE, Mark, T.

    IPC: H01J35/06

    CPC classification number: H01J35/06 ,  H01J1/15 ,  H01J35/14 ,  H01J2235/06

    Abstract: An electrically heated planar cathode for use in miniature x-ray tubes may be spiral design laser cut from a thin tantalum alloy ribbon foil (116) with grain stabilizing features. Bare ribbon is mounted to an aluminum nitride substrate (110) in a manner that is puts the ribbon in minimal tension before it is machined into the spiral pattern (118). The spiral pattern can be optimized for electrical, thermal, and emission characteristics.

    Abstract translation: 用于微型X射线管的电加热平面阴极可以是从具有晶粒稳定特征的薄钽合金带状箔（116）切割的螺旋设计激光。 裸带以将其加工成螺旋图案（118）之前将带状物放置在最小张力的方式安装到氮化铝基板（110）上。 螺旋图案可以针对电气，热和发射特性进行优化。

    X-RAY TUBE CATHODE WITH MAGNETIC ELECTRON BEAM STEERING
    50.
    发明申请
    X-RAY TUBE CATHODE WITH MAGNETIC ELECTRON BEAM STEERING 审中-公开
    带磁电子束转向的X射线管阴极

    公开(公告)号：WO2013109649A1

    公开(公告)日：2013-07-25

    申请号：PCT/US2013/021775

    申请日：2013-01-16

    Applicant: VARIAN MEDICAL SYSTEMS, INC.

    Inventor： BOYE, James, Russell ,  TRESEDER, Robert, Clark

    IPC: H01J35/06

    CPC classification number: H01J35/06 ,  H01J35/14 ,  H01J35/30 ,  H01J2235/06

    Abstract: An x-ray tube cathode with magnetic electron beam steering. In one example embodiment, an x-ray tube cathode includes a cathode head and an electron emitter. The cathode head includes electrically conductive and non-magnetic material integrated with magnetic material. The cathode head defines an emitter slot in a portion of electrically conductive and non-magnetic material positioned between two portions of magnetic material. The electron emitter is positioned within the emitter slot. The electron emitter is configured to emit a beam of electrons. The beam of electrons is configured to be both focused by the electrically conductive and non-magnetic material and steered during beam formation by the magnetic material.

    Abstract translation: 具有磁电子束转向的X射线管阴极。 在一个示例性实施例中，x射线管阴极包括阴极头和电子发射器。 阴极头包括与磁性材料集成的导电和非磁性材料。 阴极头在位于磁性材料的两个部分之间的导电和非磁性材料的一部分中限定发射器狭缝。 电子发射器位于发射极槽内。 电子发射器被配置为发射电子束。 电子束被配置为由导电和非磁性材料聚焦，并且在通过磁性材料形成光束期间转向。

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