中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

70 records (took 0.019 seconds)

    MULTI-STAGE ELECTRON GUN HAVING AN ELECTROSTATIC CAVITY
    31.
    发明申请
    MULTI-STAGE ELECTRON GUN HAVING AN ELECTROSTATIC CAVITY 审中-公开
    具有静电孔的多级电子枪

    公开(公告)号：WO1997044805A1

    公开(公告)日：1997-11-27

    申请号：PCT/US1997008727

    申请日：1997-05-20

    Applicant: SCHWARTZ, Ansel, M. ,  MAKO, Frederick, M. ,  FISHER, Amnon

    Inventor： SCHWARTZ, Ansel, M.

    IPC: H01J23/06

    CPC classification number: H01J3/023 ,  H01J23/06 ,  H01J2201/3423

    Abstract: The present invention pertains to an electron gun that generates an electron flow to produce r.f. energy therefrom. The electron gun (10) comprises an electrostatic cavity (12) having a first stage (14) with emitting faces (16) and multiple stages with emitting sections (18). The electron gun (10) also includes an electrostatic force generating mechanism (15) which encompasses the emitting faces (16) and the multiple emitting sections (18) such that electrons directed from the emitting faces (16) contact the emitting sections (18) so that additional electrons are emitted therefrom. Moreover, a method of producing electrons using this invention is described.

    Abstract translation: 本发明涉及产生电子流以产生r.f的电子枪。 能量。 电子枪（10）包括具有发射面（16）的第一级（14）和具有发射部分（18）的多级的静电腔（12）。 电子枪（10）还包括一个静电力产生机构（15），其包围发射面（16）和多个发射部分（18），使得从发射面（16）引导的电子接触发射部分（18） 从而从其发射附加电子。 此外，描述使用本发明产生电子的方法。

    VACUUM ELECTRONIC DEVICE
    33.
    发明申请
    VACUUM ELECTRONIC DEVICE 审中-公开
    真空电子设备

    公开(公告)号：WO03054901A3

    公开(公告)日：2003-10-02

    申请号：PCT/IB0205655

    申请日：2002-12-20

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS CORP INTELLECTUAL PTY ,  BACHMANN PETER K ,  SCHIEBEL ULRICH ,  VAN DER VAART NIJS C

    Inventor： BACHMANN PETER K ,  SCHIEBEL ULRICH ,  VAN DER VAART NIJS C

    IPC: H01J3/02 ,  H01J1/304

    CPC classification number: H01J3/023

    Abstract: The invention describes a vacuum electronic device comprising an electron source having at least one cathode for emitting of electrons, at least one electron beam guidance cavity for concentrating electrons emitted from the cathode, said cavity having an entrance aperture and an exit aperture, a portion of an inner side of said cavity around the exit aperture being provided with an insulating material, and a first electrode being connectable to a first power supply means for applying, in operation, an electric field with a first field strength E1 between the cathode and the exit aperture to allow electron transport throught he electron beam guidance cavity, wherein the cathode comprises a carbon-based cold emitter.

    Abstract translation: 本发明描述了一种真空电子器件，其包括具有用于发射电子的至少一个阴极的电子源，用于聚集从阴极发射的电子的至少一个电子束引导腔，所述腔具有入口孔和出口孔， 在出口孔周围的所述空腔的内侧设置有绝缘材料，并且第一电极可连接到第一供电装置，用于在操作中施加在阴极和出口之间具有第一场强E1的电场 以允许电子通过电子束引导腔传输，其中阴极包括基于碳的冷发射器。

    COLD CATHODE WITH CONCENTRATED EMISSION
    35.
    发明申请
    COLD CATHODE WITH CONCENTRATED EMISSION 审中-公开
    冷阴极集中排放

    公开(公告)号：WO2003081629A1

    公开(公告)日：2003-10-02

    申请号：PCT/EP2003/001557

    申请日：2003-02-17

    Applicant: THOMSON LICENSING S.A. ,  RICAUD, Jean-Luc

    Inventor： RICAUD, Jean-Luc

    IPC: H01J29/48

    CPC classification number: H01J29/04 ,  H01J3/023 ,  H01J29/482

    Abstract: Electron source for generating an electron beam comprising: - at least one cold-emission cathode (20), - a substantially pyramid-shaped emissive electrode (31), covered with a layer (37) of material having a secondary emission coefficient at least equal to 1, the said layer being designed to transport secondary electrons from the base (34) of the electrode to its tip (35), the said secondary electrons (42) being generated by the incident electrons (24) coming from the cold-emission cathode, - means (50) for generating a tangential electric field increasing from the base of the emissive electrode to its tip, - means (24, 51) for extracting the secondary electrons from the tip of the emissive electrode in order to generate an electron beam. Enables an electron beam with a high current density to be obtained from a cold-emission cathode.

    Abstract translation: 用于产生电子束的电子源，包括： - 至少一个冷发射阴极（20）， - 基本上棱锥形的发射电极（31），覆盖有二次发射系数至少相等的材料层（37） 至1，所述层被设计成将二次电子从电极的基极（34）传输到其尖端（35），所述二次电子（42）由来自冷发射的入射电子（24）产生 阴极， - 用于产生从发射电极的基极到其尖端的切向电场的装置（50）; - 用于从发射电极的尖端提取二次电子以产生电子的装置（24,51） 光束。 使得能够从冷发射阴极获得具有高电流密度的电子束。

    Miniature, Low-Power X-Ray Tube Using A Microchannel Electron Generator Electron Source
    39.
    发明申请
    Miniature, Low-Power X-Ray Tube Using A Microchannel Electron Generator Electron Source 失效
    微型，低功耗X射线管使用微通道电子发生器电子源

    公开(公告)号：US20100195801A1

    公开(公告)日：2010-08-05

    申请号：US12628446

    申请日：2009-12-01

    Applicant: Wm. Timothy Elam ,  Warren C. Kelliher ,  William Hershyn Trust ,  David P. DeLong

    Inventor： Wm. Timothy Elam ,  Warren C. Kelliher ,  William Hershyn Trust ,  David P. DeLong

    IPC: H01J35/18 ,  H01J43/04

    CPC classification number: H01J35/065 ,  H01J3/023 ,  H01J43/246 ,  H01J2235/062 ,  H05G1/10

    Abstract: Embodiments of the invention provide a novel, low-power X-ray tube and X-ray generating system. Embodiments of the invention use a multichannel electron generator as the electron source, thereby increasing reliability and decreasing power consumption of the X-ray tube. Unlike tubes using a conventional filament that must be heated by a current power source, embodiments of the invention require only a voltage power source, use very little current, and have no cooling requirements. The microchannel electron generator comprises one or more microchannel plates (MCPs), Each MCP comprises a honeycomb assembly of a plurality of annular components, which may be stacked to increase electron intensity. The multichannel electron generator used enables directional control of electron flow. In addition, the multichannel electron generator used is more robust than conventional filaments, making the resulting X-ray tube very shock and vibration resistant.

    Abstract translation: 本发明的实施例提供了一种新颖的低功率X射线管和X射线产生系统。 本发明的实施例使用多声道电子发生器作为电子源，从而提高X射线管的可靠性和降低功耗。 与使用必须由电流源加热的传统灯丝的管不同，本发明的实施例仅需要电压电源，使用极少的电流，并且不具有冷却要求。 微通道电子发生器包括一个或多个微通道板（MCP）。每个MCP包括多个环形部件的蜂窝组件，其可堆叠以增加电子强度。 所使用的多通道电子发生器能够对电子流进行定向控制。 此外，所使用的多声道电子发生器比常规灯丝更坚固，使得所得到的X射线管非常震动和抗振动。

    Electron gun having multiple transmitting and emitting sections
    40.
    发明授权
    Electron gun having multiple transmitting and emitting sections 失效
    具有多个发射和发射部分的电子枪

    公开(公告)号：US06633129B2

    公开(公告)日：2003-10-14

    申请号：US09991294

    申请日：2001-11-21

    Applicant: Frederick M. Mako

    Inventor： Frederick M. Mako

    IPC: H01J2306

    CPC classification number: H01J3/023

    Abstract: An electron gun that generates multiple electron bunches and the application of this gun to produce rf energy. The electron gun includes an rf input cavity having a first side with multiple emitting surfaces and a second side with multiple transmitting and emitting sections. The gun also includes a mechanism for producing a rotating and oscillating force which encompasses the multiple emitting surfaces and the multiple sections so electrons are directed between the multiple emitting surfaces and the multiple sections to contact the multiple emitting surfaces and generate additional electrons and to contact the multiple sections to generate additional electrons or escape the cavity through the multiple sections. A method for producing multiple electron bunches.

    Abstract translation: 产生多个电子束的电子枪，以及该枪的应用以产生能量。 电子枪包括具有多个发射表面的第一侧的RF输入腔和具有多个发射和发射区段的第二侧。 枪还包括用于产生旋转和振荡力的机构，其包围多个发射表面和多个部分，使得电子被引导在多个发射表面和多个部分之间以接触多个发射表面并产生附加电子并且接触 多个部分产生额外的电子或通过多个部分逃逸空腔。 一种生产多束电子束的方法

Patent Agency Ranking