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公开(公告)号：US10014148B2
公开(公告)日：2018-07-03
申请号：US14904061
申请日：2015-08-19
Applicant: Nuctech Company Limited
Inventor： Huaping Tang , Zhiqiang Chen , Yuanjing Li , Yonggang Wang , Zhanfeng Qin
CPC classification number: H01J35/065 , H01J3/021 , H01J35/14 , H01J2203/022 , H01J2203/0224 , H01J2203/0236 , H01J2235/062 , H01J2235/068 , H05G1/52
Abstract: The present disclosure is directed to an electron source and an X-ray source using the same. The electron source of the present invention comprises: at least two electron emission zones, each of which comprises a plurality of micro electron emission units, wherein the micro electron emission unit comprises: a base layer, an insulating layer on the base layer, a grid layer on the insulating layer, an opening in the grid layer, and an electron emitter that is fixed at the base layer and corresponds to a position of the opening, wherein the micro electron emission units in the same electron emission zone are electrically connected and simultaneously emit electrons or do not emit electrons at the same time, and wherein different electron emission zones are electrically partitioned.
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公开(公告)号：US20170323755A1
公开(公告)日：2017-11-09
申请号：US15603340
申请日：2017-05-23
Applicant: ELWHA LLC
Inventor： William David Duncan , Roderick A. Hyde , Jordin T. Kare , Max N. Mankin , Tony S. Pan , Lowell L. Wood
CPC classification number: H01J1/48 , H01J3/021 , H01J2203/0232 , Y10T29/49204
Abstract: Graphene grids are configured for applications in vacuum electronic devices. A multilayer graphene grid is configured as a filter for electrons in a specific energy range, in a field emission device or other vacuum electronic device. A graphene grid can be deformable responsive to an input to vary electric fields proximate to the grid. A mesh can be configured to support a graphene grid.
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公开(公告)号：US20170162359A1
公开(公告)日：2017-06-08
申请号：US14904061
申请日：2015-08-19
Applicant: NUCTECH COMPANY LIMITED
Inventor： Huaping Tang , Zhiqiang Chen , Yuanjing Li , Yonggang Wang , Zhanfeng Qin
CPC classification number: H01J35/065 , H01J3/021 , H01J35/14 , H01J2203/022 , H01J2203/0224 , H01J2203/0236 , H01J2235/062 , H01J2235/068 , H05G1/52
Abstract: The present disclosure is directed to an electron source and an X-ray source using the same. The electron source of the present invention comprises: at least two electron emission zones, each of which comprises a plurality of micro electron emission units, wherein the micro electron emission unit comprises: a base layer, an insulating layer on the base layer, a grid layer on the insulating layer, an opening in the grid layer, and an electron emitter that is fixed at the base layer and corresponds to a position of the opening, wherein the micro electron emission units in the same electron emission zone are electrically connected and simultaneously emit electrons or do not emit electrons at the same time, and wherein different electron emission zones are electrically partitioned.
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公开(公告)号：US09627168B2
公开(公告)日：2017-04-18
申请号：US14539571
申请日：2014-11-12
Applicant: Elwha LLC
Inventor： Roderick A. Hyde , Jordin T. Kare , Tony S. Pan , Lowell L. Wood, Jr.
CPC classification number: H01J29/46 , H01J1/48 , H01J3/021 , H01J45/00 , H01J2203/0232
Abstract: A field emission device is configured with a grid that includes nanotubes or nanowires. In one embodiment a cathode, an anode, and a nanotube or nanowire grid are responsive to inputs to produce a potential barrier between the grid and at least one of the cathode and the anode such that a set of electrons from the cathode can tunnel through the potential barrier to produce a net current at the anode.
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公开(公告)号：US20170062170A1
公开(公告)日：2017-03-02
申请号：US15183175
申请日：2016-06-15
Applicant: Tsinghua University , HON HAI PRECISION INDUSTRY CO., LTD.
Inventor： PENG LIU , PI-JIN CHEN , ZONG-QIAN LI , DUAN-LIANG ZHOU , CHUN-HAI ZHANG , SHOU-SHAN FAN
IPC: H01J25/22
CPC classification number: H01J25/22 , H01J3/021 , H01J23/08 , H01J31/127
Abstract: A Tera Hertz reflex klystron includes an electron emission unit, a resonant unit and an output unit. The electron emission is used to emit a plurality of electrons. The electron emission unit defines a first opening. The resonant unit comprises a resonant cavity frame. The resonant cavity frame comprises a top wall and a bottom wall and defines a resonant cavity. The top wall and the bottom wall faces with each other. The bottom wall comprises a bottom opening. The top wall comprises a top opening and at least one outputting hole. The bottom opening and the first opening are merged with each other. The output unit being configured to output Tera Hertz waves. The plurality of electrons are transferred to the output unit from the at least one outputting hole.
Abstract translation: Tera Hertz反射速调管包括电子发射单元，谐振单元和输出单元。 电子发射用于发射多个电子。 电子发射单元限定第一开口。 谐振单元包括谐振腔框架。 谐振腔框架包括顶壁和底壁并且限定谐振腔。 顶壁和底壁彼此面对。 底壁包括底部开口。 顶壁包括顶部开口和至少一个输出孔。 底部开口和第一开口彼此合并。 输出单元被配置为输出Tera Hertz波。 多个电子从至少一个输出孔转移到输出单元。
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Patent Agency Ranking
公开(公告)号：US09552953B2
公开(公告)日：2017-01-24
申请号：US14753380
申请日：2015-06-29
Applicant: Tsinghua University , HON HAI PRECISION INDUSTRY CO., LTD.
Inventor： Bing-Chu Du , Peng Liu , Duan-Liang Zhou , Chun-Hai Zhang , Shou-Shan Fan
CPC classification number: H01J1/304 , H01J3/021 , H01J9/025 , H01J2201/30469 , H01J2203/0268 , H01J2203/0272 , H01J2203/028 , H01J2203/0284 , H01J2203/0288
Abstract: The disclosure relates to a field emission cathode. The field emission cathode includes a microchannel plate, a cathode electrode and a number of cathode emitters. The microchannel plate is an insulative plate and includes a first surface and a second surface opposite to the first surface. The microchannel plate defines a number of holes extending through the microchannel plate from the first surface to the second surface. The cathode electrode is located on the first surface. The number of cathode emitters are filled in the number of holes and electrically connected with the cathode electrode.
Abstract translation: 本发明涉及场致发射阴极。 场发射阴极包括微通道板，阴极电极和多个阴极发射体。 微通道板是绝缘板，包括第一表面和与第一表面相对的第二表面。 微通道板限定了从第一表面到第二表面延伸穿过微通道板的许多孔。 阴极位于第一表面。 阴极发射体的数量填充有孔数并与阴极电连接。
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公开(公告)号：US20160013005A1
公开(公告)日：2016-01-14
申请号：US14753380
申请日：2015-06-29
Applicant: Tsinghua University , HON HAI PRECISION INDUSTRY CO., LTD.
Inventor： BING-CHU DU , PENG LIU , DUAN-LIANG ZHOU , CHUN-HAI ZHANG , SHOU-SHAN FAN
IPC: H01J1/304
CPC classification number: H01J1/304 , H01J3/021 , H01J9/025 , H01J2201/30469 , H01J2203/0268 , H01J2203/0272 , H01J2203/028 , H01J2203/0284 , H01J2203/0288
Abstract: The disclosure relates to a field emission cathode. The field emission cathode includes a microchannel plate, a cathode electrode and a number of cathode emitters. The microchannel plate is an insulative plate and includes a first surface and a second surface opposite to the first surface. The microchannel plate defines a number of holes extending through the microchannel plate from the first surface to the second surface. The cathode electrode is located on the first surface. The number of cathode emitters are filled in the number of holes and electrically connected with the cathode electrode.
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公开(公告)号：US09224571B2
公开(公告)日：2015-12-29
申请号：US13825918
申请日：2011-09-26
Applicant: Junji Urakawa , Nobuhiro Terunuma , Toshikazu Takatomi
Inventor： Junji Urakawa , Nobuhiro Terunuma , Toshikazu Takatomi
CPC classification number: H01J29/481 , H01J3/021 , H01J3/36 , H01J23/06 , H01J25/04 , H01J2237/0432 , H01J2237/04735 , H01J2237/062 , H01J2237/06333 , H05G2/00 , H05H7/08 , H05H2007/084
Abstract: A photocathode high-frequency electron-gun cavity apparatus of the present invention is provided with a high-frequency acceleration cavity (1), a photocathode (8, 15), a laser entering port (9), a high-frequency power input coupler port (10), and a high-frequency resonant tuner (16). Here, the apparatus adopts an ultra-small high-frequency accelerator cavity which contains a cavity cell formed only with a smooth and curved surface at an inner face thereof without having a sharp angle part for preventing discharging, obtaining higher strength of high-frequency electric field, and improving high-frequency resonance stability. Further, the photocathode is arranged at an end part of a half cell (5) of the high-frequency acceleration cavity for maximizing electric field strength at the photocathode face, perpendicular incidence of laser is ensured by arranging a laser entering port at a position facing to the photocathode behind an electron beam extraction port of the high-frequency acceleration cavity for maximizing quality of short-bunch photoelectrons, and a high-frequency power input coupler port is arranged at a side part of the cell of the high-frequency acceleration cavity for enhancing high-frequency electric field strength. According to the above, it is possible to provide a small photocathode high-frequency electron-gun cavity apparatus capable of generating a high-strength and high-quality electron beam.
Abstract translation: 本发明的光电阴极高频电子枪腔装置设置有高频加速腔（1），光电阴极（8,15），激光进入口（9），高频电力输入耦合器 端口（10）和高频谐振调谐器（16）。 这里，该装置采用超小型高频加速器腔，其包含在其内表面上仅形成有平滑且曲面的空腔，而不具有用于防止放电的锐角部，从而获得较高强度的高频电 场，提高高频共振稳定性。 此外，光电阴极被布置在高频加速腔的半电池（5）的端部，用于使光电阴极面的电场强度最大化，通过将激光进入端口布置在面对的位置来确保激光的垂直入射 到高频加速腔的电子束提取口后面的光电阴极，用于使短束光电子的质量最大化，并且高频电力输入耦合器端口布置在高频加速腔的单元的侧面 用于提高高频电场强度。 根据上述，可以提供能够产生高强度和高质量电子束的小型光电阴极高频电子枪腔装置。
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公开(公告)号：US09093243B2
公开(公告)日：2015-07-28
申请号：US14284128
申请日：2014-05-21
Applicant: NATIONAL UNIVERSITY OF SINGAPORE
Inventor： Anjam Khursheed
CPC classification number: H01J3/18 , H01J3/021 , H01J3/027 , H01J3/20 , H01J37/063 , H01J37/065 , H01J37/26 , H01J2237/06333 , H01J2237/0635 , H01J2237/1534
Abstract: A gun configured to generate charged particles, comprising a ring-cathode (200) electrically configured to generate a charged particle beam; a lens arranged to focus the charged particle beam on a specimen; and at least one correction focusing electrode (1406) arranged to generate at least one electrostatic/magnetic field to further divergently/convergently focus the charged particle beam for correcting in-plane geometric aberrations associated with the lens, the focusing being based on the in-plane geometric aberrations associated with the lens. A related method is also disclosed.
Abstract translation: 一种配置成产生带电粒子的枪，包括电气配置以产生带电粒子束的环形阴极（200）; 透镜，布置成将带电粒子束聚焦在样本上; 以及至少一个校正聚焦电极（1406），其布置成产生至少一个静电/磁场，以进一步发散/收敛地聚焦带电粒子束，用于校正与透镜相关联的面内几何像差， 与透镜相关的平面几何像差。 还公开了相关方法。
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公开(公告)号：US20140270087A1
公开(公告)日：2014-09-18
申请号：US14207216
申请日：2014-03-12
Applicant: SRI INTERNATIONAL , Samsung Electronics Co., Ltd.
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
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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