公开(公告)号：CA1098578A

公开(公告)日：1981-03-31

申请号：CA289351

申请日：1977-10-24

Applicant: RCA CORP

Inventor： GANGE ROBERT A

IPC: H01J31/12 ,  H01J1/20 ,  H01J3/08 ,  H01J29/04 ,  H01J29/52

Abstract: RCA 68,973/68,973A CATHODE STRUCTURE AND METHOD OF OPERATING THE SAME An insulating substrate is provided with a plurality of discrete electrode pads on a surface thereof. A thermionic line cathode, e.g., a directly heated filament, is positioned to one side of the substrate surface and extends across a surface of each one of the electrode pads. An apertured electrode is positioned in spaced relation to the cathode and the electrode pads. The apertured electrode may include a single slit-shaped aperture or a plurality of colinear apertures. The structure may also include a pair of spaced parallel filter plates whose surfaces are disposed in parallel relation to the longitudinal axis of the line cathode and in orthogonal relation to the surfaces of the electrode pads. The filter plates function to collimate the electron flow emitted from the cathode.

公开(公告)号：FR2371769A1

公开(公告)日：1978-06-16

申请号：FR7732589

申请日：1977-10-28

Applicant: RCA CORP

IPC: H01J31/12 ,  H01J1/20 ,  H01J3/08 ,  H01J29/04 ,  H01J29/52 ,  H01J1/13 ,  H01J19/04

公开(公告)号：CH543176A

公开(公告)日：1973-10-15

申请号：CH823572

申请日：1972-06-02

Applicant: PHILIPS NV

Inventor： ZUIJLEN PETER VAN ,  LEENDERT ANTONIUS FONTIJN

IPC: H01J37/24 ,  H04N5/63 ,  H01J3/08

公开(公告)号：WO2010040454A1

公开(公告)日：2010-04-15

申请号：PCT/EP2009/006942

申请日：2009-09-25

Applicant: TETRA LAVAL HOLDINGS & FINANCE S.A. ,  HOLM, Kurt

Inventor： HOLM, Kurt

IPC: G21K5/04 ,  B65B55/08 ,  H01J3/08

CPC classification number: G21K5/04 ,  A61L2/087 ,  A61L2/24 ,  A61L2202/181 ,  H01J3/027 ,  H01J3/08 ,  H01J33/00

Abstract: An electron beam sterilizing device, comprises: an electron- generating filament; a beam-shaper; an output window; a high-voltage supply, capable of creating a high-voltage potential between the electron-generating filament and the output window, for acceleration of electrons; a high-voltage supply for driving current through the electron-generating filament; a control unit for controlling the operation of the electron beam sterilizing device. The device is characterized in that the electron beam sterilizing device has at least three operational states: - an OFF-state, where there is no drive current through the electron-generating filament, - an ON-state, where the electron-generating filament is kept at a temperature above the emission temperature so as to generate electrons for sterilization, and - a standby state, between the OFF-state and ON-state, where the electron- generating filament is kept at a predetermined temperature just below the emission temperature, wherein the control unit is able to control the device to assume the standby state.

Abstract translation: 一种电子束消毒装置，包括：电子发生丝; 光束整形器 输出窗口 能够在电子发生丝与输出窗之间产生高压电位的高压电源，用于加速电子; 用于驱动通过电子发生丝的电流的高压电源; 用于控制电子束消毒装置的操作的控制单元。 该装置的特征在于，电子束灭菌装置具有至少三种操作状态： - 通过电子发生丝不存在驱动电流的截止状态， - 产生电子发生丝的导通状态 保持在高于发射温度的温度下，以产生用于灭菌的电子，以及在断开状态和导通状态之间的待机状态，其中电子发生丝保持在正好低于发射温度的预定温度， 其中所述控制单元能够控制所述设备呈现待机状态。

公开(公告)号：US10217599B2

公开(公告)日：2019-02-26

申请号：US14785730

申请日：2015-01-09

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Takashi Sato

IPC: H01J37/065 ,  H01J37/06 ,  H01J37/304 ,  B22F3/105 ,  H01J3/08 ,  H01J3/12 ,  B33Y30/00

Abstract: When an emission current is changed, a decrease in brightness of an electron beam is prevented. An electron gun includes a cathode that emits thermoelectrons, a Wehnelt electrode that focuses the thermoelectrons, a control electrode that extracts the thermoelectrons from a distal end of said cathode, an anode that accelerates the thermoelectrons and irradiates a powder with the thermoelectrons as an electron beam, and an optimum condition collection controller that changes at least one of a bias voltage to be applied to the Wehnelt electrode and a control electrode voltage to be applied to the control electrode, and decides a combination of the bias voltage and the control electrode voltage at which the brightness of the electron beam reaches a peak.

公开(公告)号：US20150270088A1

公开(公告)日：2015-09-24

申请号：US14621526

申请日：2015-02-13

Applicant: JEOL Ltd.

Inventor： Takashi Satoh

IPC: H01J3/08 ,  H01J3/02

CPC classification number: H01J3/08 ,  B22F3/1055 ,  B23K15/002 ,  B23K15/0026 ,  B23K15/0086 ,  B23K15/06 ,  B33Y30/00 ,  H01J3/02 ,  H01J3/024 ,  H01J3/027 ,  H01J37/063 ,  H01J37/305 ,  H01J2237/06308 ,  H01J2237/065 ,  H01J2237/3128 ,  Y02P10/295

Abstract: There is disclosed a method of controlling an electron gun without causing decreases in brightness of the electron beam if a current-limiting aperture cannot be used. The electron gun (10) has a cathode (11), a Wehnelt electrode (12), a control electrode (13), an anode (14), and a controller (22). The Wehnelt electrode (12) has a first opening (12c) in which the tip of the cathode is inserted, and focuses thermal electrons emitted from the tip of the cathode (11). The thermal electrons emitted from the tip of the cathode (11) are caused to pass into a second opening (13c) by the control electrode (13). The anode (14) accelerates the thermal electrons emitted from the cathode (11) such that the thermal electrons passed through the second opening (13c) pass through a third opening (14b) and impinge as an electron beam (B1) on a powdered sample (8). The controller (22) sets the bias voltage and the control voltage based on combination conditions of the bias voltage and control voltage to maintain the brightness of the beam constant.

Abstract translation: 如果不能使用限流孔，则公开了一种控制电子枪而不引起电子束亮度降低的方法。 电子枪（10）具有阴极（11），Wehnelt电极（12），控制电极（13），阳极（14）和控制器（22）。 Wehnelt电极（12）具有插入阴极顶端的第一开口（12c），并聚焦从阴极（11）的尖端发射的热电子。 从阴极（11）的顶端发射的热电子被控制电极（13）通入第二开口（13c）。 阳极（14）加速从阴极（11）发射的热电子，使得穿过第二开口（13c）的热电子通过第三开口（14b）并作为电子束（B1）撞击在粉末样品上 （8）。 控制器（22）基于偏置电压和控制电压的组合条件设置偏置电压和控制电压，以保持光束的亮度恒定。

公开(公告)号：US20050078789A1

公开(公告)日：2005-04-14

申请号：US10681756

申请日：2003-10-08

Applicant: Robert Miller

Inventor： Robert Miller

IPC: A23L3/26 ,  A61L2/08 ,  A61L2/26 ,  G21G4/00 ,  G21H20060101 ,  G21K5/00 ,  G21K5/04 ,  G21K5/08 ,  G21K5/10 ,  H01J3/08 ,  H01J35/14 ,  H01J35/30

CPC classification number: A61L2/082 ,  A23L3/263 ,  A61L2/087 ,  G21K5/04 ,  G21K5/10

Abstract: This invention is advantageous in irradiating pallets which cannot be irradiated by conventional techniques, even by x-rays, throughout their complete volumes. In one embodiment, a scan horn scans electron beamlets through a sweep angle. A dipole bends the electron beamlets to focus the electron beamlets at the pallet center. After being bent, the beam becomes converted to x-rays which are irradiated through the pallet to the pallet center. During this irradiation, the pallet is moved in a direction substantially perpendicular to the irradiation. In this way, a quarter of the pallet is irradiated. When the quadrant radiation is completed, the radiation is interrupted and the pallet is rotated 90° to have a second side of the pallet face the radiation. The operation is sequentially repeated for each of the pallet sides. The four (4) irradiated quadrants define the pallet's complete cross-sectional area.

Abstract translation: 本发明在其整个体积内，即使通过X射线照射也不能用常规技术照射的托盘是有利的。 在一个实施例中，扫描喇叭通过扫掠角扫描电子束。 偶极弯曲电子束以将电子束聚焦在托盘中心处。 弯曲后，梁被转换成通过托盘照射到托盘中心的X射线。 在该照射期间，托盘在基本上垂直于照射的方向上移动。 以这种方式，四分之一的托盘被照射。 当象限辐射完成时，辐射被中断，托盘旋转90°以使托盘的第二面面对辐射。 对于每个托盘侧面顺序地重复操作。 四（4）个照射的象限定义了托盘的完整横截面积。

公开(公告)号：US5386172A

公开(公告)日：1995-01-31

申请号：US882436

申请日：1992-05-13

Applicant: Hiroshi Komatsu

Inventor： Hiroshi Komatsu

IPC: H01J1/304 ,  H01J1/46 ,  H01J1/52 ,  H01J3/08 ,  H01J3/40 ,  H01J9/02 ,  H01J19/24 ,  H01J19/38 ,  H01J21/10 ,  H01J1/02 ,  H01J1/16

CPC classification number: H01J21/105 ,  H01J1/3042 ,  H01J9/025

Abstract: A multiple electrode field electron emission device is formed on an insulating layer disposed on a surface of an insulated flat substrate and has a cathode with multiple of emission projections each having a projection tip that overhangs the insulating layer. The device further includes an anode for collecting electrons ejected from the cathode emission projections formed on the surface of the substrate. Control electrodes, having one of several alternate configurations, are formed between the cathode and the anode. The device is fabricated using over-etching and directional particulate deposition techniques.

Abstract translation: 在设置在绝缘平坦基板的表面上的绝缘层上形成多电极场电子发射装置，并且具有多个发射突起的阴极，每个发射突起均具有突出绝缘层的突出端。 该装置还包括用于收集从形成在基板的表面上的阴极发射突起喷出的电子的阳极。 在阴极和阳极之间形成具有若干备选配置之一的控制电极。 该器件使用过蚀刻和定向微粒沉积技术制造。

公开(公告)号：US4150319A

公开(公告)日：1979-04-17

申请号：US835616

申请日：1977-09-22

Applicant: David J. Nowak ,  James E. Rice ,  Donald R. Bianco

Inventor： David J. Nowak ,  James E. Rice ,  Donald R. Bianco

IPC: G21K1/04 ,  H01J1/88 ,  H01J3/08 ,  H01J1/46 ,  H01J1/52 ,  H01J17/04 ,  H01J17/12

CPC classification number: H01J49/061 ,  G21K1/04 ,  H01J1/88 ,  H01J3/08 ,  G01N27/622

Abstract: A grid gates a stream of ions when a D.C. potential is applied between two sets of interdigitated wires included in the grid to produce a D.C. field. The improved grid disclosed herein contains the two sets of interdigitated wires in a single plane so that the D.C. field is precisely normal to the ion current flow direction to prevent a residual ion current flow when the grid provides the gating effect.

Abstract translation: 当在电网中包括的两组交叉电线之间施加直流电位以产生直流电场时，栅极栅极离子流。 本文公开的改进的电网在单个平面中包含两组交叉导线，使得直流电场精确地垂直于离子电流流动方向，以防止当栅极提供门控效应时残留的离子电流流动。

公开(公告)号：CA2319395A1

公开(公告)日：1999-08-05

申请号：CA2319395

申请日：1999-01-29

Applicant: SI DIAMOND TECHN INC

Inventor： ROBINDER RONALD CHARLES ,  YANIV ZVI

IPC: H01J3/30 ,  H01J1/304 ,  H01J1/316 ,  H01J3/02 ,  H01J3/08 ,  H01J3/18 ,  H01J29/04 ,  H01J29/46 ,  H01J29/52 ,  H01J29/62 ,  H01J29/74 ,  H01J31/12 ,  H01J1/46 ,  H01J63/04 ,  H01J21/10 ,  H01J1/62

Abstract: A plurality of field emission cathodes (601) generate an emission of electrons, wherein the emission of electrons is then controlled and focused using various electrodes (602, 603, 604) to produce an electron beam. Horizontal and vertical deflection techniques (605, 606, respectively), similar to those used within a cathode ray tube, operate to scan the individual electron beams onto portions of a phosphor screen (401) in order to generate images. The use of the plurality of field emission cathodes provides for a flatter screen depth than possible with a typical cathode ray tube.