公开(公告)号：US20070228922A1

公开(公告)日：2007-10-04

申请号：US11703406

申请日：2007-02-08

Applicant: Mamora Nakasuji

Inventor： Mamora Nakasuji

IPC: H01J29/00

CPC classification number: H01J3/029 ,  H01J37/061 ,  H01J2237/061 ,  H01J2237/06375 ,  H01J2237/065 ,  H01J2237/2817

Abstract: For three types of the electron gun the brightness larger than Langmuir limit or the very high Emittance is obtained through a simulation. The first electron gun consists of a concave cathode and a convex anode, and for the gun with the cathode radius of Rc (mm) the emission current Ie (A) which give the brightness larger than Langmuir limit is in the range as, 0.733Rc−0.5≦Ie≦0.159Rc3+0.35. Rc≦2.5 mm, or 0.733Rc−0.5≦Ie≦0.255Rc3−1.17. Rc>2.5 mm. The second electron gun consist of a flat cathode and a convex anode, and for the gun with a distance between the cathode and the anode of Dac (mm) the emission current Ie (mA) which give the brightness larger than Langmuir limit or the very high Emittance is in the range as, 0.388/Dac−0.046≦Ie≦92.8/Dac+9.28, Dac≧3 mm, or 0.388/Dac−0.046≦Ie≦22/Dac+32.7, Dac 120 μm).

公开(公告)号：US07078863B2

公开(公告)日：2006-07-18

申请号：US10381477

申请日：2001-09-27

Applicant: Tetsuya Ide ,  Junichi Sawahata ,  Masao Urayama

Inventor： Tetsuya Ide ,  Junichi Sawahata ,  Masao Urayama

IPC: G09G3/10

CPC classification number: H01J29/488 ,  H01J1/304 ,  H01J3/021 ,  H01J3/029 ,  H01J29/467 ,  H01J2329/00

Abstract: A cold-cathode electron source having an improved utilization efficiency of an electron beam and a simple structure. The cold-cathode electron source comprises a gate electrode (4) provided on a substrate (2) through an insulating layer (3) and an emitter (6) extending through the insulating layer (3) and the gate electrode (4) and disposed in an opening of the gate. During the emission of electrons from the emitter (6), the following relationships are satisfied: 10 [V/μm]≧(Va−Vg)/(Ha−Hg)≧Vg/Hg; and Vg/Hg [V/μm]≧Va×10−4×(9.7−1.3×1n(Hg))×(1000/Ha)0.5, where Ha [μm] is an anode-emitter distance, Va [V] is an anode-emitter voltage, Hg [μm] is a gate-emitter distance, and Vg [V] is a gate-emitter voltage.

Abstract translation: 具有提高电子束的利用效率和简单结构的冷阴极电子源。 冷阴极电子源包括通过绝缘层（3）设置在基板（2）上的栅极（4）和延伸穿过绝缘层（3）和栅电极（4）的发射极（6） 在门口的开口。 在从发射体（6）发射电子的过程中，满足以下关系：10 V / V m =（Va-Vg）/（Ha-Hg）> = Vg / Hg; 和Vg / Hg [V / mum] = Vax10-4×（9.7-1.3x1n（Hg））x（1000 / Ha）<0.5>其中Ha ]是阳极 - 发射极距离，Va [V]是阳极 - 发射极电压，Hg [m]是栅 - 发射极距离，Vg [V]是栅 - 发射极电压。

公开(公告)号：US06794822B2

公开(公告)日：2004-09-21

申请号：US10293539

申请日：2002-11-12

Applicant: Keisuke Koga ,  Toru Kawase ,  Masahide Yamauchi ,  Koji Fujii ,  Takashi Itoh

Inventor： Keisuke Koga ,  Toru Kawase ,  Masahide Yamauchi ,  Koji Fujii ,  Takashi Itoh

IPC: H01J2308

CPC classification number: H01J3/021 ,  H01J3/029 ,  H01J29/46 ,  H01J29/481 ,  H01J29/488

Abstract: A field emission electron source includes: a field emission array portion composed of an insulation layer with a plurality of apertures, which is formed on a substrate, an extraction electrode formed on the insulation layer, and a plurality of cathodes formed respectively on the substrate in the plurality of apertures; a cathode base for fixing the field emission array portion; and an electron lens portion composed of a plurality of electrode members having a function of accelerating and converging an electron beam emitted from the field emission array portion. An emission axis of the electron beam emitted from the field emission array portion has a predetermined angle with respect to an optical axis of the electron lens portion. Thus, the field emission array portion can be protected from impact caused by ions generated in the electron lens portion, thereby improving the life of a field emission electron source.

Abstract translation: 场发射电子源包括：场致发射阵列部分，其由具有多个孔的绝缘层组成，形成在衬底上，形成在绝缘层上的引出电极和分别形成在衬底上的多个阴极 多个孔; 用于固定场致发射阵列部分的阴极基座; 以及电子透镜部分，其由具有加速和会聚从场发射阵列部分发射的电子束的功能的多个电极部件组成。 从场发射阵列部分发射的电子束的发射轴相对于电子透镜部分的光轴具有预定的角度。 因此，可以防止场发射阵列部分免受在电子透镜部分中产生的离子的影响，从而提高场发射电子源的寿命。

公开(公告)号：US4543509A

公开(公告)日：1985-09-24

申请号：US491400

申请日：1983-05-04

Applicant: Ronald M. Hutcheon

Inventor： Ronald M. Hutcheon

IPC: H01J37/06 ,  H01J3/02 ,  H05H7/08 ,  H01J29/48 ,  H01J29/62

CPC classification number: H01J3/029

Abstract: The purpose of the off-axis electron gun is to generate a beam of electrons and to deflect the beam onto the axis of a device which utilizes the beam. The off-axis electron gun includes an arcuate wire electron emitting source subtending an azimuthal angle of up to 125.degree., a non-intercepting azimuthally asymmetric focussing and deflecting electrode located at and around the electron source, and an anode plate with a beam exit hole. The non-intercepting electrode has an arcuate slot subtending a predetermined angle at a predetermined radius from the beam axis in which the arcuate wire electron source is mounted in electrical isolation from the electrode. The deflecting section of the electrode is azimuthally asymmetric in shape such that when selected voltages are applied between the wire source, the focussing and deflecting sections of the non-intercepting electrode and the anode, an electric field is produced which directs the electrons towards the axis, focusses the beam and deflects it onto the axis.

Abstract translation: 离轴电子枪的目的是产生电子束并将光束偏转到利用光束的装置的轴上。 离轴电子枪包括对角方位角高达125°的弓形线电子发射源，位于电子源和其周围的不被截获的方位不对称聚焦和偏转电极，以及具有光束出射孔的阳极板 。 非截止电极具有弧形狭槽，该弧形狭槽以与电极隔离的方式安装弧形线电子源的光束轴以预定半径对准预定角度。 电极的偏转部分的形状是方位不对称的，使得当在线源，非截止电极和阳极的聚焦和偏转部分之间施加选定的电压时，产生电场朝向轴线引导的电场 ，聚焦光束并将其偏转到轴上。

公开(公告)号：US4321505A

公开(公告)日：1982-03-23

申请号：US140073

申请日：1980-04-14

Applicant: George V. Miram ,  Gerhard B. Kuehne

Inventor： George V. Miram ,  Gerhard B. Kuehne

IPC: H01J1/46 ,  H01J3/02 ,  H01J23/065 ,  H01J29/46

CPC classification number: H01J23/065 ,  H01J1/46 ,  H01J3/029

Abstract: A gun for a linear-beam electron tube has a control grid for modulating the beam current which consists of an array of conductive web elements whose spacing from each other is much larger than their spacing from the concave emissive surface of the cathode. It was found that when this condition is met the grid can be operated at cathode potential while beam current is being drawn without distorting the electric accelerating field enough to ruin the focusing of the beam. Thus, when the grid is used to pulse the beam current on and off, it can have zero bias in the "on" condition, whereby the pulse modulator can be greatly simplified.

Abstract translation: 用于线性束电子管的枪具有用于调制束电流的控制栅格，该栅极电流由导电网状元件阵列组成，它们彼此的间隔比它们与阴极的凹形发射表面的间隔大得多。 已经发现，当满足这种条件时，栅极可以在阴极电位下操作，而束电流被拉伸而不使电加速场扭曲到足以破坏光束的聚焦。 因此，当栅格用于脉冲束电流通/断时，它可以在“导通”状态下具有零偏置，从而可以大大简化脉冲调制器。

公开(公告)号：US3912930A

公开(公告)日：1975-10-14

申请号：US40096273

申请日：1973-09-26

Applicant: PHYSICS INT CO

Inventor： CREEDON JOHN MICHAEL ,  PUTNAM SIDNEY DARWIN

IPC: H01J3/02 ,  H01J3/14

CPC classification number: H01J3/029

Abstract: An apparatus for focusing electrons incorporates a cathode and an anode in which electrons are caused to flow along equipotential lines or surfaces that converge toward a common point at or near the anode with the end of the cathode facing the anode having a cavity and with a wire or conductor connected to the anode or an independent electron beam injected along the axis to establish a conducting path to the anode through the focal point of the electron flow pattern.

公开(公告)号：US3852637A

公开(公告)日：1974-12-03

申请号：US22064172

申请日：1972-01-25

Applicant: HITACHI LTD

Inventor： YAMAZAKI E ,  KANAI H

IPC: H01J3/02 ,  H01J29/48 ,  H01J29/56

CPC classification number: H01J3/029 ,  H01J29/488

Abstract: An electron gun structure having a main focusing lens including a unipotential electron lens and a bipotential electron lens, the unipotential and bipotential electron lenses serving as a single main electron lens having a larger effective aperture thereby greatly reducing aberration.

Abstract translation: 具有包括单能电子透镜和双电子透镜的主聚焦透镜的电子枪结构，用作具有较大有效孔径的单个主电子透​​镜的单电位和双电子透镜，从而大大降低像差。

公开(公告)号：US3843902A

公开(公告)日：1974-10-22

申请号：US43967474

申请日：1974-02-04

Applicant: VARIAN ASSOCIATES

Inventor： MIRAM G ,  KUEHNE G

IPC: H01J3/02 ,  H01J23/065 ,  H01J1/48 ,  H01J1/94 ,  H01J19/48

CPC classification number: H01J3/029 ,  H01J3/026 ,  H01J23/065

Abstract: A gridded convergent flow electron gun employs a dimpled oxide coated thermionic cathode emitter facing a centrally apertured accelerating anode. A multiapertured control grid is interposed in the space between the dimpled oxide coated cathode and the anode for pulsing the electron beam. A multiapertured shadow grid is disposed overlaying the emitting surface of the cathode emitter with the apertures of the shadow grid being in alignment and in registration with the respective dimpled areas of the emitter and the corresponding apertures in the control grid for projecting a multiplicity of non-intercepting convergent flow beamlets through the individual holes in the control grid. The shadow grid is placed in nominal contact with the cathode emitter and is made of a material having essentially the same coefficient of thermal expansion as the cathode. In a preferred embodiment, the cathode includes a nickel base member and the shadow grid is made of nickel.

Abstract translation: 网格收敛流电子枪采用面向中心多孔加速阳极的凹凸氧化物涂层热电子阴极发射体。 多孔化控制栅格插入在凹凸氧化物涂覆的阴极和阳极之间的空间中，用于脉冲电子束。 多个投影的阴影栅格被布置为覆盖阴极发射器的发射表面，其中阴影栅格的孔对准并与发射器的相应的凹坑区域对准，并且控制栅格中的相应孔径突出， 拦截收敛流束通过控制网格中的各个孔。 阴影栅格被放置为与阴极发射体标称接触，并且由具有与阴极基本相同的热膨胀系数的材料制成。 在优选实施例中，阴极包括镍基构件，阴影栅格由镍制成。

公开(公告)号：US3780334A

公开(公告)日：1973-12-18

申请号：US3780334D

申请日：1972-05-31

Applicant: THOMSON CSF

Inventor： LEBOUTET H

IPC: C08J7/00 ,  H01J3/02 ,  H01J33/00 ,  H01J29/46

CPC classification number: H01J33/00 ,  H01J3/029

Abstract: A vacuum tube for producing a wide high-uniformity beam of fast accelerated electrons. The tube comprises an evacuated enclosure provided with an electron transparent window and containing an elongated cathode, accelerator electrodes and a control electrode formed by sleeves electrically insulated from one another and brought to separately adjustable potentials.

Abstract translation: 一种用于产生快速加速电子的宽均匀度束的真空管。 该管包括设置有电子透明窗口并且包含细长阴极，加速器电极和由彼此电绝缘的套筒形成的控制电极的抽空外壳，并分别调节电位。

公开(公告)号：US3714504A

公开(公告)日：1973-01-30

申请号：US3714504D

申请日：1970-10-20

Applicant: AMBOSS K

Inventor： AMBOSS K

IPC: H01J3/02 ,  H01J29/62 ,  H01J29/56

CPC classification number: H01J29/624 ,  H01J3/029

Abstract: A system wherein spherical aberration is reduced in an electronoptic device having post deflection acceleration by connecting the focusing electrode of an ''''einzel'''' type electrostatic electron lens to a unitary source of potentials at a potential more positive than the potential connected to the electrodes disposed on either side of the focusing electrode. In every case, the same supply above mentioned provides all the potentials necessary to operate the device.

Abstract translation: 通过将“einzel”型静电电子透镜的聚焦电极连接到电位的单一电位的电位比连接到设置的电极的电位更正的电位，在具有后偏转加速度的电子光学器件中球面像差减小的系统 在聚焦电极的两侧。 在每种情况下，上述相同的电源提供了操作设备所需的所有可能性。