公开(公告)号：US20040094755A1

公开(公告)日：2004-05-20

申请号：US10705901

申请日：2003-11-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Toru Hirohata ,  Minoru Niigaki ,  Tomoko Mochizuki ,  Masami Yamada

IPC: H01L029/06

CPC classification number: H01J1/34 ,  H01J2201/342

Abstract: The invention relates to a photocathode having a structure that permits a decrease in the radiant sensitivity at low temperatures is suppressed so that the S/N ratio is improved. In the photocathode, a light absorbing layer is formed on the upper layer of a substrate. An electron emitting layer is formed on the upper layer of the light absorbing layer. A contact layer having a striped-shape is formed on the upper layer of the electron emitting layer. A surface electrode composed of metal is formed on the surface of the contact layer. The interval between bars in the contact layer is adjusted so as to become 0.2 nullm or more but 2 nullm or less.

Abstract translation: 本发明涉及具有抑制低温下的辐射灵敏度降低的结构的光电阴极，从而提高S / N比。 在光电阴极中，在基板的上层形成有光吸收层。 在光吸收层的上层形成电子发射层。 具有条纹状的接触层形成在电子发射层的上层。 在接触层的表面上形成由金属构成的表面电极。 调整接触层中的条之间的间隔，使其变为0.2μm以上2μm以下。

公开(公告)号：US06324257B1

公开(公告)日：2001-11-27

申请号：US09325703

申请日：1999-06-03

Applicant: Uriel Halavee

Inventor： Uriel Halavee

IPC: H01J3506

CPC classification number: A61N5/1001 ,  H01J35/32 ,  H01J2201/342 ,  H01J2235/06

Abstract: The present invention related to miniaturized x-ray tubes, that enable radiation treatment by locating the x-ray source within a human body in close vicinity to or inside of the area to be treated with X-rays. Advantageously, the present invention eliminates most of the problems related to the methods based on a radioactive source and offers a method for efficient and controllable radiation treatment.

Abstract translation: 本发明涉及小型化X射线管，能够通过将X射线源定位在与X射线进行治疗的区域附近或内部的人体内进行放射线治疗。 有利地，本发明消除了与基于放射源的方法相关的大多数问题，并且提供了一种用于有效和可控的辐射治疗的方法。

公开(公告)号：US06181307B2

公开(公告)日：2001-01-30

申请号：US09118519

申请日：1998-07-17

Applicant: John Stuart Beeteson ,  Andrew Ramsay Knox ,  Anthony Cyril Lowe

Inventor： John Stuart Beeteson ,  Andrew Ramsay Knox ,  Anthony Cyril Lowe

IPC: G09G322

CPC classification number: H01J1/34 ,  H01J29/04 ,  H01J2201/342

Abstract: A photo-cathode electron source suitable for use in flat panel displays has an extractor grid means (104) maintained, in use, at a positive potential with respect to the photo-cathode surface. The extractor grid may be used as a carrier for unfired photoemissive material which forms the emission surface of the photo-cathode. The material is deposited on the surface (103) of the photo-cathode means (102) by means of evaporation from the extractor grid (104).

Abstract translation: 适用于平板显示器的光阴极电子源具有在使用中在相对于光 - 阴极表面处于正电位的维护网格装置（104）。 提取器栅格可以用作形成光阴极的发射表面的未烧制的光发射材料的载体。 材料通过来自提取器格栅（104）的蒸发沉积在光阴极装置（102）的表面（103）上。

公开(公告)号：US5869842A

公开(公告)日：1999-02-09

申请号：US718247

申请日：1996-09-20

Applicant: Sung-Weon Kang ,  Jin-Ho Lee

Inventor： Sung-Weon Kang ,  Jin-Ho Lee

IPC: H01L29/72 ,  G02B6/34 ,  H01J1/304 ,  H01J1/34 ,  H01J40/02 ,  H03K17/00 ,  H03K17/54 ,  H01L29/00

CPC classification number: H03K17/545 ,  H01J1/3042 ,  H01J1/34 ,  H01J40/02 ,  H03K17/005 ,  H03K17/007 ,  H01J2201/30403 ,  H01J2201/342

Abstract: MUX and DEMUX circuits using a photo gate transistor having a pair of thin film electrodes respectively serving as emission and collector electrodes. When photons with at least critical energy are irradiated onto the emission electrode, electrons are emitted from the emission electrode, so that the associated photo gate transistor can carry out a gating operation. The MUX circuit divides a plurality of electrical signals in a time division manner so that the transmission of those signals can be carried out through a single transmission line. The DEMUX circuit recovers an original signal from signals transmitted in a time division manner via a single transmission line. Input signals are received to emission electrodes while being limited in voltage level by input resistor pairs. An optical source irradiates photons to an emission electrode in sync with the application of an input signal. By the irradiation of photons, the emission electrode emits electrons which are transmitted to a collector electrode. As a result, output voltage is output. The output voltage corresponds to the quantity of current of the transmitted signal which is determined by an output resistor in accordance with voltage from a voltage source and the intensity of the irradiated photons.

Abstract translation: 使用具有分别用作发射和集电极的一对薄膜电极的光栅晶体管的MUX和DEMUX电路。 当具有至少临界能量的光子照射到发射电极上时，从发射电极发射电子，使得相关的光栅晶体管可以执行选通操作。 MUX电路以时分方式分割多个电信号，使得这些信号的传输可以通过单个传输线进行。 DEMUX电路通过单个传输线以时分方式传输的信号恢复原始信号。 输入信号被接收到发射电极，同时被输入电阻对限制在电压电平上。 光源与施加输入信号同步地将光子照射到发射电极。 通过光子的照射，发射电极发射被传输到集电极的电子。 结果，输出电压。 输出电压对应于根据来自电压源的电压和照射的光子的强度由输出电阻器确定的发射信号的电流量。

公开(公告)号：US4313072A

公开(公告)日：1982-01-26

申请号：US083484

申请日：1979-10-10

Applicant: Mahlon T. Wilson ,  Paul J. Tallerico

Inventor： Mahlon T. Wilson ,  Paul J. Tallerico

IPC: H01J25/00 ,  H01J3/02 ,  H01J23/04 ,  H01J25/04 ,  H03B9/01 ,  H03K3/42 ,  H01J25/02

CPC classification number: H03B9/01 ,  H01J23/04 ,  H01J25/04 ,  H01J3/021 ,  H01J2201/342

Abstract: The disclosure relates to a light modulated electron beam driven radiofrequency emitter. Pulses of light impinge on a photoemissive device which generates an electron beam having the pulse characteristics of the light. The electron beam is accelerated through a radiofrequency resonator which produces radiofrequency emission in accordance with the electron, hence, the light pulses.

Abstract translation: 本发明涉及一种光调制电子束驱动的射频发射器。 光的脉冲撞击产生具有光的脉冲特性的电子束的光发射装置。 电子束通过射频谐振器加速，该射频谐振器根据电子产生射频发射，因此产生光脉冲。

公开(公告)号：US10074509B2

公开(公告)日：2018-09-11

申请号：US15176147

申请日：2016-06-07

Applicant: Purdue Research Foundation

Inventor： Liang Pan ,  Xianfan Xu

IPC: H01J37/317 ,  H01J37/06 ,  H01J37/10 ,  H01J37/12

CPC classification number: H01J37/10 ,  G02B5/008 ,  H01J37/06 ,  H01J37/073 ,  H01J37/12 ,  H01J37/3174 ,  H01J37/3177 ,  H01J2201/342 ,  H01J2237/0492 ,  H01J2237/062 ,  H01J2237/06333 ,  H01J2237/202 ,  H01J2237/20221

Abstract: A system for generating an electron beam array, comprising a light source, a first substrate having a plurality of plasmonic lenses mounted thereon, the plasmonic lenses configured to received light from the light source and produce an electron emission, and a plurality of electrostatic microlenses configured to focus the electron emissions into a beam for focusing on a wafer substrate. A light source modulator and digital micro mirror may be included which captures light from the light source and projects light beamlets on the plasmonic lenses.

公开(公告)号：US6091186A

公开(公告)日：2000-07-18

申请号：US748690

申请日：1996-11-13

Applicant: Renyu Cao ,  Lawrence Pan ,  German Vergara ,  Ciaran Fox

Inventor： Renyu Cao ,  Lawrence Pan ,  German Vergara ,  Ciaran Fox

IPC: H01J1/30 ,  H01J19/24

CPC classification number: H01J1/30 ,  H01J2201/30446 ,  H01J2201/32 ,  H01J2201/342

Abstract: A cathode has electropositive atoms directly bonded to a carbon-containing substrate. Preferably, the substrate comprises diamond or diamond-like (sp.sup.3) carbon, and the electropositive atoms are Cs. The cathode displays superior efficiency and durability. In one embodiment, the cathode has a negative electron affinity (NEA). The cathode can be used for field emission, thermionic emission, or photoemission. Upon exposure to air or oxygen, the cathode performance can be restored by annealing or other methods. Applications include detectors, electron multipliers, sensors, imaging systems, and displays, particularly flat panel displays.

Abstract translation: 阴极具有直接键合到含碳衬底的正电原子。 优选地，衬底包括金刚石或类金刚石（sp3）碳，正电性原子是Cs。 阴极显示出优异的效率和耐久性。 在一个实施方案中，阴极具有负电子亲和力（NEA）。 阴极可用于场发射，热离子发射或光电发射。 暴露于空气或氧气时，阴极性能可通过退火或其他方法恢复。 应用包括检测器，电子倍增器，传感器，成像系统和显示器，特别是平板显示器。

公开(公告)号：US5621780A

公开(公告)日：1997-04-15

申请号：US507845

申请日：1995-07-27

Applicant: Donald O. Smith ,  Alan P. Sliski ,  Kenneth J. Harte

Inventor： Donald O. Smith ,  Alan P. Sliski ,  Kenneth J. Harte

IPC: G21K5/02 ,  A61B1/00 ,  A61N5/10 ,  G01N23/083 ,  G21K5/00 ,  G21K5/04 ,  G21K5/10 ,  H01J35/08 ,  H01J35/30 ,  H01J35/32 ,  H05G1/06 ,  H05G1/10 ,  H05G1/32 ,  H05G1/34

CPC classification number: A61N5/1001 ,  G21K5/04 ,  H01J35/08 ,  H01J35/30 ,  H01J35/32 ,  H05G1/06 ,  H05G1/10 ,  H05G1/32 ,  H05G1/34 ,  A61N2005/1005 ,  H01J2201/342

Abstract: The present invention is directed to an x-ray source for irradiating a surface defining a body cavity in accordance with a predetermined dose distribution. The source comprises a housing, an elongated tubular probe, a target assembly, and an inflatable balloon. The housing encloses an electron beam source and includes elements for generating an electron beam along a beam path. The tubular probe extends along a central axis from the housing about the beam path. The target assembly extends along the central axis and is coupled to the end of the probe distal from the housing. The target assembly includes a target element is positioned in the beam path. The target element is adapted to emit x-rays in response to electrons incident thereon from the beam. The probe tip assembly and associated control electronics include elements for positioning the target element in the beam path, and is substantially x-ray transparent. The balloon is affixed to the distal end of the probe and is inflatable so that when that probe end is inserted into a body cavity, the balloon may be inflated to stretch the cavity to a known shape. Positioning the probe tip inside the inflated balloon allows delivery of a uniform, or other desired, dose of radiation to the surface defining a body cavity.

Abstract translation: 本发明涉及一种用于根据预定剂量分布照射限定体腔的表面的X射线源。 源包括壳体，细长管状探针，靶组件和可充气球囊。 壳体包围电子束源并且包括用于沿着光束路径产生电子束的元件。 管状探针沿着中心轴线从壳体围绕光束路径延伸。 目标组件沿着中心轴线延伸并且远离壳体耦合到探针的端部。 目标组件包括目标元件位于光束路径中。 目标元件适于响应于从光束入射到其上的电子而发射X射线。 探针尖端组件和相关联的控制电子器件包括用于将目标元件定位在光束路径中的元件，并且基本上是x射线透明的。 气囊固定在探头的远端，并且是可充气的，使得当该探针端插入体腔时，气囊可被充气以将空腔拉伸到已知形状。 将探针尖端定位在充气球囊内部允许将均匀的或其它所需剂量的辐射传送到限定体腔的表面。

公开(公告)号：US5576549A

公开(公告)日：1996-11-19

申请号：US496277

申请日：1995-06-28

Applicant: Erich Hell ,  Manfred Fuchs

Inventor： Erich Hell ,  Manfred Fuchs

IPC: H01J35/06 ,  H01J35/14 ,  H01J29/48

CPC classification number: H01J43/246 ,  H01J35/06 ,  H01J35/14 ,  H01J2201/342

Abstract: An electron generating assembly for an x-ray tube has a thermionic cathode and an electrode system for accelerating electrons emitted by the thermionic cathode, and an electron multiplier disposed in the electron path. In order to achieve a given electron beam density, the electron beam current emitted by the cathode can be reduced dependent on the multiplication factor of the electron multiplier, thereby extending the service life of the overall assembly. The electron multiplier can be controllable.

Abstract translation: 用于X射线管的电子发生组件具有热离子阴极和用于加速由热离子阴极发射的电子的电极系统和设置在电子路径中的电子倍增器。 为了获得给定的电子束密度，阴极发射的电子束电流可以根据电子倍增器的倍增因子而减小，从而延长了整个组件的使用寿命。 电子倍增器可以控制。

公开(公告)号：US4031552A

公开(公告)日：1977-06-21

申请号：US664325

申请日：1976-03-05

Applicant: David A. Bosserman ,  Charles F. Freeman

Inventor： David A. Bosserman ,  Charles F. Freeman

IPC: H01J29/46 ,  H01J31/12 ,  H01J31/50 ,  H04N5/70 ,  H04N5/66

CPC classification number: H01J29/467 ,  H01J31/506 ,  H01J2201/342

Abstract: A miniature flat panel image intensifier display tube having an array of ctrically isolated parallel photocathode array stripes adjacent and orthogonal to a microchannel plate input electrode array comprising electrically isolated parallel metallic stripes. A video picture signal generator modulates a radiation source that causes a generally uniform flow of photons to impinge on the photocathode array. The photoelectrons that are emitted from the photocathode array are selectively accelerated into a charge pattern according to differential voltages scanned across both arrays by array switching electronic means wherein the charge pattern is converted to a visible image for viewing by an observer.

Abstract translation: 一种微型平板图像增强显示管，其具有与包括电隔离的平行金属条纹的微通道板输入电极阵列相邻并正交的电隔离的平行光电阴极阵列条阵列。 视频图像信号发生器调制辐射源，其引起大致均匀的光子流入光电阴极阵列上。 从光电阴极阵列发射的光电子根据通过阵列切换电子装置在两个阵列上扫描的差分电压而选择性地加速成电荷模式，其中电荷模式被转换成可见图像以供观察者观看。