公开(公告)号：EP0933799A1

公开(公告)日：1999-08-04

申请号：EP98310072.8

申请日：1998-12-08

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

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

IPC: H01J31/12 ,  H01J9/02

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：EP0869534A3

公开(公告)日：1998-11-18

申请号：EP98112612.1

申请日：1995-01-19

Applicant: PHOTOELECTRON CORPORATION

Inventor： Dinsmore, Mark T. ,  Smith, Donald O.

IPC: H01J35/32 ,  H01J35/30

CPC classification number: A61N5/1001 ,  A61B90/11 ,  A61B2090/101 ,  A61N2005/1005 ,  H01J35/065 ,  H01J35/08 ,  H01J35/30 ,  H01J35/32 ,  H01J2201/342 ,  H05G1/06 ,  H05G1/10 ,  H05G1/32 ,  H05G1/34

Abstract: This invention is directed to an x-ray source comprising a housing (12), a power supply (12A), an elongated tubular probe (14), a target assembly (26), and a beam steering assembly (29). The housing encloses an electron beam source (22), and has elements for generating an electron beam along a beam path. The power supply (12A) is programmable to control the voltage, current and timing of assembly (26) extends along the central axis and is adapted for coupling to end of the probe (14) distal from the housing (12). The target assembly (26) includes target element (26A) positioned along the beam path, wherein the target element (26A) is adapted to emit x-rays in a predetermined spectral range in response to incident electrons. The beam steering assembly (29) includes a deflection element (30), a feedback network (31) and a deflection controller (144). The deflection element (30) deflects the beam from a nominal axis to a selected surface region on the target element (26) in response to a deflection control signal. The feedback network (31) includes deflection sensing elements for sensing the deflection of the beam and elements for generating feedback signal representative thereof.

Abstract translation: 本发明涉及包括外壳（12），电源（12A），细长管状探头（14），靶组件（26）和射束转向组件（29）的X射线源。 壳体包围电子束源（22），并具有用于沿着光束路径产生电子束的元件。 电源（12A）是可编程的，以控制组件（26）的电压，电流和定时沿着中心轴线延伸并适于耦合到远离壳体（12）的探针（14）的末端。 目标组件（26）包括沿着光束路径定位的目标元件（26A），其中目标元件（26A）适于响应入射电子发射预定光谱范围内的X射线。 波束转向组件（29）包括偏转元件（30），反馈网络（31）和偏转控制器（144）。 偏转元件（30）响应于偏转控制信号将光束从标称轴偏转到目标元件（26）上的选定表面区域。 反馈网络（31）包括用于检测光束偏转的偏转检测元件和用于产生代表其反馈信号的元件。

公开(公告)号：EP0861501A1

公开(公告)日：1998-09-02

申请号：EP97934231.0

申请日：1997-07-18

Applicant: VARIAN ASSOCIATES, INC.

Inventor： ANDERSON, Weston, A.

IPC: H01J35

CPC classification number: H01J35/24 ,  H01J35/065 ,  H01J2201/342 ,  H01J2235/1266 ,  H01J2235/162

Abstract: An X-ray tube has an anode and a photocathode inside a vacuum envelope and an electron multiplier is disposed between them. Such an electron multiplier may be a plurality of sequentially disposed dynodes or a microchannel plate. Because of the secondary electron emission from the electron multiplier, a higher-power radiation is obtained without requiring a high optical power level to generate photoelectrons. The vacuum envelope may be of a rotary type with the anode and photocathode having annular regions.

Abstract translation: X射线管在真空外壳内部具有阳极和光电阴极，并且在它们之间设置有电子倍增器。 这样的电子倍增器可以是多个顺序设置的倍增电极或微通道板。 由于来自电子倍增器的二次电子发射，获得较高功率的辐射而不需要高的光学功率水平来产生光电子。 真空外壳可以是旋转型的，阳极和光电阴极具有环形区域。

公开(公告)号：EP0770258A1

公开(公告)日：1997-05-02

申请号：EP95925598.0

申请日：1995-07-11

Applicant: PHOTOELECTRON CORPORATION

Inventor： SMITH, Donald, O. ,  SLISKI, Alan, P. ,  HARTE, Kenneth, J.

IPC: G21K5 ,  A61B1 ,  A61N5 ,  G01N23 ,  H01J35 ,  H05G1

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

Abstract: The present invention is directed to an x-ray source (10) for irradiating a surface defining a body cavity. The source comprises a housing (12), an elongated tubular probe (14), a target assembly (26), and an inflatable balloon (410). The housing (12) encloses an electron beam source (22) and includes elements (23) for generating an electron beam along a beam path. The tubular probe (14) extends along a central axis from the housing (12) about the beam path. The target assembly (26) extends along the central axis and is coupled to the probe distal end. The target assembly (26) includes a target element (26A, 26B) adapted to emit x-rays in response to electrons incident thereon. 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 (410) affixed to the distal end is inflatable so as to be inflated to stretch the cavity to a shape, thus allowing a uniform delivery of dose of radiation to the surface defining a body cavity.

公开(公告)号：EP0251830B1

公开(公告)日：1990-07-11

申请号：EP87401020.0

申请日：1987-05-04

Applicant: THOMSON-CSF

Inventor： Tran Duc Tien ,  Faillon, Georges

IPC: H01J23/04 ,  H01J25/04 ,  H01J3/02

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