利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

77 条记录 (耗时 0.017 秒)

    X-ray tube with flying focus
    41.
    发明授权
    X-ray tube with flying focus 有权
    具有飞行焦点的X射线管

    公开(公告)号：US06292538B1

    公开(公告)日：2001-09-18

    申请号：US09487281

    申请日：2000-01-19

    申请人： Erich Hell ,  Detlef Mattern ,  Peter Schardt

    发明人： Erich Hell ,  Detlef Mattern ,  Peter Schardt

    IPC分类号： H01J3530

    CPC分类号： A61B6/4021 ,  H01J35/14 ,  H01J35/305

    摘要： X-ray tube with flying focus has a magnet system for deflecting and focusing the electron beam, whereby the magnet system including a carrier that is constructed as an iron yoke and that has four pole projections that are arranged around the axis of the electron beam offset from one another by 90°, on which two pairs of coils (z-coils and &phgr;-coils) are arranged so as to be offset from one another 90°. The individual coils of each pair supplied with a common high-frequency alternating current that deflects the electron beam in the &phgr;-and z-directions, respectively, in a pulsed manner.

    摘要翻译： 具有飞行焦点的X射线管具有用于偏转和聚焦电子束的磁体系统，由此磁体系统包括构造为铁轭的载体，并且具有围绕电子束偏移的轴线布置的四个极突起 彼此相差90°，其中两对线圈（z线圈和phi线圈）被布置成彼此偏移90°。 每对的各个线圈分别提供一个共同的高频交流电流，分别以脉冲方式偏转电子束在phi和z方向。

    Low-cost x-ray radiator
    42.
    发明授权
    Low-cost x-ray radiator 失效
    低成本x射线辐射器

    公开(公告)号：US06213639B1

    公开(公告)日：2001-04-10

    申请号：US09391081

    申请日：1999-09-16

    申请人： Erich Hell ,  Detlef Mattern ,  Thomas Ohrndorf ,  Peter Schardt

    发明人： Erich Hell ,  Detlef Mattern ,  Thomas Ohrndorf ,  Peter Schardt

    IPC分类号： H01J3510

    CPC分类号： H01J35/305 ,  H01J35/106 ,  H01J2235/1216 ,  H01J2235/1262 ,  H05G1/025 ,  H05G1/04

    摘要： An x-ray radiator has a rotary-bulb tube, whose vacuum enclosure rotates inside a radiator housing, which is filled with a liquid cooling medium, and a cooling medium conducting body is arranged between the vacuum enclosure and the radiator housing, at a distance from both of these. The cooling medium conducting body produces a flow of the cooling medium along the vacuum enclosure in the inner gap and a return flow of the cooling medium along the radiator housing in the outer gap, promoted by the rotation of the rotary-bulb tube.

    摘要翻译： X射线辐射器具有旋转灯泡管，其真空外壳在散热器壳体内旋转，其中填充有液体冷却介质，并且冷却介质导电体设置在真空外壳和散热器壳体之间，距离 从这两个。 冷却介质导电体沿着内部间隙中的真空外壳产生冷却介质的流动，并且通过旋转灯管的旋转促进冷却介质沿着外部间隙中的散热器壳体的返回流。

    Anode for an x-ray tube
    44.
    发明授权
    Anode for an x-ray tube 失效
    阳极用于X射线管

    公开(公告)号：US5745546A

    公开(公告)日：1998-04-28

    申请号：US613724

    申请日：1996-03-12

    申请人： Erich Hell ,  Manfred Fuchs

    发明人： Erich Hell ,  Manfred Fuchs

    IPC分类号： H01J35/08 ,  H01J35/10 ,  H01J35/12 ,  H01J35/30

    CPC分类号： H01J35/08 ,  H01J35/30 ,  H01J2235/086

    摘要： An anode for an x-ray tube has an incident surface on which an electron beam is incident for generating x-rays emanating from a focal spot. In at least that region wherein the focal spot is located during operation of the x-ray tube, the incident surface has a step-like structure with end faces that reside at a substantially right angle relative to the electron beam during operation of the x-ray tube. The end faces are connected by respective sidewalls, and backscattered electrons from the end faces strike the sidewalls and generate x-rays in addition to x-rays emanating from the end faces struck by the electron beam, thereby improving the efficiency of x-ray generation. A similar improvement can be achieved by an anode having a roughened surface in the region of the focal spot.

    摘要翻译： 用于X射线管的阳极具有入射表面，在该入射表面上电子束入射以产生从焦点发出的X射线。 至少在X射线管操作过程中焦斑位于其中的区域中，入射表面具有阶梯状结构，其端面在x射线管的操作期间相对于电子束基本上成直角， 射线管。 端面由相应的侧壁连接，并且来自端面的反向散射电子撞击侧壁，并且除了由电子束撞击的端面发出的x射线之外还产生X射线，从而提高x射线产生的效率 。 通过在焦点区域具有粗糙表面的阳极可以实现类似的改进。

    MAGNETIC FIELD UNIT OF AN MRI SYSTEM FOR IMAGE CAPTURING A HEAD REGION
    45.
    发明申请
    MAGNETIC FIELD UNIT OF AN MRI SYSTEM FOR IMAGE CAPTURING A HEAD REGION 有权
    用于图像捕获头部区域的MRI系统的磁场单元

    公开(公告)号：US20120146645A1

    公开(公告)日：2012-06-14

    申请号：US13376066

    申请日：2010-06-23

    申请人： Volker Rasche ,  Erich Hell ,  Johannes Ulrici

    发明人： Volker Rasche ,  Erich Hell ,  Johannes Ulrici

    IPC分类号： G01R33/44

    CPC分类号： G01R33/383 ,  G01R33/3806 ,  G01R33/3875 ,  G01R33/421

    摘要： The invention relates to a magnetic field unit (1) of an MRI system (18) for image capturing a head region as the region to be recorded, comprising at least one permanent magnet (2) for generating a main magnetic field, a device (3) for generating a gradient field, and at least one coil (4) for generating and receiving radio frequencies. The magnetic field unit (1) is fastened to a mounting (19) such that a longitudinal axis (A) of the magnetic field unit (1), together with a vertically extending axis, forms an angle of no more than +45° and that the magnetic field unit (1) and the patient (P) can be adjusted relative to each other such that the magnetic field unit (1) can be moved to a position surrounding the head of the patient (P).

    摘要翻译： 本发明涉及一种MRI系统（18）的磁场单元（1），用于将头部区域图像捕获为要记录的区域，包括至少一个用于产生主磁场的永磁体（2），装置（ 3），以及用于产生和接收射频的至少一个线圈（4）。 磁场单元（1）被紧固到安装件（19），使得磁场单元（1）的纵向轴线（A）连同垂直延伸的轴线形成不大于+ 45°的角度，并且 可以相对于彼此调节磁场单元（1）和患者（P），使得磁场单元（1）可以移动到围绕患者（P）的头部的位置。

    THERMAL INSULATION MATERIAL
    46.
    发明申请
    THERMAL INSULATION MATERIAL 审中-公开
    热绝缘材料

    公开(公告)号：US20090311507A1

    公开(公告)日：2009-12-17

    申请号：US12225948

    申请日：2007-03-14

    申请人： Peter Bauer ,  Erich Hell ,  Peter Nalbach

    发明人： Peter Bauer ,  Erich Hell ,  Peter Nalbach

    IPC分类号： B32B5/16 ,  C08K3/04

    CPC分类号： C08J9/0066 ,  Y10T428/249953

    摘要： A thermal insulation material comprising a porous substrate made of a synthetic resin composition to which particles are applied that essentially have the shape of small plates. The average diameter of the particles can range from 0.1 times to 10 times the average diameter of the pores.

    摘要翻译： 一种保温材料，包括由合成树脂组合物制成的多孔基材，所述多孔基材具有基本上具有小板形状的颗粒。 颗粒的平均直径可以是孔的平均直径的0.1倍至10倍。

    Directly heated thermionic flat emitter
    49.
    发明授权
    Directly heated thermionic flat emitter 有权

    公开(公告)号：US06646366B2

    公开(公告)日：2003-11-11

    申请号：US10202525

    申请日：2002-07-24

    申请人： Erich Hell ,  Detlef Mattern

    发明人： Erich Hell ,  Detlef Mattern

    IPC分类号： H01J3506

    CPC分类号： H01J1/16 ,  H01J35/06

    摘要： A directly heated thermionic flat emitter has an emission surface divided by slots into interconnects that have respective terminal lugs forming power leads arranged at a peripheral edge. A number of segments are connected by respective narrow webs to the outermost interconnects of the emitter but have no connection to one another. The webs are arranged and dimensioned such that practically no current can flow from the interconnects to the segments and so that thermal conduction to the segments is largely suppressed.

    Radiation converter having an electron multiplier
    50.
    发明授权
    Radiation converter having an electron multiplier 失效
    具有电子倍增器的辐射转换器

    公开(公告)号：US06566809B1

    公开(公告)日：2003-05-20

    申请号：US09655649

    申请日：2000-09-05

    申请人： Manfred Fuchs ,  Erich Hell ,  Wolfgang Knuepfer ,  Detlef Mattern

    发明人： Manfred Fuchs ,  Erich Hell ,  Wolfgang Knuepfer ,  Detlef Mattern

    IPC分类号： H01J3150

    CPC分类号： H01J31/48 ,  H01J31/49

    摘要： A radiation converter includes a radiation absorber for generating light photons dependent on the intensity of incident radiation following the radiation absorber by a photocathode, an electrode system for accelerating the electrons emanating from the photocathode onto an electron detector for generating electrical signals dependent on the incident electrons, and an electron multiplier arranged between the photocathode and the electron detector. The electrons emanating from the photocathode are multiplied by the electron multiplier.

    摘要翻译： 辐射转换器包括：放射线吸收体，其依赖于通过光电阴极在辐射吸收体之后的入射辐射强度产生光子;用于将从光电阴极发射的电子加速到电子检测器上以产生取决于入射电子的电信号 以及布置在光电阴极和电子检测器之间的电子倍增器。 从光电阴极发出的电子乘以电子倍增器。