公开(公告)号：US5841831A

公开(公告)日：1998-11-24

申请号：US847622

申请日：1997-04-28

申请人： Erich Hell ,  Peter Schardt ,  Guenter Schwierz

发明人： Erich Hell ,  Peter Schardt ,  Guenter Schwierz

IPC分类号： A61B6/03 ,  G01N23/00

CPC分类号： A61B6/4028 ,  A61B6/032

摘要： In an x-ray computed tomography apparatus the source of X-rays and the detector are able to scan a volume of the examination subject in a short time. The X-ray source contains an anode that is elongated in the z-direction, on which the focus travels by a controlled deflection of an electron beam. A primary beam diaphragm is displaced synchronously with the focus movement along the anode. The diaphragm forms a pyramid-shaped X-ray beam which always fully strikes the detector but does not overshot the detector. The detector is formed by a matrix of detector elements.

摘要翻译： 在X射线计算机断层摄影装置中，X射线源和检测器能够在短时间内扫描检查对象的体积。 X射线源包含在z方向上伸长的阳极，焦点通过电子束的可控偏转行进。 主光束光阑与沿阳极的聚焦移动同步移动。 光阑形成一个金字塔形X射线束，它始终完全撞击检测器，但不会超过检测器。 检测器由检测器元件的矩阵形成。

公开(公告)号：US5822395A

公开(公告)日：1998-10-13

申请号：US940269

申请日：1997-09-29

申请人： Peter Schardt ,  Erich Hell

发明人： Peter Schardt ,  Erich Hell

IPC分类号： H01J35/14 ,  H05G1/60

CPC分类号： H01J35/305 ,  H01J35/14

摘要： An x-ray tube with vario-focus has an evacuated housing in which are arranged, rigidly connected thereto, an electron-emitting cathode and an anode dish which is struck by the electron beam, accelerated with an electrical field. An electromagnetic system for deflecting and focusing the electron beam is provided, and has a number of current-permeated coil elements. A lateral x-ray beam exit window is provided in the housing for the x-rays, which emerge at substantially a right angle relative to the longitudinal middle axis. The x-rays are picked up by an image receiver following a subject table. At least the anode dish is tiltable relative to the connecting axis to the image receiver, and the electromagnetic system at least partially surrounds a cathode-side neck section of the housing, and generates a quadrupole field for modifying the electron beam cross-section, corresponding to the tilt angle.

摘要翻译： 具有变焦的X射线管具有抽真空的壳体，其中刚性连接到其上，电子发射阴极和阳极盘被电子束撞击，并被电场加速。 提供了用于使电子束偏转和聚焦的电磁系统，并且具有多个电流渗透线圈元件。 在外壳中设置横向X射线束出射窗，用于X射线，其相对于纵向中间轴线基本上成直角地出射。 X射线由受试者表之后的图像接收器拾取。 至少阳极盘相对于与图像接收器的连接轴线可倾斜，并且电磁系统至少部分地围绕壳体的阴极侧颈部，并且产生用于修改电子束横截面的四极场，对应于 到倾斜角度。

公开(公告)号：US5703924A

公开(公告)日：1997-12-30

申请号：US627999

申请日：1996-04-04

申请人： Erich Hell ,  Helmut Kuhn ,  Mathias Hoernig

发明人： Erich Hell ,  Helmut Kuhn ,  Mathias Hoernig

IPC分类号： H01J35/06 ,  H01J35/10 ,  H01J35/16

CPC分类号： H01J35/16 ,  H01J35/06 ,  H01J2235/168

摘要： An x-ray tube has an anode and an electron emitter from which an electron beam emanates, the electron beam impinging the incident surface of the anode in a focal spot from which a useful x-ray beam emanates. At least in the region of its electron-emitting surface, the electron emitter is formed of an electron-emitting material that has a lower electron affinity than tungsten (a low-temperature emitter). Further, an apertured diaphragm at anode potential is arranged between the electron emitter and the anode and through which the electron beam passes. As electron-emitting material, the electron emitter contains lanthanum hexaboride (LaB.sub.6) or an alloy of the systems iridium/cerium (Ir/Ce) or iridium/lanthanum (Ir/La) systems.

摘要翻译： X射线管具有阳极和电子发射器，电子束从该电子发射，电子束将阳极的入射表面照射在可用的X射线束发射的焦斑中。 至少在其电子发射表面的区域中，电子发射体由电子发射材料形成，该电子发射材料具有比钨更低的电子亲和力（低温发射极）。 此外，在电子发射极和阳极之间设置阳极电位的有孔隔膜，电子束通过该隔膜。 作为电子发射材料，电子发射体含有六硼化镧（LaB6）或铱/铈（Ir / Ce）或铱/镧（Ir / La）体系的合金。

公开(公告)号：US5633906A

公开(公告)日：1997-05-27

申请号：US632385

申请日：1996-04-10

申请人： Erich Hell ,  Manfred Fuchs

发明人： Erich Hell ,  Manfred Fuchs

IPC分类号： A61B6/03 ,  G01N23/04 ,  H01J35/30

CPC分类号： A61B6/032 ,  A61B6/4028 ,  G01N23/046 ,  H01J35/30 ,  G01N2223/419

摘要： In an x-ray beam computed tomography apparatus having a ring anode scanned by an electron beam for producing an x-ray beam which rotates around an examination region, measurement of the intensity distribution in the electron beam is enabled at various locations of the ring anode during operation. For this purpose, the ring anode can have at a number of locations around its circumferential direction, insulated sub-anodes with an insulating interspace therebetween, to which a measuring arrangement for measuring the charge distribution, and thus the intensity distribution, in the electron beam is connected. The charge distribution is measured when the electron beam sweeps the interspace between two sub-anodes.

摘要翻译： 在具有通过电子束扫描的环形阳极以产生围绕检查区域旋转的X射线束的X射线束计算机断层摄影装置中，在环形阳极的各个位置处测量电子束中的强度分布 在运行期间。 为此，环形阳极可以在其圆周方向上具有多个位置，在其之间具有绝缘间隙的绝缘子阳极，测量电子分布的测量装置以及因此电子束中的强度分布 已连接。 当电子束扫描两个子阳极之间的间隙时，测量电荷分布。

公开(公告)号：US5624191A

公开(公告)日：1997-04-29

申请号：US500587

申请日：1995-07-11

申请人： Manfred Fuchs ,  Erich Hell

发明人： Manfred Fuchs ,  Erich Hell

IPC分类号： F16C33/04 ,  F16C33/10 ,  H01J35/10 ,  F16C32/06

CPC分类号： F16C33/103 ,  F16C33/04 ,  H01J35/101 ,  H01J2235/106 ,  H01J2235/1086

摘要： The invention is directed to a plain bearing part for a liquid metal lubricated plain bearing, the plain bearing part having a bearing surface that is in contact with a liquid metal during operation. This bearing surface is provided with a layer of a metal effective as diffusion barrier for the liquid metal and which is well wetted with the liquid metal. The layer is applied according to a PVD process.

摘要翻译： 本发明涉及一种用于液态金属润滑的滑动轴承的滑动轴承部件，滑动轴承部件具有在操作期间与液体金属接触的支承表面。 该支承表面设置有作为液态金属的扩散阻挡层有效的金属层，并且被液体金属良好地润湿。 该层根据PVD工艺应用。

公开(公告)号：US5576549A

公开(公告)日：1996-11-19

申请号：US496277

申请日：1995-06-28

申请人： Erich Hell ,  Manfred Fuchs

发明人： Erich Hell ,  Manfred Fuchs

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

CPC分类号： H01J43/246 ,  H01J35/06 ,  H01J35/14 ,  H01J2201/342

摘要： 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.

摘要翻译： 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：US5548630A

公开(公告)日：1996-08-20

申请号：US521365

申请日：1995-08-31

申请人： Erich Hell ,  Manfred Fuchs

发明人： Erich Hell ,  Manfred Fuchs

IPC分类号： H05G1/00 ,  A61B6/03 ,  H01J35/08 ,  H01J35/30 ,  H04N7/18

CPC分类号： A61B6/032 ,  A61B6/4028 ,  H01J35/30

摘要： According to the invention, at least one magnet element is provided for generating a guide magnetic field such that the electrons are guided at a spacing from the elongated anode. At least one kicker magnet is provided for generating a kicker magnetic field such that the electrons are steered onto the elongated anode in the region of the kicker magnetic field. The kicker magnet is implemented as a permanent magnet.

摘要翻译： 根据本发明，提供至少一个磁体元件用于产生引导磁场，使得电子以与细长阳极间隔的方式引导。 提供至少一个踢击磁体用于产生踢球磁场，使得电子在踢球磁场的区域中被转向细长的阳极。 踢球磁铁被实现为永磁体。