公开(公告)号：US20020186816A1

公开(公告)日：2002-12-12

申请号：US10134130

申请日：2002-04-29

Inventor： Joerg Freudenberger ,  Erich Hell ,  Detlef Mattern ,  Peter Schardt

IPC: H01J035/10

CPC classification number: H01J35/305 ,  H01J2235/162

Abstract: An x-ray tube has a vacuum housing containing an electron-emitting cathode and an anode on which the electron beam, accelerated with an electrical field, is incident. The x-ray tube contains a magnet system which generates a main magnetic field with spring focus for deflecting and focusing the electron beam such that the focal spot on the incident surface of the anode can be azimuthally varied. A coil is located spatially separate from the main magnetic field and the alignment of the focal spot relative to the incident surface can be influenced therewith. The coil is fashioned and arranged such that a non-uniform magnetic field that effects a parallel alignment of the focal spot in the spring function is generated therewith.

Abstract translation: X射线管具有包含电子发射阴极和阳极的真空壳体，电子束在其上被电场加速。 X射线管包含磁体系统，其产生具有弹簧聚焦的主磁场，用于偏转和聚焦电子束，使得阳极入射表面上的焦斑可以方位角变化。 线圈位于空间上与主磁场分离，并且焦点相对于入射表面的对准可能受到影响。 线圈被形成并布置成使得在弹簧功能中实现焦斑的平行对准的不均匀磁场。

公开(公告)号：US5241577A

公开(公告)日：1993-08-31

申请号：US817294

申请日：1992-01-06

Applicant: James E. Burke ,  Salvatore G. Perno

Inventor： James E. Burke ,  Salvatore G. Perno

IPC: H01J35/10 ,  H01J35/16 ,  H01J35/24 ,  H05G1/08 ,  H05G1/66

CPC classification number: H01J35/24 ,  H01J35/165 ,  H05G1/08 ,  H05G1/66 ,  H01J2235/162

Abstract: An anode (A) closes one end of an evacuated envelope (C) and a cathode end plate (22) closes the other. A cathode assembly (B) is mounted on a bearing (40) in the evacuated envelope such that the envelope and cathode can undergo relative rotation. A motor (38) rotates the anode and envelope while a pair of magnets (44, 46) hold the cathode assembly stationary. Bearing (40) functions as a current path from a current source (72) to the primary windings of a transformer (58). Another bearing (94) provides a return current path from the transformer to the current source. The secondary windings of the transformer are connected with a cathode filament (52). The transformer enables a relatively low ampere current to pass through the bearings to limit cathodic damage to the bearings, yet provides sufficient amperage to the filament to cause thermionic emission. The bearings provide a direct transfer of current which does not degrade the vacuum in the envelope in such a manner that the current through the cathode filament can be measured directly from outside the envelope.

公开(公告)号：US20180075997A1

公开(公告)日：2018-03-15

申请号：US15472549

申请日：2017-03-29

Applicant: Nanox Imaging PLC

Inventor： Hidenori KENMOTSU ,  Hitoshi MASUYA

IPC: H01J35/06 ,  H01J35/08 ,  H01J35/14 ,  H01J35/16

CPC classification number: H01J35/06 ,  H01J35/08 ,  H01J35/14 ,  H01J35/16 ,  H01J2235/066 ,  H01J2235/068 ,  H01J2235/162

Abstract: An X-ray tube comprises a vacuum vessel; a cathode and an anode fixedly disposed inside the vacuum vessel; and a rotary mechanism that rotates the vacuum vessel. The cathode is disposed on the circumference with the rotary shaft of the rotary mechanism as its center and includes a plurality of cathode parts that can individually be turned ON/OFF. The anode includes parts opposite to the plurality of cathode parts, respectively.

公开(公告)号：US20160007949A1

公开(公告)日：2016-01-14

申请号：US14794161

申请日：2015-07-08

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Medical Systems Corporation

Inventor： Yoshimasa KOBAYASHI ,  Shumpei OHASHI

IPC: A61B6/00 ,  H01J35/02 ,  H01J35/16

CPC classification number: A61B6/54 ,  A61B6/40 ,  A61B6/4441 ,  A61B6/4452 ,  A61B6/4482 ,  A61B6/4488 ,  A61B6/487 ,  A61B6/504 ,  A61B6/5205 ,  A61B6/582 ,  H01J35/025 ,  H01J35/16 ,  H01J2235/1216 ,  H01J2235/162

Abstract: An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube holding device, an X-ray detector, a rotator, an arm, and a tubular body. The X-ray tube holding device generates X-rays. The X-ray detector detects the X-rays. The rotator holds the X-ray tube holding device so as to be rotatable about a first rotation axis obtained by setting an irradiation direction of the X-rays as an axis. The arm holds the rotator and the X-ray detector and is rotatable about a second rotation axis different from the first rotation axis. The tubular body connects the X-ray tube holding device and a device away from the arm. The arm holds the rotator so as to be rotatable about the first rotation axis in a direction in which torsion of the tubular body is reduced.

Abstract translation: 根据实施例的X射线诊断装置包括X射线管保持装置，X射线检测器，旋转器，臂和管状体。 X射线管保持装置产生X射线。 X射线检测器检测X射线。 旋转体保持X射线管保持装置，以能够围绕通过将X射线的照射方向设定为轴而获得的第一旋转轴旋转。 臂保持旋转器和X射线检测器，并且可绕第一旋转轴线旋转的第二旋转轴线旋转。 管状体将X射线管保持装置和远离手臂的装置连接。 臂保持旋转体，以便能够沿着管状体的扭转减小的方向围绕第一旋转轴线旋转。

公开(公告)号：US5581591A

公开(公告)日：1996-12-03

申请号：US345921

申请日：1994-11-28

Applicant: James E. Burke ,  Lester Miller ,  Salvatore Perno ,  Norman E. Wandke

Inventor： James E. Burke ,  Lester Miller ,  Salvatore Perno ,  Norman E. Wandke

IPC: H05G1/02 ,  H01J35/02 ,  H01J35/06 ,  H01J35/10 ,  H01J35/14 ,  H01J35/16 ,  H01J35/24 ,  H01J35/26 ,  H05G1/04 ,  H05G1/06 ,  H05G1/08 ,  H05G1/20 ,  H05G1/34 ,  H05G1/52 ,  H05G1/66 ,  H01J35/04

CPC classification number: H01J35/02 ,  H01J35/06 ,  H01J35/10 ,  H01J35/14 ,  H01J35/165 ,  H01J35/24 ,  H01J35/26 ,  H05G1/04 ,  H05G1/06 ,  H05G1/08 ,  H05G1/20 ,  H05G1/34 ,  H05G1/52 ,  H05G1/66 ,  H01J2235/10 ,  H01J2235/162 ,  H05G1/025

Abstract: An x-ray tube includes an anode (A) and an envelope (C). A cathode assembly (B) which is supported in the envelope on a bearing (32) emits a beam of electrons which strike the anode forming a focal spot. The anode rotates (D) relative to the cathode such that focal spot follows a generally annular path along a beveled track (14). If the axis of the anode and the cathode assembly are screwed or offset, the focal spot path is not circular and wobbles. An adjustment assembly (60) adjusts the relative positions of the anode, the cathode and the envelope to adjust the anode and cathode assembly axes. The adjustment assembly also includes one or more electrodes (102, 108) which adjust the position of the focal spot. An angular position encoder (106) identifies an angular orientation of the anode. A control circuit (110) applies an electrostatic potential to the electrodes to move the focal spot such that it stays on a constant plane of the leveled anode surface.

Abstract translation: X射线管包括阳极（A）和外壳（C）。 支撑在轴承（32）上的外壳中的阴极组件（B）发射撞击阳极的电子束，形成焦点。 阳极相对于阴极旋转（D），使得焦斑沿着斜面轨道（14）沿着大致环形路径。 如果阳极和阴极组件的轴线被拧紧或偏移，则焦点路径不是圆形并且摆动。 调节组件（60）调节阳极，阴极和外壳的相对位置以调节阳极和阴极组件的轴线。 调整组件还包括一个或多个调整焦点位置的电极（102,108）。 角位置编码器（106）识别阳极的角度取向。 控制电路（110）向电极施加静电电位以使焦点移动，使其保持在平整的阳极表面的恒定平面上。

公开(公告)号：US5384820A

公开(公告)日：1995-01-24

申请号：US93055

申请日：1993-07-16

Applicant: James E. Burke

Inventor： James E. Burke

IPC: H01J35/02 ,  H01J35/06 ,  H01J35/10 ,  H01J35/14 ,  H01J35/16 ,  H01J35/24 ,  H01J35/26 ,  H05G1/04 ,  H05G1/06 ,  H05G1/08 ,  H05G1/20 ,  H05G1/34 ,  H05G1/52 ,  H05G1/66 ,  H01J35/04

CPC classification number: H01J35/02 ,  H01J35/06 ,  H01J35/10 ,  H01J35/14 ,  H01J35/165 ,  H01J35/24 ,  H01J35/26 ,  H05G1/025 ,  H05G1/04 ,  H05G1/06 ,  H05G1/08 ,  H05G1/20 ,  H05G1/34 ,  H05G1/52 ,  H05G1/66 ,  H01J2235/162

Abstract: A housing (A) which has a radiation transmissive window (52) defines a coolant oil reservoir (50). An x-ray tube (B) is mounted within the cooling oil reservoir. The x-ray tube includes a vacuum envelope having a cylindrical wall portion (10). A cylindrical sleeve (70) is mounted around the cylindrical wall (10) defining a narrow coolant oil gap (100). In one embodiment, a motor (16) rotates the vacuum envelope and an anode (14). The cylindrical sleeve (70) and the cylindrical rotating vacuum envelope wall portion (10) with the cooling oil film in the gap define a journal bearing which minimizes the horsepower requirements of the motor (16). A diaphragm (102) is expanded to reduce the thickness of the coolant oil film in the journal bearing gap. The cylindrical sleeve (70) is preferably constructed of a radiation blocking material such that the body of coolant oil (50) is shielded from x-rays (42). A window (76) is defined in alignment with the housing window (52) such that a beam of x-rays is permitted to leave the assembly. A radiation blocking disk (84) is mounted between the cathode and one end of the tube to block radiation exiting in that direction. The anode blocks radiation from exiting in the other direction. Optionally, an additional cylinder of radiation blocking material (86) may be mounted between the cathode and the cylindrical sleeve (70).

Abstract translation: 具有辐射透射窗口（52）的壳体（A）限定冷却油储存器（50）。 X射线管（B）安装在冷却油箱内。 X射线管包括具有圆柱形壁部分（10）的真空外壳。 圆柱形套筒（70）围绕限定狭窄的冷却剂油间隙（100）的圆柱形壁（10）安装。 在一个实施例中，马达（16）使真空外壳和阳极（14）旋转。 圆柱形套筒（70）和带有间隙中的冷却油膜的圆柱形旋转真空封套壁部分（10）限定了使马达（16）的马力需求最小化的轴颈轴承。 隔膜（102）被膨胀以减小轴颈轴承间隙中的冷却剂油膜的厚度。 圆柱形套筒（70）优选地由辐射阻挡材料构成，使得冷却剂油体（50）的主体被屏蔽不受x射线（42）的影响。 窗口（76）被限定为与壳体窗口（52）对准，使得允许一束x射线离开组件。 辐射阻挡盘（84）安装在阴极和管的一端之间以阻挡沿该方向射出的辐射。 阳极阻挡辐射在另一个方向上射出。 可选地，可以在阴极和圆柱形套筒（70）之间安装附加的辐射阻挡材料筒（86）。

公开(公告)号：US4878235A

公开(公告)日：1989-10-31

申请号：US160223

申请日：1988-02-25

Applicant: Weston A. Anderson

Inventor： Weston A. Anderson

IPC: G21K1/00 ,  H01J35/10 ,  H01J35/16 ,  H01J35/26 ,  H05G1/00 ,  H05G1/04 ,  H05G1/52

CPC classification number: H05G1/04 ,  H01J35/10 ,  H01J35/16 ,  H01J35/26 ,  H05G1/025 ,  H01J2235/162

Abstract: Several different embodiments of high-intensity rotating-anode X-ray are shown which use a liquid or fluid-cooled rotating-anode. No ferrofluid-type rotating joints or O-ring gasket-type seals are required so that the interior of the tube maintains a high vacuum without pumping. A bellows permits mechanical coupling to interior structures of the tube while providing a completely vacuum tight enclosure. All joints may be hard soldered or brazed together so the entire system can be baked at a high temperature during pumpdown.

公开(公告)号：US20100195799A1

公开(公告)日：2010-08-05

申请号：US12671021

申请日：2007-08-09

Applicant: Sadamu Tomita ,  Shigeki Hayashi

Inventor： Sadamu Tomita ,  Shigeki Hayashi

IPC: H01J35/14 ,  H01J35/10

CPC classification number: H01J35/14 ,  H01J35/16 ,  H01J35/305 ,  H01J2235/1212 ,  H01J2235/1216 ,  H01J2235/162

Abstract: Conventionally, the magnetic field generator was arranged perpendicularly to the axis of the electron beam. The magnetic field generator of this invention is arranged so as to be inclined relative to the plane perpendicular to the axis of the electron beam. Specifically, the magnetic field generator is arranged so as to be inclined relative to the plane perpendicular to the axis of the electron beam within the range in the cathode side from the focused and deflected electron beam. Inclination up to the anode side opposite to the cathode side will lead to a possibility of increasing the reduced X-ray source diameter. Thus, arranging the magnetic field generator so as to be inclined within the range in the cathode side from the electron beam may reduce the X-ray source diameter.

Abstract translation: 通常，磁场发生器垂直于电子束的轴线布置。 本发明的磁场发生器被布置成相对于垂直于电子束轴的平面倾斜。 具体地说，磁场发生器被布置为相对于垂直于电子束轴线的平面在从聚焦偏转电子束的阴极侧范围内倾斜。 直到与阴极侧相反的阳极侧的倾斜将导致增加X射线源直径减小的可能性。 因此，将磁场发生器设置成在电子束的阴极侧的范围内倾斜，可能降低X射线源直径。

公开(公告)号：US07496179B2

公开(公告)日：2009-02-24

申请号：US11752423

申请日：2007-05-23

Applicant: Joerg Freudenberger ,  Sven Fritzler ,  Manfred Fuchs ,  Matthias Maier ,  Detlef Mattern ,  Peter Roehrer ,  Peter Schardt

Inventor： Joerg Freudenberger ,  Sven Fritzler ,  Manfred Fuchs ,  Matthias Maier ,  Detlef Mattern ,  Peter Roehrer ,  Peter Schardt

IPC: H01J35/06 ,  H05G1/36 ,  H05G1/46

CPC classification number: H01J35/065 ,  H01J35/305 ,  H01J2235/162

Abstract: An x-ray unit has an x-ray radiator having an anode that emits x-rays upon being struck by electrons, a cathode that thermionically emits electrons upon irradiation thereof by a laser beam, electrical connections for application of a high voltage between the anode and the cathode to accelerate the emitted electrons toward the anode as an electron beam, a vacuum housing that can be rotated around an axis, an insulator that is part of the vacuum housing and that separates the cathode from the anode, a drive that rotates the vacuum housing around its axis, an arrangement for cooling components of the x-ray radiator, and an arrangement that directs the laser beam from a stationary source, arranged outside of the vacuum housing, onto a spatially stationary laser focal spot on the cathode and that focuses the laser beam. The x-ray unit furthermore has a control circuit with which an operating property of the x-ray unit is adjusted and at least one measurement element for measurement of a measurement quantity is effectively correlated with the temperature of the cathode. The control circuit adjusts the operating property dependent on the measurement of the measurement quantity.

Abstract translation: x射线单元具有：x射线辐射体，其具有在被电子撞击时发射x射线的阳极;通过激光束照射电子时发射电子的阴极;用于在阳极之间施加高电压的电连接 以及用于将发射的电子作为电子束加速到阳极的阴极，可以围绕轴线旋转的真空壳体，作为真空壳体的一部分并将阴极与阳极分离的绝缘体，使得阴极与阳极分离的驱动器， 围绕其轴线的真空壳体，用于冷却x射线辐射器的部件的布置，以及将来自设置在真空壳体外部的固定源的激光束引导到阴极上的空间静止的激光焦点上的布置， 聚焦激光束。 X射线单元还具有调整X射线单元的工作特性的控制电路，并且用于测量量的至少一个测量元件与阴极的温度有效地相关。 控制电路根据测量量的测量来调整工作特性。

公开(公告)号：US6084942A

公开(公告)日：2000-07-04

申请号：US157637

申请日：1998-09-21

Applicant: Erich Hell ,  Thomas Ohrndorf ,  Peter Schardt

Inventor： Erich Hell ,  Thomas Ohrndorf ,  Peter Schardt

IPC: H01J35/10 ,  H01J35/26 ,  H01J35/30

CPC classification number: H01J35/305 ,  H01J35/105 ,  H05G1/025 ,  H01J2235/1262 ,  H01J2235/162

Abstract: An x-ray radiator has a rotating bulb tube whose vacuum housing rotates within the radiator housing filled with a fluid coolant, as well as with an external heat exchanger for the cooling of the coolant, with the coolant admission connector and the coolant discharge connector for the coolant conducted through the external heat exchanger without a circulating pump arranged at respective positions of the radiator housing at which a lower pressure and a higher pressure are generated by the rotation of the rotating bulb.

Abstract translation: X射线辐射器具有旋转灯泡管，其真空壳体在散热器壳体内旋转，填充有流体冷却剂，以及用于冷却冷却剂的外部热交换器，冷却剂入口连接器和冷却剂排出连接器用于 冷却剂通过外部热交换器而没有循环泵布置在散热器壳体的相应位置处，在该位置处通过旋转灯泡的旋转产生较低的压力和较高的压力。