公开(公告)号：US09659739B2

公开(公告)日：2017-05-23

申请号：US14399658

申请日：2013-05-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Helmut Bathe ,  Thorben Repenning

IPC: H05G1/34 ,  H01J35/14 ,  H01J35/30 ,  H05G1/46 ,  A61B6/00 ,  G01N23/225 ,  H01J35/24

CPC classification number: H01J35/14 ,  A61B6/4021 ,  A61B6/405 ,  A61B6/4441 ,  A61B6/54 ,  G01N23/2252 ,  H01J35/24 ,  H01J35/30 ,  H01J35/305 ,  H05G1/34 ,  H05G1/46

Abstract: An apparatus (210) and method for total or partial blanking of an electron beam (e) during a jump between the 2 or more positions of a dynamic focal spot (FP) movement in circumferential direction of the electron beam impinging on the focal track (FPTR) of a rotating target disk (230) of a X-ray tube (110). Alternatively the focal spot size can be increased during this short time interval. Overheating of the anode at the focal spot can be prevented.

公开(公告)号：US09934931B2

公开(公告)日：2018-04-03

申请号：US14903805

申请日：2014-06-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Helmut Bathe ,  Ulrich Hermann Hove

IPC: H01J35/00 ,  H01J35/10 ,  H01J9/14

CPC classification number: H01J35/101 ,  H01J9/148 ,  H01J2235/1006 ,  H01J2235/1013 ,  H01J2235/1046

Abstract: The present invention relates to mounting of an anode disk. In order to provide a mount of an anode disk to a rotating shaft that is suitable for increased thermal loads on the anode disk, a rotating anode assembly (10) is provided that comprises an anode disk (12), a rotating shaft (14), and an anode disk support (16). The anode disk is concentrically mounted to a rotating axis (18) of the rotating shaft via the anode disk support, and the anode disk support comprises a first support (20) with a first circular axial support surface (22) that is provided at the rotating shaft in a concentric manner with the rotating axis. Further, the anode disk support comprises a second support (24) with a second axial support surface (26) that is at least temporarily attached to the rotating shaft for urging the anode disk against the first support surface in an axial clamping direction. Still further, the first support is provided as a radially flexible support (28). Upon heating up of the anode disk during X-ray generation, and a thermal expansion of the anode disk, the radially flexible support bends (32) radially such that the first axial support surface at least partly follows the thermal expansion in a radial direction.

公开(公告)号：US20150098548A1

公开(公告)日：2015-04-09

申请号：US14399658

申请日：2013-05-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Helmut Bathe ,  Thorben Repenning

IPC: H01J35/14 ,  H01J35/30 ,  G01N23/225 ,  H01J35/24

CPC classification number: H01J35/14 ,  A61B6/4021 ,  A61B6/405 ,  A61B6/4441 ,  A61B6/54 ,  G01N23/2252 ,  H01J35/24 ,  H01J35/30 ,  H01J35/305 ,  H05G1/34 ,  H05G1/46

Abstract: An apparatus (210) and method for total or partial blanking of an electron beam (e) during a jump between the 2 or more positions of a dynamic focal spot (FP) movement in circumferential direction of the electron beam impinging on the focal track (FPTR) of a rotating target disk (230) of a X-ray tube (110). Alternatively the focal spot size can be increased during this short time interval. Overheating of the anode at the focal spot can be prevented.

Abstract translation: 一种用于在电子束的周向上的动态焦点（FP）运动的2个或更多个位置之间的跳跃期间的电子束（e）的全部或部分消隐的装置（210）和方法，该电子束撞击在焦点轨迹上 FPTR）的X射线管（110）的旋转目标盘（230）。 或者，可以在该短时间间隔期间增加焦斑尺寸。 可以防止焦点处的阳极过热。

公开(公告)号：US11469071B2

公开(公告)日：2022-10-11

申请号：US16770979

申请日：2018-12-11

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Rolf Karl Otto Behling ,  Christoph Helmut Bathe ,  Wolfgang Chrost

IPC: H01J35/10

Abstract: The rotatable anode of a rotating anode X-ray source has demanding requirements placed upon it. For example, it may rotate at a frequency as high as 200 Hz. X-ray emission is stimulated by applying a large voltage to the cathode, causing electrons to collide with the focal track. The focal spot generated at the electron impact position may have a peak temperature between 2000° C. and 3000° C. The constant rotation of the rotating anode protects the focal track to some extent, however the average temperature of the focal track immediately following a CT acquisition protocol may still be around 1500° C. Therefore, demanding requirements are placed upon the design of the rotating anode. The present application proposes a multi-layer coating for the target region of a rotating X-ray anode which improves mechanical resilience and thermal resilience, whilst reducing the amount of expensive refractory metals required.