公开(公告)号：US06154521A

公开(公告)日：2000-11-28

申请号：US179018

申请日：1998-10-26

Applicant: Robert B. Campbell

Inventor： Robert B. Campbell

IPC: H01J35/12 ,  H01J35/28

CPC classification number: H01J35/28 ,  H01J35/12 ,  H01J2235/10 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/161

Abstract: An x-ray tube (10) includes an anode (14) connected to a mechanical drive (36). The mechanical drive oscillates the anode in a gyrating motion relative to a body of the x-ray tube. The mechanical drive is operatively connected to the anode via a bellows assembly (16) and is capable of rocking the anode in two axes simultaneously. The preferred anode is shaped in a shperical section (28) providing a fixed focal distance between the anode and a cathode (20) regardless of relative position of the anode within the body. An electron shield (40) is disposed between the cathode and the anode and has an opening along a preferred path for electron travel. Improved heat exchange is provided by applying a heat transfer agent to an obverse side of the anode which is preferably located outside of a vacuum envelope (18) defined by the x-ray tube body, the anode, and the bellows.

Abstract translation: X射线管（10）包括连接到机械驱动器（36）的阳极（14）。 机械驱动器使阳极相对于X射线管的主体以旋转运动振荡。 机械驱动器通过波纹管组件（16）可操作地连接到阳极，并且能够同时在两个轴上摆动阳极。 优选的阳极成形为在阳极和阴极（20）之间提供固定焦距的薄片部分（28），而不管阳极在体内的相对位置如何。 电子屏蔽（40）设置在阴极和阳极之间，并且具有沿电子行进的优选路径的开口。 通过将热传递剂施加到阳极的正面来提供改进的热交换，其优选位于由X射线管体，阳极和波纹管限定的真空外壳（18）的外部。