公开(公告)号：US06876724B2

公开(公告)日：2005-04-05

申请号：US10051183

申请日：2002-01-22

Applicant: Otto Z. Zhou ,  Jianping Lu ,  Qi Qiu

Inventor： Otto Z. Zhou ,  Jianping Lu ,  Qi Qiu

IPC: A61B6/03 ,  A61B6/00 ,  G21K5/02 ,  G21K5/08 ,  H01J35/06 ,  H01J35/08 ,  H01J35/16 ,  H01J35/24 ,  H05G1/00 ,  H05G1/34 ,  H01J36/06

CPC classification number: H01J35/14 ,  A61B6/032 ,  A61B6/4028 ,  B82Y10/00 ,  H01J35/065 ,  H01J35/22 ,  H01J2201/30469 ,  H01J2235/064 ,  H01J2235/068 ,  H05G1/34

Abstract: A structure to generate x-rays has a plurality of stationary and individually electrically addressable field emissive electron sources with a substrate composed of a field emissive material, such as carbon nanotubes. Electrically switching the field emissive electron sources at a predetermined frequency field emits electrons in a programmable sequence toward an incidence point on a target. The generated x-rays correspond in frequency and in position to that of the field emissive electron source. The large-area target and array or matrix of emitters can image objects from different positions and/or angles without moving the object or the structure and can produce a three dimensional image. The x-ray system is suitable for a variety of applications including industrial inspection/quality control, analytical instrumentation, security systems such as airport security inspection systems, and medical imaging, such as computed tomography.

Abstract translation: 产生X射线的结构具有多个静电和单独可电寻址的场发射电子源，其具有由诸如碳纳米管的场发射材料组成的衬底。 以预定频率电场电场切换场致发射电子源以可编程序列朝向目标上的入射点发射电子。 产生的x射线的频率和位置与场发射电子源的频率和位置相对应。 发射器的大面积目标和阵列或矩阵可以对来自不同位置和/或角度的物体进行成像，而不移动物体或结构，并可产生三维图像。 x射线系统适用于各种应用，包括工业检测/质量控制，分析仪器，机场安全检查系统等安全系统和计算机断层扫描等医学成像。

公开(公告)号：US07412033B2

公开(公告)日：2008-08-12

申请号：US11520065

申请日：2006-09-12

Applicant: Jörg Freudenberger ,  Sven Fritzler ,  Manfred Fuchs ,  Detlef Mattern ,  Peter Röhrer ,  Peter Schardt

Inventor： Jörg Freudenberger ,  Sven Fritzler ,  Manfred Fuchs ,  Detlef Mattern ,  Peter Röhrer ,  Peter Schardt

IPC: H01J36/06

CPC classification number: H01J35/065 ,  H01J35/16 ,  H01J35/26 ,  H01J35/305 ,  H01J2235/062 ,  H01J2235/066 ,  H01J2235/068 ,  H01J2235/1006 ,  H01J2235/162

Abstract: An x-ray radiator has a vacuum housing that can rotate around an axis, a cathode that thermionically emits electrons upon irradiation thereof by a laser beam, an anode that emits x-rays upon being struck by the electrons, an insulator that is part of the vacuum housing and that separates the cathode from the anode, electrodes or terminals to apply a high voltage between the anode and the cathode to accelerate the emitted electrons toward the anode to form an electron beam, a drive arrangement for rotation of the vacuum housing around its axis, an arrangement for cooling components of the x-ray radiator, and an arrangement that directs and focuses the laser beam from a stationary source that is arranged outside of the vacuum housing onto a spatially stationary laser focal spot on the cathode.

Abstract translation: X射线辐射器具有可以围绕轴线旋转的真空壳体，通过激光束照射时热离子发射电子的阴极，被电子撞击时发射x射线的阳极，作为 真空壳体并且将阴极与阳极，电极或端子分离以在阳极和阴极之间施加高电压，以将发射的电子加速到阳极以形成电子束，用于围绕真空壳体旋转的驱动装置 其轴线，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并聚焦到阴极上的空间固定的激光焦点上的布置。