公开(公告)号：US20090304157A1

公开(公告)日：2009-12-10

申请号：US12478052

申请日：2009-06-04

申请人： Jens Fuerst ,  Stefan Popescu ,  Georg Wittmann

发明人： Jens Fuerst ,  Stefan Popescu ,  Georg Wittmann

IPC分类号： H01J35/00 ,  H01J1/00

CPC分类号： H01J3/021 ,  H01J35/065 ,  H01J35/26 ,  H01J35/305

摘要： A field emission cathode has a field emitter and an extraction grid, and the field emitter and the extraction grid can be moved relative to one another. Such a field emission cathode is highly durable and exhibits a longer lifespan. An x-ray tube has a field emission cathode composed of a field emitter and an extraction grid that can be moved relative to one another. Such an x-ray tube is highly durable and exhibits a longer lifespan.

摘要翻译： 场发射阴极具有场发射器和提取栅格，并且场发射器和提取栅格可以相对于彼此移动。 这种场致发射阴极具有高耐久性，寿命更长。 X射线管具有由场发射器和可相对于彼此移动的提取栅格组成的场致发射阴极。 这种X射线管是高度耐用的并且具有更长的寿命。

公开(公告)号：US07778391B2

公开(公告)日：2010-08-17

申请号：US12478052

申请日：2009-06-04

申请人： Jens Fuerst ,  Stefan Popescu ,  Georg Wittmann

发明人： Jens Fuerst ,  Stefan Popescu ,  Georg Wittmann

IPC分类号： H01J35/00

CPC分类号： H01J3/021 ,  H01J35/065 ,  H01J35/26 ,  H01J35/305

摘要： A field emission cathode has a field emitter and an extraction grid, and the field emitter and the extraction grid can be moved relative to one another. Such a field emission cathode is highly durable and exhibits a longer lifespan. An x-ray tube has a field emission cathode composed of a field emitter and an extraction grid that can be moved relative to one another. Such an x-ray tube is highly durable and exhibits a longer lifespan.

摘要翻译： 场发射阴极具有场发射器和提取栅格，并且场发射器和提取栅格可以相对于彼此移动。 这种场致发射阴极具有高耐久性，寿命更长。 X射线管具有由场发射器和可相对于彼此移动的提取栅格组成的场致发射阴极。 这种X射线管是高度耐用的并且具有更长的寿命。

公开(公告)号：US20110075802A1

公开(公告)日：2011-03-31

申请号：US12568703

申请日：2009-09-29

申请人： Moritz Beckmann ,  Jens Fuerst ,  Peter Schardt ,  Frank Sprenger ,  Otto Zhou

发明人： Moritz Beckmann ,  Jens Fuerst ,  Peter Schardt ,  Frank Sprenger ,  Otto Zhou

IPC分类号： G01N23/083 ,  H01J35/30 ,  H01J35/06

CPC分类号： H01J35/065 ,  H01J35/08 ,  H01J35/14 ,  H01J35/30 ,  H01J2235/062 ,  H01J2235/068 ,  H01J2235/086

摘要： An x-ray imaging system has an x-ray source having an electron field emission source that emits an x-ray beam that strikes an elongated, stationary anode in an evacuated housing. A magnetic deflection system steers the electron beam between the electron field emission source and the anode, so that the electron beam can strike the anode at different locations, thereby causing x-rays to be emitted from those different locations, by controlling the degree of magnetic deflection. A radiation detector detects the x-rays after attenuation by an examination subject, and generates signals dependent on the detected radiation that represent an image of the subject.

摘要翻译： x射线成像系统具有x射线源，该X射线源具有电子场发射源，该电子场发射源发射在抽真空壳体中撞击细长固定阳极的x射线束。 磁偏转系统将电子束引导到电子场发射源和阳极之间，使得电子束可以在不同的位置撞击阳极，从而通过控制磁场的程度使得从这些不同位置发射X射线 偏转。 放射线检测器通过检查对象检测衰减后的X射线，并且产生取决于检测到的辐射的信号，该信号表示被检体的图像。