公开(公告)号：US20190189383A1

公开(公告)日：2019-06-20

申请号：US16285475

申请日：2019-02-26

申请人： NANOX IMAGING PLC

发明人： KOICHI IIDA ,  HIDENORI KENMOTSU ,  JUN YAMAZAKI ,  HITOSHI MASUYA

IPC分类号： H01J3/14 ,  H01J35/14 ,  H01J1/304 ,  H01J3/02 ,  H01J29/46 ,  G01N23/046 ,  H01J35/06 ,  H01J31/12 ,  G01T1/161

CPC分类号： H01J35/065 ,  G01N23/046 ,  G01N2223/204 ,  G01N2223/419 ,  G01T1/161 ,  H01J1/3042 ,  H01J3/021 ,  H01J3/027 ,  H01J3/14 ,  H01J29/467 ,  H01J31/127 ,  H01J35/14 ,  H01J2235/068

摘要： Controlling total emission current of an electron emitting construct in an x-ray emitting device by providing a cathode, providing multiple active areas each active area having a gated cone electron source, including multiple emitter tips arranged in an array, a gate electrode, and a gate interconnect lead connected to the gate electrode, providing an x-ray emitting construct comprising an anode, the anode being an x-ray target, situating the x-ray emitting construct facing the active areas face each other, selecting a set of active areas, and activating selected active areas by conductively connecting a voltage source to their associated the gate electrode interconnect lead.

公开(公告)号：US20190221398A1

公开(公告)日：2019-07-18

申请号：US16362837

申请日：2019-03-25

申请人： NANOX IMAGING PLC

发明人： HIDENORI KENMOTSU ,  HITOSHI MASUYA ,  KOICHI IIDA

IPC分类号： H01J35/06 ,  H01J35/14 ,  H01J35/08 ,  H01J1/304

摘要： A robust cold cathode uses an electron emitting construct design possibly for an x-ray emitter device. The electron beam emitted by the emitting construct is focused and accelerated by an electrical field towards an electron anode target. A shield is provided to prevent a cold cathode from being damaged by ion bombardment in high-voltage applications and a non-emitter zone may provide a robust ion bombardment zone. The system is further configured to provide an angled target anode or a stepped target anode to further reduce the ion bombardment damage.