公开(公告)号：EP3699947A3

公开(公告)日：2020-11-25

申请号：EP20158468.7

申请日：2020-02-20

申请人： Varex Imaging Corporation

发明人： HANSEN, Wayne ,  ROBINSON, Vance ,  GREENLAND, Kasey ,  WANG, Gangqiang

IPC分类号： H01J35/06

摘要： An emitter for a closed x-ray tube includes an emitter body 152 formed of a low work function emitter material, the emitter body having a major surface 158 and a secondary surface 159B. The major surface is adapted for emission of electrons from the low work function material. The emitter assembly is adapted to reduce an emission current density emitted from the secondary surface of the emitter body, as compared to the major surface.

公开(公告)号：EP3699947A2

公开(公告)日：2020-08-26

申请号：EP20158468.7

申请日：2020-02-20

申请人： Varex Imaging Corporation

发明人： HANSEN, Wayne ,  ROBINSON, Vance ,  GREENLAND, Kasey ,  WANG, Gangqiang

IPC分类号： H01J35/06

摘要： An emitter for a closed x-ray tube includes an emitter body 152 formed of a low work function emitter material, the emitter body having a major surface 158 and a secondary surface 159B. The major surface is adapted for emission of electrons from the low work function material. The emitter assembly is adapted to reduce an emission current density emitted from the secondary surface of the emitter body, as compared to the major surface.