-
1.发明专利
公开(公告)号：FR2790594A1
公开(公告)日：2000-09-08
申请号：FR0002233
申请日：2000-02-23
Applicant: NEC CORP
Inventor： MAKISHIMA HIDEO , KANAMOTO TAKASHI , TAKAHASHI MASAAKI
IPC: H01J23/06 , H01J3/02 , H01J3/20 , H01J23/065 , H01J25/34
Abstract: Electron gun (101) comprises cathode matrix with field emission (1), concentration electrode (3), anode electrode (4), magnetic field emitter (9), and support for cathode (2), holding in place cathode matrix. Emitter is made with magnets (7) and polar parts (8). Support comprises section made with ferromagnetic material.
Search Results
1
records
(took 0.02 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
