| 发明名称 |
Electron gun |
| 摘要 |
An electron gun comprises: (1) heater; (2) cathode including single crystal; (3) anode opposite the cathode for limiting widening of emitted electron beam; (4) device generating atoms of at least one of the elements constituting the single crystal, positioned near the cathode.
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| 申请公布号 |
DE19929096(A1) |
申请公布日期 |
2000.01.27 |
| 申请号 |
DE19991029096 |
申请日期 |
1999.06.24 |
| 申请人 |
ADVANTEST CORP., TOKIO/TOKYO |
发明人 |
TABUSE, KAZUHIKO;WATANABE, MASAO |
| 分类号 |
H01J1/14;H01J1/148;H01J1/15;H01J3/02;H01J37/06;H01J37/065;(IPC1-7):H01J1/28;H01J27/26 |
主分类号 |
H01J1/14 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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