发明名称 |
ELECTRON SOURCE AND ELECTRON BEAM APPARATUS |
摘要 |
<p>Provided is an electron source which outputs a stable electron beam even when vibration is applied from the external to an apparatus which uses the electron source. The electron source is provided with an insulator (5); two conductive terminals (4) arranged at an interval on the insulator (5); a long filament (3) stretched between the conductive terminals (4); and a needle-like cathode (1) having an electron discharging section attached to the filament (3). The vertical cross-section shape of the filament (3) in the axis direction has a long direction and a short direction, and the maximum length in the long direction is 1.5 times or more but not more than 5 times the maximum length in the short direction.</p> |
申请公布号 |
WO2009044871(A1) |
申请公布日期 |
2009.04.09 |
申请号 |
WO2008JP68077 |
申请日期 |
2008.10.03 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA;NONOGAKI, RYOZO;TERUI, YOSHINORI |
发明人 |
NONOGAKI, RYOZO;TERUI, YOSHINORI |
分类号 |
H01J37/06;H01J1/15;H01J1/16 |
主分类号 |
H01J37/06 |
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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