发明名称 |
Electro-magnetic lens, charged particle beam transferring apparatus, and method for manufacturing electro-magnetic lens |
摘要 |
A charged particle beam transferring apparatus includes a pair of electro-magnetic lenses spaced apart in the direction of the optical axis. Each electro-magnetic lens consists of a coil and core made of magnetic material and having two magnetic poles. The core of at least one of the electro-magnetic lenses is made of ferrite. An insulating member supports the two magnetic poles of the core of the at least one of the electro-magnetic lenses between its two magnetic poles.
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申请公布号 |
US5629526(A) |
申请公布日期 |
1997.05.13 |
申请号 |
US19950459265 |
申请日期 |
1995.06.02 |
申请人 |
NIKON CORPORATION |
发明人 |
NAKASUJI, MAMORU |
分类号 |
H01J37/141;(IPC1-7):H01J37/141 |
主分类号 |
H01J37/141 |
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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