发明名称 |
Multi-axis Magnetic Lens for Focusing a Plurality of Charged Particle Beams |
摘要 |
A cellular-type PD unit is proposed and a plurality of the cellular-type PD units is used in pairs in a multi-axis magnetic lens for focusing a plurality of charged beams. First type PD units or second type PD units (called as hybrid PD unit as well) can be applied to cellular-type PD units to flexibly construct sub-lenses. Furthermore, magnetic shielding plates with a plurality of through openings can be placed above and/or below the multi-axis magnetic lens to make magnetic flux leaking out of the multi-axis magnetic lens vanish away rapidly outside the magnetic shielding plates.
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申请公布号 |
US2013181138(A1) |
申请公布日期 |
2013.07.18 |
申请号 |
US201313741654 |
申请日期 |
2013.01.15 |
申请人 |
HERMES-MICROVISION, INC.;HERMES-MICROVISION, INC. |
发明人 |
CHEN ZHONGWEI;REN WEIMING;LIU XUEDONG |
分类号 |
H01J3/22;H01F7/02;H01J3/20;H05K9/00 |
主分类号 |
H01J3/22 |
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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