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公开(公告)号:US20070085033A1
公开(公告)日:2007-04-19
申请号:US11243363
申请日:2005-10-03
申请人: Benyamin Buller , William DeVore , Juergen Frosien , Xinrong Jiang , Richard Lozes , Henry Pearce-Percy , Dieter Winkler , Steven Coyle , Helmut Banzhof
发明人: Benyamin Buller , William DeVore , Juergen Frosien , Xinrong Jiang , Richard Lozes , Henry Pearce-Percy , Dieter Winkler , Steven Coyle , Helmut Banzhof
IPC分类号: G21G5/00
CPC分类号: H01J37/3174 , B82Y10/00 , B82Y40/00 , H01J2237/31754
摘要: An electron beam column comprises a thermal field emission electron source to generate an electron beam, an electron beam blanker, a beam shaping module, and electron beam optics comprising a plurality of electron beam lenses. In one version, the optical parameters of the electron beam blanker, beam shaping module, and electron beam optics are set to achieve an acceptance semi-angle β of from about ¼ to about 3 mrads, where the acceptance semi-angle β is the half the angle subtended by the electron beam at the writing plane. The beam-shaping module can also operate as a single lens using upper and lower projection lenses. A multifunction module for an electron beam column is also described.
摘要翻译: 电子束柱包括产生电子束的热场发射电子源,电子束消除器,光束整形模块和包括多个电子束透镜的电子束光学器件。 在一个版本中,电子束消隐器,光束整形模块和电子束光学器件的光学参数被设置为实现约¼至约3mrads的接受半角β,其中接受半角β是半 在写平面处电子束对着的角度。 光束成形模块也可以使用上下投影透镜作为单个透镜进行操作。 还描述了用于电子束柱的多功能模块。