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公开(公告)号:US20100200767A1
公开(公告)日:2010-08-12
申请号:US12641805
申请日:2009-12-18
申请人: HunJung YI , Jae-Won HAHN , Seungki CHAE , Chang-Hoon OH
发明人: HunJung YI , Jae-Won HAHN , Seungki CHAE , Chang-Hoon OH
CPC分类号: G02B21/0028 , G01J3/02 , G01J3/0208 , G01J3/0229 , G01J3/0262 , G01J3/0289 , G01J3/443
摘要: An optical apparatus for plasma includes a light collection lens provided to receive optical emission spectrum from plasma, a first aperture stop disposed between the light collection lens and the plasma to block out-focused light, a second aperture stop disposed between the light collection lens and an imaging area of the light collection lens to block in-focused light, and a pinhole disposed at the imaging area of the light collection lens to limit depth of focus.
摘要翻译: 一种用于等离子体的光学装置,包括:用于接收来自等离子体的光发射光谱的光收集透镜;设置在光采集透镜和等离子体之间的第一孔径光阑,以阻挡向外聚焦的光;第二孔径光阑设置在光收集透镜和 聚光透镜的成像区域以遮挡聚焦光,以及设置在聚光透镜的成像区域的针孔,以限制聚焦深度。