OPTICAL APPARATUS FOR PLASMA
    1.
    发明申请
    OPTICAL APPARATUS FOR PLASMA 有权
    等离子体光学仪器

    公开(公告)号:US20100200767A1

    公开(公告)日:2010-08-12

    申请号:US12641805

    申请日:2009-12-18

    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。