2.
    发明专利
    未知

    公开(公告)号:DE602005013145D1

    公开(公告)日:2009-04-23

    申请号:DE602005013145

    申请日:2005-05-23

    Abstract: A lithographic apparatus is disclosed. The apparatus includes an illumination system to provide a beam of radiation, and a support structure for supporting a patterning device. The patterning device serves to impart the beam with a pattern in its cross-section. The apparatus also includes a gas flushing device (1) for flushing a substantially laminar flow of gas across the beam of radiation and/or along a surface of an optical component. The gas flushing device includes a single gas outlet (1) that has an inner rim (3) at a downstream end of the gas outlet. The inner rim (3) defines a total gas outlet area. The gas outlet is provided with a laminator (4) that has an effective area (A2) out of which, in use, the substantially laminar flow of gas flows. The laminator effective area includes material that has laminator openings (5) and is at least as large as the total gas outlet area.

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