LITHOGRAPHIC APPARATUS AND DEVICE MANUFACTURING METHOD

    公开(公告)号:US20190354021A1

    公开(公告)日:2019-11-21

    申请号:US16483660

    申请日:2018-01-11

    Abstract: A lithographic apparatus is described, the apparatus comprising: a projection system configured to project a patterned beam of radiation onto a substrate; the projection system comprising a plurality of optical elements; a sensor frame; a first position measurement system configured to measure a position of the plurality of optical elements relative to the sensor frame; wherein the sensor frame comprises: N sub-frames, N being an integer >1, a coupling system coupling the N sub-frames and a second position measurement system configured to determine a relative position of the N sub-frames.

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