SYSTEM AND METHOD FOR CONDITIONING OPTICAL APPARATUSES

    公开(公告)号:US20230251583A1

    公开(公告)日:2023-08-10

    申请号:US18015155

    申请日:2021-05-31

    CPC classification number: G03F7/70633 G03F7/7085 G03F7/70716 G03F7/70558

    Abstract: The present invention relates to a stage system (130), which comprises a pre-exposure element (134), and to a method employing the pre-exposure element for conditioning an optical system (100). The pre-exposure element comprises a radiation receiving area at a surface of the stage system, wherein the radiation receiving area comprises at least one pre-exposure plate configured to receive radiation. The stage system comprises further a controller (140), wherein the controller is capable to control an optical parameter of the pre-exposure element, herewith controlling a portion of received radiation reflected by the pre-exposure element.

    COMPENSATING OPTICAL SYSTEM FOR NONUNIFORM SURFACES, A METROLOGY SYSTEM, LITHOGRAPHIC APPARATUS, AND METHODS THEREOF

    公开(公告)号:US20250028258A1

    公开(公告)日:2025-01-23

    申请号:US18684391

    申请日:2022-07-25

    Abstract: A system includes a radiation source, an optical system, an optical element, a detection system, and a processor. The radiation source is configured to generate a radiation beam. The optical system is configured to direct the radiation beam toward a target structure and to receive the scattered radiation. The target structure is configured to produce scattered radiation comprising one or more scattered beams. The optical element is configured to control a position of the one or more scattered beams. The detection system is configured to receive a portion of the position-controlled scattered radiation and to generate a detection signal. The processor is configured to determine a property of the target structure based on at least the detection signal.

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