Illumination module and associated methods and metrology apparatus

    公开(公告)号:IL316658A

    公开(公告)日:2024-12-01

    申请号:IL31665824

    申请日:2024-10-29

    Abstract: Disclosed is an illumination module for a metrology device. The illumination module comprises a configurable illumination module operable to provide measurement illumination over a configurable range of illumination angles, a grating light valve module for controllably configuring a spectral configuration of the measurement illumination; and a controller operable to control the configurable illumination module and the grating light valve module such that the spectral configuration of the measurement illumination is varied in dependence with illumination angle within the range of illumination angles so as to obtain a desired detection condition for detection of diffracted radiation from a diffractive structure resultant from a measurement of the diffractive structure using the measurement illumination.

    MARK STRUCTURE FOR COARSE WAFER ALIGNMENT AND METHOD FOR MANUFACTURING SUCH A MARK STRUCTURE

    公开(公告)号:SG155136A1

    公开(公告)日:2009-09-30

    申请号:SG2009011396

    申请日:2009-02-17

    Inventor: WARNAAR PATRICK

    Abstract: A mark structure includes on a substrate, at least four lines. The lines extend parallel to each other in a first direction and are arranged with a pitch between each pair of lines that is directed in a second direction perpendicular to the first direction. The pitch between each pair of selected lines differs from the pitch between each other pair of selected lines.

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