ABERRATION CORRECTION IN CHARGED PARTICLE SYSTEM

    公开(公告)号:US20220285124A1

    公开(公告)日:2022-09-08

    申请号:US17824831

    申请日:2022-05-25

    Abstract: A lens element of a charged particle system comprises an electrode having a central opening. The lens element is configured for functionally cooperating with an aperture array that is located directly adjacent said electrode, wherein the aperture array is configured for blocking 5 part of a charged particle beam passing through the central opening of said electrode. The electrode is configured to operate at a first electric potential and the aperture array is configured to operate at a second electric potential different from the first electric potential. The electrode and the aperture array together form an aberration correcting lens.

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