Imaging lens and imaging apparatus

    公开(公告)号:US12130497B2

    公开(公告)日:2024-10-29

    申请号:US17192684

    申请日:2021-03-04

    发明人: Masato Kondo

    IPC分类号: G02B9/12

    CPC分类号: G02B9/12

    摘要: The imaging lens consists of, in order from the object side to the image side, a first lens group having a positive refractive power, a second lens group having a positive refractive power, and a third lens group. During focusing, only the second lens group moves. The second lens group includes at least four lenses. The imaging lens satisfies predetermined conditional expressions.

    Plasma processing method and plasma processing apparatus

    公开(公告)号:US12125672B2

    公开(公告)日:2024-10-22

    申请号:US18350207

    申请日:2023-07-11

    发明人: Chishio Koshimizu

    摘要: A plasma processing method according to an exemplary embodiment includes preparing a substrate in a chamber of a plasma processing apparatus. The substrate is disposed on a substrate support in the chamber. The substrate support includes a lower electrode and an electrostatic chuck. The electrostatic chuck is provided on the lower electrode. The plasma processing method further includes applying a positive voltage to a conductive member when plasma is being generated in the chamber for plasma processing on the substrate. The conductive member extends closer to a grounded side wall of the chamber than the substrate.

    Eyepiece lens, observation optical system, and optical apparatus

    公开(公告)号:US12124023B2

    公开(公告)日:2024-10-22

    申请号:US17116205

    申请日:2020-12-09

    发明人: Hiroki Saito

    IPC分类号: G02B25/00 G02B9/34

    CPC分类号: G02B25/001 G02B9/34

    摘要: The eyepiece lens consists of, in order from an observation object side to an eye point side, a positive first lens, a negative second lens, a positive third lens, and a positive fourth lens. All lenses are single lenses. The second lens has a biconcave shape. An observation object-side surface of the fourth lens has a convex shape. In a case where a refractive index of the third lens with respect to d line is N3, the eyepiece lens satisfies the following conditional expression.

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    Imaging lens and imaging apparatus

    公开(公告)号:US12124014B2

    公开(公告)日:2024-10-22

    申请号:US18635352

    申请日:2024-04-15

    发明人: Taiga Noda

    摘要: The imaging lens consists of, in order from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a negative refractive power, and is configured such that, during focusing, the first lens group and the third lens group remain stationary with respect to an image plane, the second lens group moves in the direction of an optical axis, the first lens group includes a first-a negative lens and a first-b negative lens successively in order from a position closest to the object side, and that the second lens group includes an aperture stop that moves integrally with the second lens group during focusing.