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    VARIABLE MAGNIFICATION OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR PRODUCING VARIABLE MAGNIFICATION OPTICAL SYSTEM
    1.
    发明公开
    VARIABLE MAGNIFICATION OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR PRODUCING VARIABLE MAGNIFICATION OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20240151952A1

    公开(公告)日：2024-05-09

    申请号：US18412740

    申请日：2024-01-15

    Applicant: Nikon Corporation

    Inventor： Akihiko OBAMA ,  Masashi YAMASHITA

    IPC: G02B15/14 ,  G02B15/20

    CPC classification number: G02B15/144113 ,  G02B15/20

    Abstract: A variable magnification optical system has, in order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; an aperture stop; a third lens group having positive refractive power; and a rear lens group. Upon zooming from a wide-angle end state to a telephoto end state, at least the rear lens group is moved toward the object side, and distances between the lens groups are varied. Upon focusing from an infinitely distant object to a closely distant object, the third lens group is moved along the optical axis. At least a portion of the rear lens group constitutes a vibration reduction lens group having negative refractive power and moveable perpendicular to the optical axis. An optical apparatus and a method of manufacture are also provided.

    OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR ADJUSTING OPTICAL SYSTEM
    2.
    发明申请
    OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR ADJUSTING OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20180031811A1

    公开(公告)日：2018-02-01

    申请号：US15550440

    申请日：2016-02-25

    Applicant: Nikon Corporation

    Inventor： Satoshi MIWA ,  Masashi YAMASHITA

    IPC: G02B15/167 ,  G02B7/04 ,  G02B27/64 ,  G02B13/02 ,  G02B27/00

    CPC classification number: G02B15/167 ,  G02B7/04 ,  G02B13/02 ,  G02B15/22 ,  G02B15/28 ,  G02B27/0037 ,  G02B27/646

    Abstract: An optical system includes: a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group, disposed in this order along an optical axis starting from an object side, wherein: the second lens group is movable along the optical axis to perform focusing from an infinity-distance object to a short-distance object; and the third lens group comprises: a vibration-proofing lens group configured to be movable in a direction having a component perpendicular to the optical axis to perform image surface correction on image blurring; and an adjustment lens group that is disposed closer to an image side than the vibration-proofing lens group is, the adjustment lens group including a negative lens Ln and a lens group having a positive refractive power, disposed next to the negative lens Ln, and the adjustment lens group being capable of adjusting an air gap between the negative lens Ln and the lens group having a positive refractive power.

    ZOOMING OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING ZOOMING OPTICAL SYSTEM
    3.
    发明公开
    ZOOMING OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING ZOOMING OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20230418035A1

    公开(公告)日：2023-12-28

    申请号：US18242425

    申请日：2023-09-05

    Applicant: Nikon Corporation

    Inventor： Masashi YAMASHITA

    IPC: G02B15/14 ,  G02B27/64 ,  G02B13/00 ,  G02B15/16

    CPC classification number: G02B15/144113 ,  G02B27/646 ,  G02B15/145129 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16 ,  Y10T29/4984

    Abstract: A compact zooming optical system, an optical apparatus and a method for manufacturing the zooming optical system having a vibration reduction function, a high zooming ratio, a wide-angle view and superb optical performance are provided, the system including, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group G3 having positive refractive power; and a fourth lens group G4 having negative refractive power; upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and the third lens group G3 and a distance between the third lens group G3 and the fourth lens group G4 being respectively varied; the third lens group G3 having, in order from the object side, a first segment group G31 having positive refractive power and a second segment group G32; the second segment group G32 being moved to have a component in a direction perpendicular to the optical axis; and predetermined conditional expressions being satisfied.

    VARIABLE MAGNIFICATION OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR PRODUCING VARIABLE MAGNIFICATION OPTICAL SYSTEM
    5.
    发明申请
    VARIABLE MAGNIFICATION OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR PRODUCING VARIABLE MAGNIFICATION OPTICAL SYSTEM 有权
    可变放大光学系统，光学装置和用于生产可变放大光学系统的方法

    公开(公告)号：US20150253551A1

    公开(公告)日：2015-09-10

    申请号：US14693920

    申请日：2015-04-23

    Applicant: NIKON CORPORATION

    Inventor： Akihiko OBAMA ,  Masashi YAMASHITA

    IPC: G02B15/20 ,  G02B27/64 ,  G02B27/00

    CPC classification number: G02B15/20 ,  G02B15/173 ,  G02B27/646

    Abstract: Comprising, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; an aperture stop S; a third lens group G3 having positive refractive power; and a rear lens group GR; upon zooming from a wide-angle end state to a telephoto end state, at least the rear lens group GR being moved toward the object side, and a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and the third lens group G3, and a distance between the third lens group G3 and the rear lens group GR being varied; upon focusing on from an infinitely distant object to a closely distant object, the third lens group G3 as a whole being moved in the direction of the optical axis; at least a portion of the rear lens group GR being moved as a vibration reduction lens group to have a component in a direction perpendicular to the optical axis; and the vibration reduction lens group having negative refractive power, thereby providing a variable magnification optical system capable of realizing excellent optical performance, an optical apparatus, and a method for manufacturing the variable magnification optical system.

    Abstract translation: 从物体侧起依次包括具有正折射力的第一透镜组G1; 具有负屈光力的第二透镜组G2; 孔径光阑S; 具有正屈光力的第三透镜组G3; 和后透镜组GR; 在从广角端状态变焦到望远端状态时，至少后透镜组GR朝向物体侧移动，第一透镜组G1和第二透镜组G2之间的距离，第二透镜组 透镜组G2和第三透镜组G3，并且第三透镜组G3和后透镜组GR之间的距离是变化的; 在从无限遥远的物体聚焦到远离物体的同时，第三透镜​​组G3整体沿光轴方向移动; 后透镜组GR的至少一部分作为减振透镜组移动以具有与光轴垂直的方向的分量; 和具有负折光力的减振透镜组，从而提供能够实现优异的光学性能的可变倍率光学系统，光学装置和用于制造可变倍率光学系统的方法。

    OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE OPTICAL SYSTEM
    6.
    发明公开
    OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20230258914A1

    公开(公告)日：2023-08-17

    申请号：US18009669

    申请日：2021-04-12

    Applicant: Nikon Corporation

    Inventor： Masashi YAMASHITA ,  Akino KONDO

    IPC: G02B15/14 ,  G02B15/20

    CPC classification number: G02B15/1441 ,  G02B15/20

    Abstract: This optical system (OL) has a first lens group (G1) having positive refractory power, a second lens group (G2), a third lens group (G3), and a fourth lens group (G4) which are aligned in order from an object side along an optical axis, wherein when focused from an infinity object to a short-distance object, the second lens group (G2) and the third lens group (G3) move in mutually different trajectories along the optical axis, and the second lens group (G2) and the third lens group (G3) are composed of three or less lenses in total.

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