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    PHOTOGRAPHING LENS, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE PHOTOGRAPHING LENS
    14.
    发明申请
    PHOTOGRAPHING LENS, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE PHOTOGRAPHING LENS 有权
    摄影镜头，光学设备及制作摄影镜头的方法

    公开(公告)号：US20150085387A1

    公开(公告)日：2015-03-26

    申请号：US14556113

    申请日：2014-11-29

    Applicant: NIKON CORPORATION

    Inventor： Satoshi MIWA

    IPC: G02B9/14 ,  G03B19/12

    CPC classification number: G02B9/14 ,  G02B15/173 ,  G02B27/646 ,  G03B5/00 ,  G03B19/12

    Abstract: Provided is a photographing lens (ML) including a first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, and a third lens group (G3) having positive refractive power, the photographing lens being configured such that the second lens group (G2) moves along the optical axis upon focusing from an object at infinity to an object at a finite distance. The first lens group (G1) includes a front lens group (G1a) and a rear lens group (G1b) having a longest air interval from the front lens group (G1a) in the first lens group (G1), and the second lens group (G2) includes a negative lens (L21) and a cemented lens in which a positive lens (22) and a negative lens (23) are cemented in order from the object.

    Abstract translation: 本发明提供一种包括具有正折光力的第一透镜组（G1），具有负屈光力的第二透镜组（G2）和具有正屈光力的第三透镜组（G3）的拍摄透镜（ML），拍摄透镜 被构造成使得当从无限远的物体聚焦到有限距离的物体时，第二透镜组（G2）沿着光轴移动。 第一透镜组（G1）包括从第一透镜组（G1）中的前透镜组（G1a）开始具有最长空气间隔的前透镜组（G1a）和后透镜组（G1b），第二透镜组 （G2）包括负透镜（L21）和胶合透镜，其中正透镜（22）和负透镜（23）按照从物体的顺序粘合。

    OPTICAL SYSTEM, OPTICAL APPARATUS, AND METHOD FOR MANUFACTURING OPTICAL SYSTEM
    15.
    发明申请
    OPTICAL SYSTEM, OPTICAL APPARATUS, AND METHOD FOR MANUFACTURING OPTICAL SYSTEM 有权

    公开(公告)号：US20250164763A1

    公开(公告)日：2025-05-22

    申请号：US19101699

    申请日：2023-07-28

    Applicant: NIKON CORPORATION

    Inventor： Satoshi MIWA

    IPC: G02B15/14

    Abstract: An optical system that can obtain favorable optical performance while achieving size and weight reduction, an optical apparatus, and a method for manufacturing the optical system are provided. An optical system OL included in an optical apparatus such as a camera 1 includes, sequentially 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, a fourth lens group G4 having negative refractive power, and a fifth lens group G5 having positive refractive power, a space between adjacent lens groups changes at zooming, the second lens group G2 is fixed relative to an image plane at zooming, and the optical system OL satisfies a condition expressed by a predetermined conditional expression.

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