知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

11 条记录 (耗时 0.017 秒)

    Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method
    1.
    发明授权
    Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method 有权

    公开(公告)号：US10317654B2

    公开(公告)日：2019-06-11

    申请号：US15539033

    申请日：2015-12-25

    申请人： Nikon Corporation

    发明人： Kensuke Uchida ,  Akihiko Obama ,  Norikazu Yokoi ,  Hiroshi Yamamoto ,  Taku Matsuo

    IPC分类号： G02B15/14 ,  G02B15/20 ,  G02B15/22 ,  G02B13/02 ,  G03B5/02

    摘要： A variable magnification optical system includes: a first lens group having positive refractive power and arranged closest to an object; a negative lens group having negative refractive power; a positive lens group which has positive refractive power, which includes at least one lens that moves integrally with an aperture stop, and which is arranged closer to an image than the negative lens group; and a focusing group arranged between the negative lens group and the positive lens group. When varying magnification, distances between the first lens group and the negative lens group and between the negative lens group and the positive lens group are changed. When focusing, distances between the focusing group and a lens facing an object-side of the focusing group and between the focusing group and a lens facing an image-side of the focusing group are changed. A predetermined conditional expression is satisfied.

    EYEPIECE OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING EYEPIECE OPTICAL SYSTEM
    2.
    发明申请
    EYEPIECE OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING EYEPIECE OPTICAL SYSTEM 审中-公开
    光学光学系统，光学设备和制造光学光学系统的方法

    公开(公告)号：US20150205091A1

    公开(公告)日：2015-07-23

    申请号：US14676688

    申请日：2015-04-01

    申请人： Nikon Corporation

    发明人： Taku Matsuo ,  Motohisa Mouri ,  Yukio Kubota ,  Takuya Sato

    IPC分类号： G02B25/00

    CPC分类号： G02B25/001 ,  G02B13/18

    摘要： Provided is an eyepiece optical system including at least three lenses disposed in order from an observation object (Ob) along an optical axis. A final lens disposed closest to an eye point (EP) (corresponds to the third lens (L3) in FIG. 1) is fixed when adjusting the diopter, and the following conditional expressions (1) and (2) are satisfied: 2.2

    摘要翻译： 提供了一种目镜光学系统，其包括沿着光轴从观察对象（Ob）按顺序设置的至少三个透镜。 在调整屈光度时，固定最靠近眼点（EP）的最终透镜（对应于图1中的第三透镜（L3）），并满足以下条件表达式（1）和（2）：2.2 < | fe / fa | <6.0（1）0.5 <| Re2 / fa | <5.0（2）其中fe表示最终透镜的焦距，fa表示总目镜系统（EL）的焦距，Re2 表示最终透镜的眼点（EP）侧透镜表面的曲率半径。 当光学表面是非球面时，使用近轴曲率半径进行计算。

    Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method
    3.
    发明授权
    Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method 有权

    公开(公告)号：US10831005B2

    公开(公告)日：2020-11-10

    申请号：US15538989

    申请日：2015-12-25

    申请人： Nikon Corporation

    发明人： Kensuke Uchida ,  Akihiko Obama ,  Hiroshi Yamamoto ,  Taku Matsuo

    IPC分类号： G02B15/14 ,  G02B15/20 ,  G02B15/173 ,  G02B9/14 ,  G02B13/02

    摘要： A variable magnification optical system includes: a positive first lens group; a negative lens group closer to an image than the first lens group; a positive lens group closer to the image than the negative lens group and including at least one lens closer to the image than an aperture stop; and a focusing group between the negative lens group and the positive lens group. When varying magnification, the first lens group moves with respect to an image plane, and distances between the first lens group and the negative lens group and between the negative lens group and the positive lens group are changed. When focusing, a distance between the focusing group and a lens facing an object-side of the focusing group is changed, and a distance between the focusing group and a lens facing an image-side of the focusing group is changed. Predetermined conditional expressions are satisfied.

    EYEPIECE OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE EYEPIECE OPTICAL SYSTEM
    5.
    发明申请
    EYEPIECE OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE EYEPIECE OPTICAL SYSTEM 有权
    光学光学系统，光学设备和制造光学系统的方法

    公开(公告)号：US20150212289A1

    公开(公告)日：2015-07-30

    申请号：US14675790

    申请日：2015-04-01

    申请人： Nikon Corporation

    发明人： Taku Matsuo

    IPC分类号： G02B9/16 ,  H04N5/225 ,  H04N5/232 ,  G02B13/00

    CPC分类号： G02B9/16 ,  G02B9/34 ,  G02B13/0035 ,  G02B13/18 ,  G02B25/001 ,  G03B13/06 ,  H04N5/2254 ,  H04N5/23216 ,  Y10T29/49826

    摘要： Provided is an eyepiece optical system including, in order from an observation object (Ob): a first lens (L11) having positive refractive power; a second lens (L12) which has negative refractive power and of which an observation object (Ob) side lens surface is concave; and a third lens (L13) which has positive refractive power and of which an eye point (EP) side lens surface is convex. The third lens (L13) is fixed on the optical axis with respect to the observation object (Ob) when adjusting the diopter, and the following conditional expressions are satisfied: 0.65

    摘要翻译： 本发明提供一种目视光学系统，其从观察对象（Ob）的顺序依次包括具有正折射力的第一透镜（L11） 第二透镜（L12），其具有负屈光力，其中观察对象（Ob）侧透镜表面是凹的; 以及具有正屈光力并且眼点（EP）侧透镜表面为凸的第三透镜（L13）。 调整屈光度时，第三透镜​​（L13）相对于观察对象物（Ob）固定在光轴上，满足以下条件式：0.65