IMAGING LENS AND IMAGING APPARATUS
    11.
    发明申请
    IMAGING LENS AND IMAGING APPARATUS 有权
    成像镜头和成像设备

    公开(公告)号:US20160085050A1

    公开(公告)日:2016-03-24

    申请号:US14856087

    申请日:2015-09-16

    CPC classification number: G02B9/64 G02B15/177

    Abstract: An imaging lens is constituted essentially by, in order from the object side to the image side, a negative first lens group, a positive second lens group, a stop, and a positive third lens group. The first lens group is constituted essentially by four or fewer lenses, has a positive lens and a negative meniscus lens provided adjacent to each other in this order from the most object side, and further has a negative lens at the most image side. The second lens group is constituted essentially by one single lens. The third lens group is constituted essentially by five or fewer lenses, and has four lenses having refractive powers of different signs adjacent to each other provided in order as lenses most toward the image side. Predetermined conditional formulae are satisfied.

    Abstract translation: 成像透镜基本上由从物体侧到像侧依次构成负的第一透镜组,正的第二透镜组,光阑和正的第三透镜组。 第一透镜组基本上由四个或更少的透镜构成,具有从最物体侧依次彼此相邻设置的正透镜和负弯月形透镜,并且还具有最多像侧的负透镜。 第二透镜组基本由一个单一透镜构成。 第三透镜组基本上由五个或更少的透镜构成,并且具有四个透镜,其具有彼此相邻的具有不同标志的折射光焦度,以按照最向着像侧的透镜提供。 满足预定条件公式。

    VARIABLE MAGNIFICATION OPTICAL SYSTEM AND IMAGING APPARATUS

    公开(公告)号:US20220236543A1

    公开(公告)日:2022-07-28

    申请号:US17560235

    申请日:2021-12-22

    Abstract: The variable magnification optical system consists of, in order from an object side to an image side, a first lens group that has a positive refractive power, a plurality of lens groups, and a final lens group that has a positive refractive power. During changing magnification, a spacing between the first lens group and the lens group closest to the object side among the plurality of lens groups changes, all spacings between adjacent lens groups in the plurality of lens groups change, and a spacing between the lens group closest to the image side and the final lens group among the plurality of lens groups changes.

    ZOOM LENS AND IMAGING APPARATUS
    15.
    发明申请

    公开(公告)号:US20200064603A1

    公开(公告)日:2020-02-27

    申请号:US16541867

    申请日:2019-08-15

    Abstract: The zoom lens consists of, in order from an object side: a positive first lens group that does not move during zooming; a middle group that consists of two or more movable lens groups moving during zooming; and a subsequent group that has a lens group including a stop at a position closest to the object side. The middle group has at least two negative movable lens groups. The subsequent group includes at least one positive LA lens that satisfies predetermined conditional expressions relating to the refractive index, the Abbe number, and the partial dispersion ratio.

    IMAGING LENS AND IMAGING APPARATUS
    16.
    发明申请

    公开(公告)号:US20170242222A1

    公开(公告)日:2017-08-24

    申请号:US15412766

    申请日:2017-01-23

    CPC classification number: G02B13/0045 G02B7/04 G02B9/64 G02B13/04

    Abstract: The imaging lens includes, in order from the object side, a first lens group that remains stationary during focusing; a diaphragm; and a positive second lens group that moves to the object side during focusing from a long range to a close range. The second lens group includes a positive Z lens that is formed continuously in order from a most image side, a negative Y lens that has an absolute value of a radius of curvature of an object side surface smaller than an absolute value of a radius of curvature of an image side surface, a positive X lens, and a negative W lens that has an absolute value of a radius of curvature of an image side surface smaller than that of an object side surface. The imaging lens satisfies a conditional expression about of the radii of curvature of the X lens and the W lens.

    IMAGING LENS AND IMAGING APPARATUS
    17.
    发明申请

    公开(公告)号:US20170242221A1

    公开(公告)日:2017-08-24

    申请号:US15412077

    申请日:2017-01-23

    CPC classification number: G02B13/0045 G02B7/04 G02B9/64 G02B13/04

    Abstract: The imaging lens includes, in order from the object side, a first lens group that remains stationary during focusing; a diaphragm; and a positive second lens group that moves to the object side during focusing from a long range to a close range. The first lens group includes, in order from the object side: a negative meniscus lens that has an absolute value of a radius of curvature of an image side surface smaller than that of an object side surface, a negative lens, a positive lens, and a negative lens. The second lens group includes five or less lenses, and includes: a positive Z lens that is formed continuously in order from a most image side; a negative Y lens that has an absolute value of a radius of curvature of an object side surface smaller than that of an image side surface; and a positive X lens.

    VARIABLE MAGNIFICATION OPTICAL SYSTEM AND IMAGING APPARATUS
    18.
    发明申请
    VARIABLE MAGNIFICATION OPTICAL SYSTEM AND IMAGING APPARATUS 有权
    可变放大光学系统和成像装置

    公开(公告)号:US20130329305A1

    公开(公告)日:2013-12-12

    申请号:US13965481

    申请日:2013-08-13

    Inventor: Takashi KUNUGISE

    CPC classification number: G02B15/14 G02B15/177

    Abstract: A variable magnification optical system consists of first lens group having negative refractive power and second lens group having positive refractive power, which are in this order from an object side, and a distance in an optical axis direction between the first lens group and the second lens group changes when magnification is changed. The second lens group consists of a positive sixth lens, a negative seventh lens, a positive eighth lens, and a cemented lens composed of a negative ninth lens and a positive tenth lens cemented together, which are in this order from the object side, and all of the three positive lenses, which are the sixth lens, the eighth lens and the tenth lens, are double-convex lenses. A predetermined formula is satisfied.

    Abstract translation: 可变放大率光学系统由具有负折光力的第一透镜组和具有正折射光焦度的第二透镜组构成,其从物体侧起依次为第一透镜组,第一透镜组和第二透镜之间的光轴方向上的距离 当放大倍数变化时,组发生变化。 第二透镜组包括从物体侧起依次为正的第六透镜,负的第七透镜,正的第八透镜和由负第九透镜和正十面透镜组成的胶合透镜,以及 作为第六透镜,第八透镜和第十透镜的三个正透镜都是双凸透镜。 满足规定的公式。

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