公开(公告)号：US20140240851A1

公开(公告)日：2014-08-28

申请号：US14271969

申请日：2014-05-07

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B13/18

CPC classification number: G02B13/18 ,  G02B9/64 ,  G02B13/04

Abstract: An imaging lens includes: a first lens group; an aperture stop; and a second lens group having a positive refractive power, in this order from an object side. The first lens group includes a negative first lens provided most toward the object side. The second lens group includes a positive lens, provided most toward an imaging surface, and a negative lens having a concave surface and an aspherical surface at least toward the object side. The following Conditional Formulae are satisfied: 0.03

Abstract translation: 成像透镜包括：第一透镜组; 孔径光阑; 以及从物体侧起依次具有正折光力的第二透镜组。 第一透镜组包括最靠近物体侧设置的负第一透镜。 第二透镜组包括最靠近成像表面设置的正透镜，以及至少朝向物体侧具有凹面和非球面的负透镜。 满足以下条件公式：0.03 <（| Sagsp1 | - | Sagas1 |）/ Re1 <0.35; 和1.819＆nlE; NdAB其中Sagsp1是负透镜的物体侧表面的有效直径的边缘处的参考球面的下垂，Sagas1是透镜的非球面的下垂，Re1是 透镜的物体侧表面，NdAB是正透镜和负透镜的平均折射率。

公开(公告)号：US20130215317A1

公开(公告)日：2013-08-22

申请号：US13858430

申请日：2013-04-08

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B13/00

CPC classification number: G02B13/009 ,  G02B15/16 ,  G02B15/173

Abstract: Disposing from an object side in the order of a positive first lens group which is fixed at the time of zooming, a negative second lens group which is moved at the time of zooming, an aperture stop, a positive third lens group which is fixed at the time of zooming, and a fourth lens group which is moved along the optical axis at the time of zooming to correct a change in image plane position arising from the zooming for focusing. The zoom lens is configured to simultaneously satisfy, when a focal length of the overall lens system at the telephoto end, an overall optical length, and an Abbe number of the second group first lens with respect to d-line are taken as ft, TL, and νd21 respectively, conditional expressions (1): 0.62

Abstract translation: 从物体侧按照变焦时固定的正的第一透镜组的顺序，在变焦时移动的负的第二透镜组，孔径光阑，固定在 缩放时间和在缩放时沿光轴移动的第四透镜组，以校正由于用于聚焦的变焦引起的图像平面位置的变化。 变焦透镜被配置为当远摄端的整个透镜系统的焦距为整个光学长度时，并且相对于d线的第二组第一透镜的阿贝数为ft，TL ，和nud21，条件表达式（1）：0.62

公开(公告)号：US20230266565A1

公开(公告)日：2023-08-24

申请号：US18169495

申请日：2023-02-15

Applicant: FUJIFILM Corporation

Inventor： Motoari OTA ,  Daiki KAWAMURA

IPC: G02B13/00 ,  G02B9/12 ,  G02B9/10

CPC classification number: G02B13/003 ,  G02B9/12 ,  G02B9/10 ,  G02B13/0035

Abstract: An imaging lens includes, in order from the object side, a first lens group that has a negative refractive power and a second lens group that has a positive refractive power. During focusing, only the second lens group moves. The first lens group includes three negative lenses successively in order from a position closest to the object side. Assuming that an open F number is FNo, a maximum half angle of view is ω, a back focal length is Bf, and a focal length of the whole system f, the imaging lens satisfies 0.8

公开(公告)号：US20220128805A1

公开(公告)日：2022-04-28

申请号：US17570528

申请日：2022-01-07

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA ,  Taiga NODA

IPC: G02B15/14 ,  G02B9/60

Abstract: The zoom lens includes, as lens groups, in order from the object side, only a first lens group having a positive power, a second lens group having a negative power, a third lens group having a positive power, a fourth lens group having a negative power, and a fifth lens group having a positive power. An aperture stop is disposed between a lens surface closest to the image side in the second lens group and a lens surface closest to the object side in the fourth lens group. During zooming, at least the first lens group, the second lens group, the third lens group, and the fourth lens group move. The first lens group consists of a negative lens, a positive lens, and a positive lens in order from the object side. The zoom lens satisfies predetermined conditional expressions.

公开(公告)号：US20200166735A1

公开(公告)日：2020-05-28

申请号：US16689242

申请日：2019-11-20

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA ,  Taiga NODA

IPC: G02B15/14 ,  G02B9/60

Abstract: The zoom lens includes, as lens groups, in order from the object side, only a first lens group having a positive power, a second lens group having a negative power, a third lens group having a positive power, a fourth lens group having a negative power, and a fifth lens group having a positive power. An aperture stop is disposed between a lens surface closest to the image side in the second lens group and a lens surface closest to the object side in the fourth lens group. During zooming, at least the first lens group, the second lens group, the third lens group, and the fourth lens group move. The first lens group consists of a negative lens, a positive lens, and a positive lens in order from the object side. The zoom lens satisfies predetermined conditional expressions.

公开(公告)号：US20180246292A1

公开(公告)日：2018-08-30

申请号：US15906055

申请日：2018-02-27

Applicant: FUJIFILM Corporation

Inventor： Ryoko TOMIOKA ,  Daiki KAWAMURA

IPC: G02B7/04 ,  G02B13/00

CPC classification number: G02B7/04 ,  G02B13/0045 ,  G02B27/646

Abstract: The imaging lens consists of a positive first lens group remaining stationary during focusing, a negative second lens group, a positive third lens group, and a negative fourth lens group remaining stationary during focusing, in order from an object side. During focusing from the infinite object to the closest object, the second lens group moves to an image side, the third lens group moves to the object side, and the fourth lens group consists of a fourth-a lens group which is a vibration-proof lens group and a fourth-b lens group, in order from the object side. In the imaging lens, predetermined conditional expressions are satisfied.

公开(公告)号：US20160062135A1

公开(公告)日：2016-03-03

申请号：US14818818

申请日：2015-08-05

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B27/64 ,  G02B15/14

CPC classification number: G02B27/646 ,  G02B15/173

Abstract: A zoom lens consists of four or five lens groups, consisting of, in order from the object side, a positive first group a negative second group, one or two middle groups including a positive mp group, and a positive rearmost group at the most image-side position of the entire system. Zooming is effected by changing all distances between the adjacent groups. The rearmost group consists of, in order from the object side, a positive front group, a negative middle group, and a positive rear group. Air spaces between the front and middle groups, and between the middle and rear groups are constant during zooming and focusing. The front group includes two positive lenses and one negative lens. Image stabilization is effected by shifting the middle group perpendicularly to the optical axis. The rear group includes one positive lens and two negative lenses. The zoom lens satisfies a given condition expression.

Abstract translation: 变焦镜头由四个或五个透镜组组成，按照从物体侧起的顺序，包括正的第一组，负的第二组，包括正的mp组的一个或两个中间组以及最多图像的正最后组 在整个系统的位置。 通过改变相邻组之间的所有距离来实现缩放。 最后面组由物体侧依次组成正前组，负中组，正后组。 正面和中间组之间以及中间和后组之间的空气间隙在变焦和聚焦期间是恒定的。 前组包括两个正透镜和一个负透镜。 通过使中间组垂直于光轴移动来实现图像稳定。 后组包括一个正透镜和两个负透镜。 变焦透镜满足给定条件表达式。

公开(公告)号：US20160062094A1

公开(公告)日：2016-03-03

申请号：US14813145

申请日：2015-07-30

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

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

CPC classification number: G02B27/646 ,  G02B15/17 ,  G02B27/0025

Abstract: A zoom lens consists of, in order from the object side, a positive first lens group which is fixed relative to the image plane during magnification change, a negative second lens group which is moved during magnification change, a negative third lens group which is moved during magnification change, a positive fourth lens group which is moved during magnification change, and a positive fifth lens group which is fixed relative to the image plane during magnification change, wherein magnification change is effected by changing all distances between the adjacent lens groups, the fifth lens group consists of, in order from the object side, a positive front group, a negative middle group, and a positive rear group, image stabilization is effected by shifting only the middle group in directions perpendicular to the optical axis direction, and the condition expression (1) is satisfied: 0.20

Abstract translation: 变焦透镜从物体的顺序依次包括在放大变化期间相对于像面固定的正的第一透镜组，在放大变化期间移动的负的第二透镜组，移动的负的第三透镜组 在倍率变化期间，在放大变化期间移动的正的第四透镜组和在放大变化期间相对于像面固定的正的第五透镜组，其中通过改变相邻透镜组之间的所有距离来实现放大率改变， 第五透镜组从物体侧依次包括正前面组，负中间组和正后组，仅通过在垂直于光轴方向的方向仅移动中间组来实现图像稳定， 满足条件表达式（1）：0.20

公开(公告)号：US20160062089A1

公开(公告)日：2016-03-03

申请号：US14818689

申请日：2015-08-05

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B15/14

CPC classification number: G02B15/14 ,  G02B15/173

Abstract: A zoom lens consists of, in order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, one or two middle lens groups including a mp lens group having a positive refractive power, and a rearmost lens group disposed at the most image side position of the entire system and having a positive refractive power, wherein magnification change is effected by changing all distances between the adjacent lens groups, and focusing from an object at infinity to a closest object is effected by moving only the entire mp lens group or only a part of lens groups forming the mp lens group along the optical axis, the lens group moved during focusing includes a positive lens and a negative lens and has a positive refractive power as a whole, and given condition expressions are satisfied.

Abstract translation: 变焦透镜从物体侧起依次具有正屈光力的第一透镜组，具有负屈光力的第二透镜组，包括具有正屈光力的mp透镜组的一个或两个中间透镜组， 以及设置在整个系统的最右侧位置并且具有正折光力的最后面的透镜组，其中通过改变相邻透镜组之间的所有距离并且从无限远的对象到最接近的对象的聚焦来实现放大变化 通过沿着光轴仅移动整个mp透镜组或仅形成一组透镜组的透镜组的一部分来实现，在聚焦期间移动的透镜组整体包括正透镜和负透镜，并且具有正的折射光焦度， 并给出条件表达式。

公开(公告)号：US20140307338A1

公开(公告)日：2014-10-16

申请号：US14317813

申请日：2014-06-27

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B13/00

CPC classification number: G02B13/0015 ,  G02B9/60 ,  G02B13/0045 ,  H04N5/225

Abstract: An imaging lens substantially consists of a first lens-group, a stop and a second lens-group in this order from an object-side. The first lens-group substantially consists of three or less lenses including at least one negative lens and a positive lens. The second lens-group substantially consists of a 21st lens-group and a 22nd lens-group in this order from the object-side. The 21st lens-group substantially consists of three or less lenses and has positive refractive-power. The 22nd lens-group substantially consists of two lenses of a negative lens and a positive lens in this order from the object-side. Predetermined conditional formulas about distance on an optical-axis from a most-object-side lens surface in an entire system to an image-plane, maximum image height, distance on the optical-axis from a most-object-side lens surface in the first lens-group to a most-image-side lens surface in the second lens-group, and focal-length of the entire system are satisfied.

Abstract translation: 成像透镜基本上由物体侧依次包括第一透镜组，光阑和第二透镜组。 第一透镜组基本上由三个或更少的透镜组成，包括至少一个负透镜和正透镜。 第二透镜组从物体侧起依次由第21透镜组和第22透镜组构成。 第21透镜组基本上由三个或更少的透镜组成并具有正的折光力。 第22透镜组从物体侧开始依次由负透镜和正透镜的两个透镜组成。 关于从整个系统中的最物体侧透镜表面到像平面的光轴上的距离的预定条件公式，最大图像高度，来自最主体侧透镜表面的光轴上的距离 第一透镜组到第二透镜组中的最图像侧透镜表面，并且满足整个系统的焦距。