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：US20250164743A1

公开(公告)日：2025-05-22

申请号：US19034989

申请日：2025-01-23

Applicant: FUJIFILM Corporation

Inventor： Taiga NODA ,  Ryoko TOMIOKA

IPC: G02B9/12

Abstract: The imaging lens consists of, in order from the object side, a first lens group having a positive refractive power, a stop, a second lens group having a positive refractive power, and a third lens group. The third lens group includes one or more positive lenses and one or more negative lenses. During focusing, an entirety of the first lens group, the stop, and the second lens group, or an entirety of the second lens group integrally moves as a focus group, and the third lens group remains stationary with respect to an image plane. The imaging lens satisfies predetermined conditional expressions.

公开(公告)号：US20250035898A1

公开(公告)日：2025-01-30

申请号：US18781991

申请日：2024-07-23

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA ,  Hiroki SAITO ,  Ryoko TOMIOKA ,  Daiki KOMATSU

IPC: G02B15/14 ,  G02B13/00

Abstract: A zoom lens consists of, in order from an object side to an image side: an object side positive group which has a positive refractive power; an object side negative group which has a negative refractive power; an intermediate group; and a final group. The object side positive group, the object side negative group, the intermediate group, and the final group each include at least one lens group. All spacings between adjacent lens groups change, and all mutual spacings between lenses in each lens group do not change during zooming. All lenses in the object side positive group and all lenses in the intermediate group remain stationary with respect to an image plane during focusing. The zoom lens satisfies predetermined conditional expressions.

公开(公告)号：US20230350172A1

公开(公告)日：2023-11-02

申请号：US18183126

申请日：2023-03-13

Applicant: FUJIFILM Corporation

Inventor： Ryoko TOMIOKA ,  Hiroki SAITO

IPC: G03B7/0993 ,  G02B15/14 ,  G02B13/02

CPC classification number: G02B15/145121 ,  G02B13/02 ,  G03B7/0993

Abstract: A lens unit includes a variable magnification optical system provided with a stop that adjusts a light amount and a processor that controls an opening amount of the stop based on information on a magnification change of the variable magnification optical system. In a case where a maximum value and a minimum value of an F-Number in the entire variable magnification region of the variable magnification optical system are respectively Fmax and Fmin and an average value of an F-Number at a wide angle end and an F-Number at a telephoto end of the variable magnification optical system is Fave, the processor is configured to control the opening amount within a range satisfying 3

公开(公告)号：US20220276464A1

公开(公告)日：2022-09-01

申请号：US17667312

申请日：2022-02-08

Applicant: FUJIFILM Corporation

Inventor： Taiga NODA ,  Ryoko TOMIOKA

IPC: G02B9/12 ,  G02B7/04 ,  G02B13/00

Abstract: The imaging lens consists of, in order from the object side, a first lens group having a positive refractive power, a stop, a second lens group having a positive refractive power, and a third lens group. The third lens group includes one or more positive lenses and one or more negative lenses. During focusing, an entirety of the first lens group, the stop, and the second lens group, or an entirety of the second lens group integrally moves as a focus group, and the third lens group remains stationary with respect to an image plane. The imaging lens satisfies predetermined conditional expressions.

公开(公告)号：US20160004052A1

公开(公告)日：2016-01-07

申请号：US14855436

申请日：2015-09-16

Applicant: FUJIFILM Corporation

Inventor： Ryoko TOMIOKA

IPC: G02B15/16 ,  G02B13/00

CPC classification number: G02B15/16 ,  G02B5/005 ,  G02B9/60 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/0065 ,  G02B13/009 ,  G02B15/14 ,  G02B15/173 ,  G02B15/177 ,  G02B15/20 ,  G02B17/08 ,  G02B27/0025

Abstract: A zoom lens consists of, in order from the object-side, a first lens-group having positive refractive power, and which is fixed during magnification change, a second lens-group having negative refractive power, and which moves during magnification change, a third lens-group having positive refractive power, and which is fixed during magnification change, a fourth lens-group having positive refractive power, and which moves during magnification change, and a fifth lens-group having negative refractive power, and which moves during magnification change. The first lens-group consists of, in order from the object-side, a front group having negative refractive power, a reflection member that bends an optical path and a rear group having positive refractive power. The fourth lens-group includes at least a cemented lens of a positive lens and a negative lens, and the following conditional expression (1) is satisfied: 0.8

Abstract translation: 变焦透镜从物体依次包括具有正折光力的第一透镜组，并且在放大变化期间被固定，具有负折光力的第二透镜组，并且在放大变化期间移动， 具有正折光力的第三透镜组，并且在放大变化期间被固定，具有正折光力并且在放大变化期间移动的第四透镜组，以及具有负屈光力的第五透镜组，并且在放大期间移动 更改。 第一透镜组从物体侧依次包括具有负屈光力的前组，弯曲光路的反射构件和具有正屈光力的后组。 第四透镜组至少包括正透镜和负透镜的胶合透镜，并且满足以下条件表达式（1）：0.8

公开(公告)号：US20130258162A1

公开(公告)日：2013-10-03

申请号：US13903279

申请日：2013-05-28

Applicant: FUJIFILM Corporation

Inventor： Ryoko TOMIOKA

IPC: G02B15/14

CPC classification number: G02B15/14 ,  G02B15/173

Abstract: A zoom lens includes a positive first lens group, which is fixed during changing magnification and during focusing, a negative second lens group, which is moved during changing magnification, a positive third lens group, which is fixed during changing magnification and during focusing, a positive fourth lens group, which is moved during changing magnification and during focusing, and a negative fifth lens group, which is moved during changing magnification, which are in this order from an object side. A lens group constituting the first lens group consists of a negative front group and a positive rear group in this order from the object side. The second lens group consists of four lenses of a negative lens, a positive lens, a negative lens, and a positive lens or a negative lens arranged in this order from the object side.

Abstract translation: 变焦透镜包括在变倍倍率和聚焦期间固定的正第一透镜组，在变倍放大期间移动的负第二透镜组，在改变倍率和聚焦期间固定的正第三透镜组， 在变焦倍率和聚焦期间移动的正的第四透镜组以及在变化放大期间移动的负第五透镜组，其从物体侧开始依次排列。 构成第一透镜组的透镜组从物体侧起依次由负前组和正后组构成。 第二透镜组由从物体侧依次排列的负透镜，正透镜，负透镜以及正透镜或负透镜的四个透镜组成。