公开(公告)号：US20140340769A1

公开(公告)日：2014-11-20

申请号：US14452745

申请日：2014-08-06

Applicant: FUJIFILM Corporation

Inventor： Yasutaka SHIMADA ,  Michio CHO

IPC: G02B13/06 ,  G02B9/64 ,  G02B13/00

CPC classification number: G02B13/06 ,  G02B9/64 ,  G02B13/006

Abstract: A super wide angle lens substantially consists of a positive first lens group in which a positive first lens, a negative second lens, a negative third lens, a negative fourth lens, a positive fifth lens, a sixth lens unit that is a cemented lens, a seventh lens, an aperture stop, and an eighth lens unit that is a cemented lens are arranged in this order from an object side, a second lens group in which a first lens unit that is a positive single lens or a cemented lens and a second lens unit that is a cemented lens are arranged in this order from the object side, and a third lens group including a positive lens. The super wide angle lens is structured in such a manner to satisfy conditional formula (1): 0.8

Abstract translation: 超广角镜头基本上由正的第一透镜组构成，其中正的第一透镜，负的第二透镜，负的第三透镜，负的第四透镜，正的第五透镜，作为胶合透镜的第六透镜单元， 第七透镜，孔径光阑和作为胶合透镜的第八透镜单元从物体侧依次配置，第二透镜组，其中作为正单透镜的第一透镜单元或胶合透镜， 作为胶合透镜的第二透镜单元从物体侧依次排列，以及包括正透镜的第三透镜组。 超广角镜头以满足条件式（1）的方式构成：0.8 <（T16 + T17）/ f <2.5。

公开(公告)号：US20240353652A1

公开(公告)日：2024-10-24

申请号：US18638523

申请日：2024-04-17

Applicant: FUJIFILM Corporation

Inventor： Yuya HIRAKAWA ,  Masato KONDO ,  Shunsuke MIYAGISHIMA ,  Yasutaka SHIMADA

IPC: G02B9/12

CPC classification number: G02B9/12

Abstract: An imaging lens consists of, in order from the object side to the image side, a first lens group, a stop, a second lens group, and a third lens group. At least a spacing between the second lens group and the third lens group changes during focusing. The number of lenses included in the imaging lens is equal to or greater than 7 and equal to or less than 10. The imaging lens satisfies predetermined conditional expressions.

公开(公告)号：US20230075727A1

公开(公告)日：2023-03-09

申请号：US17819176

申请日：2022-08-11

Applicant: FUJIFILM Corporation

Inventor： Takuya TANAKA ,  Yasutaka SHIMADA

IPC: G02B13/00 ,  G02B9/12

Abstract: An imaging lens consisting of, in order from an object side to an image side: a first lens group that has a positive refractive power; a second lens group that has a positive refractive power; and a third lens group, wherein: during focusing, the second lens group moves along an optical axis, and the first lens group and the third lens group remain stationary with respect to an image plane, the second lens group includes a stop, an Lp1 lens, which is a positive lens, is disposed closest to the object side in the second lens group, an Lp2 lens, which is a positive lens, is disposed closest to the image side in the second lens group.

公开(公告)号：US20190094505A1

公开(公告)日：2019-03-28

申请号：US16133511

申请日：2018-09-17

Applicant: FUJIFILM Corporation

Inventor： Yasutaka SHIMADA ,  Michio CHO

IPC: G02B15/16 ,  G02B27/00

Abstract: The variable magnification optical system includes, in order from an object side, a positive first lens group disposed at a position closest to the object side, a variable magnification lens group which is disposed at a position closest to the object side among negative lens groups and moves during changing magnification, an intermediate group including at least one lens group, and a positive final lens group which is disposed at a position closest to the image side. The variable magnification lens group, the intermediate group, and the final lens group are continuously disposed. The variable magnification optical system includes at least one LA lens. This LA lens satisfies predetermined conditional expressions relating to a refractive index, an Abbe number, and a partial dispersion ratio, and is located from the variable magnification lens group to the intermediate group.

公开(公告)号：US20180373001A1

公开(公告)日：2018-12-27

申请号：US16120475

申请日：2018-09-04

Applicant: FUJIFILM Corporation

Inventor： Takuya TANAKA ,  Yasutaka SHIMADA

IPC: G02B15/10

Abstract: An extender lens is removably inserted into a master lens, performs an increase in a focal length without changing an imaging position due to insertion, and consists of a positive first lens group and a negative second lens group in order from the object side. The first lens group consists of one or more positive lenses in order from the object side, and a three-lens cemented lens having three lenses of a positive lens, a negative lens, and a positive lens having cemented together in order from the object side. The following Conditional Expression (1) relating to an Abbe number ν1n of the negative lens of the three-lens cemented lens is satisfied: 26

公开(公告)号：US20180364461A1

公开(公告)日：2018-12-20

申请号：US16110155

申请日：2018-08-23

Applicant: FUJIFILM Corporation

Inventor： Yasutaka SHIMADA ,  Takuya TANAKA

IPC: G02B15/163 ,  G02B13/18 ,  G02B13/04

Abstract: The zoom lens consists of, in order from the object side, a positive first lens group G1, a negative second lens group G2, a negative third lens group G3, a stop, and a positive fourth lens group G4. During zooming, the first lens group G1 and the fourth lens group G4 remain stationary, and the second lens group G2 and the third lens group G3 move. The first lens group G1 consists of, in order from the object side, a negative first lens group front group G1A that remains stationary during focusing, a positive first lens group intermediate group G1B that moves during focusing, and a positive first lens group rear group G1C that remains stationary during focusing. The following conditional expression relating to an Abbe number νn1A2 of the second negative lens from the object side is satisfied: 65

公开(公告)号：US20150355440A1

公开(公告)日：2015-12-10

申请号：US14730442

申请日：2015-06-04

Applicant: FUJIFILM Corporation

Inventor： Shinkichi IKEDA ,  Yasutaka SHIMADA

IPC: G02B15/16

CPC classification number: G02B15/173

Abstract: A zoom lens consists of five lens groups including, in order from the object side, positive, negative, positive, positive, and positive lens groups. During magnification change, the first and fifth lens groups are fixed relative to the image plane, and the second, third, and fourth lens groups are moved to change distances therebetween. During magnification change from the wide-angle end to the telephoto end, the second lens group is moved from the object side toward the image plane side, and the fourth lens group is moved from the image plane side toward the object side. The fifth lens group includes at least two negative lenses, and satisfies the condition expression (1) below: 1.90

Abstract translation: 变焦透镜由五个透镜组组成，包括从物体侧起的正，负，正，正和正透镜组。 在放大变化期间，第一透镜组和第五透镜组相对于图像平面固定，并且移动第二透镜组和第三透镜组以改变它们之间的距离。 在从广角端到望远端的倍率变化期间，第二透镜组从物体侧朝向像面侧移动，并且第四透镜组从图像平面侧向物体侧移动。 第五透镜组包括至少两个负透镜，并且满足以下条件表达式（1）：1.90

公开(公告)号：US20150355436A1

公开(公告)日：2015-12-10

申请号：US14726763

申请日：2015-06-01

Applicant: FUJIFILM Corporation

Inventor： Yasutaka SHIMADA ,  Shinkichi IKEDA

IPC: G02B13/00 ,  H04N5/225 ,  H04N5/232 ,  G02B15/14

CPC classification number: G02B15/173

Abstract: A five-group zoom lens includes, in order from the object side, positive, negative, positive, positive, and positive groups. During magnification change, the first and fifth groups are fixed relative to the image plane, and the second, third, and fourth groups are moved to change distances therebetween. During magnification change from the wide-angle end to the telephoto end, the second group is moved from the object side toward the image plane side, the fourth group is moved from the image plane side toward the object side, and a third-fourth combined lens group, which is the combination of the third group combined and the fourth group, and the second group simultaneously pass through their respective points at which the imaging magnification is −1×. The third-fourth combined lens group includes at least one negative lens, and satisfies the condition expression (1) below: 29

Abstract translation: 五组变焦镜头按照从物体侧起的顺序包括正，负，正，正和正组。 在放大变化期间，第一组和第五组相对于图像平面固定，并且移动第二组，第三组和第四组以改变它们之间的距离。 在从广角端到望远端的倍率变化期间，第二组从物体侧朝向像面侧移动，第四组从图像平面侧向物体侧移动，第三组合 透镜组是第三组合和第四组的组合，第二组同时通过其成像倍数为-1×的各自的点。 第三第四组合透镜组包括至少一个负透镜，并且满足以下条件表达式（1）：29 <＆ngr; dG34n <37（1）。

公开(公告)号：US20140146397A1

公开(公告)日：2014-05-29

申请号：US14170024

申请日：2014-01-31

Applicant: FUJIFILM Corporation

Inventor： Shinkichi IKEDA ,  Yasutaka SHIMADA

IPC: G02B15/14

CPC classification number: G02B15/14 ,  G02B13/18 ,  G02B15/10 ,  G02B15/167 ,  G02B15/20

Abstract: A variable magnification optical system includes a relay lens group (a fifth lens group) substantially consisting of a relay front group and a relay rear group with a predetermined air space therebetween, and which is fixed during magnification change and has image formation action, and an extender lens group insertably and detachably arranged between the relay front group and the relay rear group, and which extends a focal length toward a telephoto side without changing an image formation position. The extender lens group substantially consists of a first lens group having positive refractive power and a second lens group having negative refractive power in this order from an object side. The second lens group is a cemented lens substantially consisting of a convex meniscus lens, a biconcave lens and a convex meniscus lens in this order from the object side.

Abstract translation: 可变放大率光学系统包括基本上由继电器前组和后继组组成的中继透镜组（第五透镜组），其间具有预定的空气间隔，并且在放大变化期间被固定并具有成像动作， 延伸透镜组可插入地且可拆卸地布置在继电器前组和继电器后组之间，并且将焦距延伸到远摄侧而不改变图像形成位置。 扩展透镜组基本上由具有正屈光力的第一透镜组和从物体侧开始依次具有负屈光力的第二透镜组构成。 第二透镜组是从物体侧起依次由凸弯月形透镜，双凹透镜和凸弯月形透镜构成的胶合透镜。