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公开(公告)号：US20150241676A1
公开(公告)日：2015-08-27
申请号：US14628599
申请日：2015-02-23
Applicant: FUJIFILM Corporation
Inventor： Daiki KOMATSU , Toshihiro AOI , Yasutaka SHIMADA
Abstract: A zoom lens essentially consists of positive first lens group, negative second lens group, negative third lens group, negative fourth lens group, and positive fifth lens group in this order from an object side. First and fifth lens groups are fixed with respect to an image plane, and second through fourth lens groups move in such a manner that a distance from each other changes when magnification is changed from a wide angle end to a telephoto end. First lens group essentially consists of 11th lens group having negative refractive power, 12th lens group having positive refractive power, and 13th lens group having positive refractive power in this order from the object side. 11th and 13th lens groups are fixed with respect to the image plane and 12th lens group moves during focusing. Further, the following conditional expression (1) is satisfied: 2.10
Abstract translation: 从物体侧起，变焦透镜基本上由正的第一透镜组，负的第二透镜组，负的第三透镜组，负的第四透镜组和正的第五透镜组组成。 第一透镜组和第五透镜组相对于图像平面固定，并且第二至第四透镜组以这样的方式移动，即当放大率从广角端变为远摄端时彼此之间的距离发生变化。 第一透镜组基本上由具有负屈光力的第十一透镜组，具有正屈光力的第十二透镜组和具有正折射光焦度的第13透镜组构成。 第11和第13透镜组相对于图像平面固定，第12透镜组在聚焦期间移动。 此外，满足以下条件式（1）：2.10
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公开(公告)号：US20150022902A1
公开(公告)日：2015-01-22
申请号：US14336387
申请日：2014-07-21
Applicant: FUJIFILM Corporation
Inventor： Yasutaka SHIMADA
IPC: G02B15/17
CPC classification number: G02B15/17
Abstract: A zoom lens substantially consists of a positive first lens group, a negative second lens group which moves from the object side to the image side while changing magnification from the wide angle end to the telephoto end, a negative third lens group, and a positive fourth lens group having an aperture stop St, wherein the first lens group includes a negative meniscus lens on the most-object side; the second lens group is composed of a negative second-a lens group having at least one aspheric surface and a positive second-b lens group, and the distance therebetween changes while changing magnification; a third lens group moves such that the distance between the third lens group and a fourth lens group at the telephoto end becomes narrower than at the wide angle end; and conditional expression (1) below is satisfied: 1.89
Abstract translation: 变焦透镜基本上由正的第一透镜组，负的第二透镜组，从物体侧向像侧移动，同时从广角端到望远端的倍率变化，负的第三透镜组和正的第四透镜组 具有孔径光阑St的透镜组，其中第一透镜组在最物体侧包括负弯月形透镜; 第二透镜组由具有至少一个非球面和正二次透镜组的负二次透镜组构成，并且其间的距离在改变倍率时变化; 第三透镜组移动，使得在望远端的第三透镜组和第四透镜组之间的距离变得比广角端窄; 并满足以下条件式（1）：1.89
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公开(公告)号：US20230341664A1
公开(公告)日：2023-10-26
申请号：US18304391
申请日：2023-04-21
Applicant: FUJIFILM Corporation
Inventor： Yasutaka SHIMADA , Shunsuke MIYAGISHIMA
Abstract: The imaging lens includes, in order from an object side, a first lens group that has a refractive power, a second lens group that has a positive refractive power, and a third lens group that has a negative refractive power. During focusing, the second lens group moves. The second lens group includes a stop and at least three negative lenses. The imaging lens satisfies predetermined conditional expressions.
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公开(公告)号：US20200310090A1
公开(公告)日：2020-10-01
申请号：US16826725
申请日：2020-03-23
Applicant: FUJIFILM Corporation
Inventor： Takuya TANAKA , Takuya TANAKA , Masanao KAWANA , Yasutaka SHIMADA
Abstract: The zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the second lens group, the third lens group, and the fourth lens group move. The first lens group consists of, in order from an object side, a negative first a lens group, a positive first b lens group that moves during focusing, and a positive first c lens group. A most-image-side lens of the first b lens group is a negative meniscus lens having a convex surface facing an object side.
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公开(公告)号：US20190094533A1
公开(公告)日：2019-03-28
申请号：US16133038
申请日：2018-09-17
Applicant: FUJIFILM Corporation
Inventor： Yukiko NAGATOSHI , Shunsuke MIYAGISHIMA , Kazuyoshi OKADA , Ukyo TOMIOKA , Masaru YONEZAWA , Yasutaka SHIMADA
IPC: G02B27/00 , G02B13/00 , G02B15/177 , G02B13/04 , G02B9/64
Abstract: The imaging lens includes at least one negative lens that satisfies predetermined Conditional Expressions (1) to (3) indicating conditions in which dispersion is relatively low and refractive index is high while having a negative rate of change of the refractive index. A positive lens having a largest Abbe number at the d line among positive lenses included in the imaging lens satisfies predetermined Conditional Expressions (4) and (5).
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Patent Agency Ranking
公开(公告)号：US20150277089A1
公开(公告)日：2015-10-01
申请号：US14735376
申请日：2015-06-10
Applicant: FUJIFILM Corporation
Inventor： Yasutaka SHIMADA
Abstract: A retrofocus-type wide-angle lens consists of a negative first lens-group, a positive second lens-group, and a positive third lens-group in this order from an object-side. The first lens-group consists of a positive meniscus-lens with its convex surface facing the object-side and three negative meniscus-lenses with their convex surfaces facing the object-side in this order from the object-side. The second lens-group includes two cemented lenses, and a lens closest to an image-side in the second lens-group is one of the at least two cemented lenses. The third lens-group consists of a 3a-th lens-group, which consists of a positive meniscus-lens with its convex surface facing the object-side and a negative meniscus-lens with its convex surface facing the object-side, and a 3b-th lens-group, which includes at least two cemented lenses and has positive refractive power as a whole, in this order from the object-side.
Abstract translation: 反射型广角镜从物体侧依次由负的第一透镜组，正的第二透镜组和正的第三透镜组构成。 第一透镜组由其凸面朝向物体侧的正弯月透镜和从物体侧依次以面朝物体侧的三个负弯月透镜组成。 第二透镜组包括两个胶合透镜，并且最靠近第二透镜组中的图像侧的透镜是至少两个胶合透镜中的一个。 第三透镜组由第三十三透镜组组成，其由其凸面朝向物体侧的正弯月透镜和其凸面朝向物体侧的负弯月透镜组成，并且 第3b透镜组，其包括至少两个胶合透镜，并且从物体侧开始依次具有正的折射光焦度。
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公开(公告)号：US20220003977A1
公开(公告)日：2022-01-06
申请号：US17355254
申请日：2021-06-23
Applicant: FUJIFILM Corporation
Inventor： Yasutaka SHIMADA , Takuya TANAKA , Takashi KUNUGISE
Abstract: A zoom 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 negative refractive power; an intermediate lens group that consists of one or two lens groups; and a final lens group, wherein during zooming, the second lens group moves along an optical axis, and all distances between adjacent lens groups change.
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公开(公告)号：US20200310091A1
公开(公告)日：2020-10-01
申请号：US16828641
申请日：2020-03-24
Applicant: FUJIFILM Corporation
Inventor： Masanao KAWANA , Yasutaka SHIMADA , Takuya TANAKA , Takuya TANAKA
Abstract: The zoom lens consists of, in order from an object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group. During zooming, the second lens group, the third lens group, and the fourth lens group move. The first lens group consists of, in order from an object side, a negative first a lens group, a positive first b lens group that moves during focusing, and a positive first c lens group. The second lens group includes one positive lens and one or more negative lenses successively in order from a most object side to an image side.
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公开(公告)号：US20180239119A1
公开(公告)日：2018-08-23
申请号：US15843061
申请日：2017-12-15
Applicant: FUJIFILM Corporation
Inventor： Yasutaka SHIMADA , Taiga NODA
CPC classification number: G02B15/142 , G02B13/02 , G02B15/167 , G02B27/0025
Abstract: The zoom lens consists of, in order from the object side, a first lens group that has a positive refractive power and remains stationary during zooming, a second lens group that moves during zooming, and a subsequent lens group. The first lens group has a negative lens at a position closest to the object side. The subsequent lens group has, successively in order from a position closest to the image side, a final positive lens group that remains stationary during zooming, a positive lens group that moves during zooming, a stop, and a negative lens group that moves during zooming. The stop moves integrally with the positive lens group during zooming. The stop first moves to the object side, and reversely moves during zooming from the wide-angle end to the telephoto end. Predetermined conditional expressions are satisfied.
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公开(公告)号：US20160259155A1
公开(公告)日：2016-09-08
申请号：US15017006
申请日：2016-02-05
Applicant: FUJIFILM Corporation
Inventor： Yasutaka SHIMADA , Michio CHO
IPC: G02B15/173 , G02B27/00
CPC classification number: G02B15/173 , G02B27/005
Abstract: A zoom lens consists of five lens groups consisting of, in order from the object side, positive, negative, positive, positive, and positive lens groups, wherein the first and fifth lens groups are fixed relative to the image plane during magnification change, the second to fourth lens groups are moved to change distances therebetween during magnification change, the second lens group is moved from the object side toward the image plane side during magnification change from the wide angle end to the telephoto end, the second lens group includes at least one positive lens and at least four negative lenses including three negative lenses that are successively disposed from the most object side, and satisfies the condition expressions (1) and (2) below: 25
Abstract translation: 变焦透镜由五个透镜组组成，从物体侧起依次为正，负，正，正透镜组和正透镜组，其中第一透镜组和第五透镜组在放大变化期间相对于像平面固定， 移动第二至第四透镜组以在放大变化期间改变其间的距离，在从广角端到望远端的放大变化期间，第二透镜组从物体侧朝向像面侧移动，第二透镜组至少包括 一个正透镜和至少四个负透镜，包括从最物体侧连续设置的三个负透镜，并满足以下条件表达式（1）和（2）：25 <νd21<45（1）和0.31
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