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公开(公告)号：US11650401B2
公开(公告)日：2023-05-16
申请号：US17024941
申请日：2020-09-18
Applicant: FUJIFILM Corporation
Inventor： Shinkichi Ikeda
IPC: G02B15/14 , G02B15/20 , G02B15/167
CPC classification number: G02B15/145129 , G02B15/167 , G02B15/20
Abstract: A 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 first lens group and the fifth lens group are not moved, and the second lens group, the third lens group, and the fourth lens group are moved. The second lens group includes a negative lens closest to the object side. In a case where a focal length of the second lens group is denoted by f2 and a focal length of the negative lens of the second lens group closest to the object side is denoted by f21, the zoom lens satisfies 0.6
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公开(公告)号：US09715093B2
公开(公告)日：2017-07-25
申请号：US14867943
申请日：2015-09-28
Applicant: FUJIFILM Corporation
Inventor： Shinkichi Ikeda , Daiki Komatsu , Michio Cho
IPC: G02B9/62 , G02B15/20 , G02B15/177
CPC classification number: G02B15/20 , G02B15/177
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, a third lens group having a positive refractive power, a fourth lens group having a negative refractive power, a fifth lens group having a positive refractive power, and a sixth lens group having a positive refractive power, wherein magnification change is effected by changing all distances between adjacent lens groups. The second lens group is moved from the object side toward the image side during magnification change from the wide-angle end to the telephoto end. The position of the third lens group at the telephoto end is nearer to the image side than the position of the third lens group at the wide-angle end.
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公开(公告)号：US09606337B2
公开(公告)日：2017-03-28
申请号：US14730442
申请日：2015-06-04
Applicant: FUJIFILM Corporation
Inventor： Shinkichi Ikeda , Yasutaka Shimada
IPC: G02B15/14 , G02B15/173
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
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公开(公告)号：US09229202B2
公开(公告)日：2016-01-05
申请号：US14170024
申请日：2014-01-31
Applicant: FUJIFILM Corporation
Inventor： Shinkichi Ikeda , Yasutaka Shimada
IPC: G02B15/14 , G02B15/10 , G02B13/18 , G02B15/167 , G02B15/20
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。
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公开(公告)号：US09261684B2
公开(公告)日：2016-02-16
申请号：US14564755
申请日：2014-12-09
Applicant: FUJIFILM Corporation
Inventor： Shinkichi Ikeda , Toshihiro Aoi
IPC: G02B15/14 , G02B15/173 , G02B15/20 , G02B13/18
CPC classification number: G02B15/173 , G02B13/18 , G02B15/20
Abstract: The zoom lens substantially consists of a positive first lens group fixed while changing magnification, a negative second lens group which moves from the object side to the image side while changing magnification, a positive third lens group which moves while changing magnification, and a positive fourth lens group which moves from the image side to the object side while changing magnification, and a positive fifth lens group fixed while changing magnification in this order from the object side. A floating system in which the third lens group and the fourth lens group move relative to each other while changing magnification is adopted. The image formation magnification rates of the combined lens group formed by the third lens group and the fourth lens group together and the second lens group simultaneously pass −1× point while changing magnification from the wide angle end to the telephoto end.
Abstract translation: 变焦透镜基本上由改变倍率固定的正的第一透镜组，在改变倍率时从物体侧移动到像侧的负的第二透镜组，在改变倍率时移动的正的第三透镜组以及正的第四透镜组 透镜组，其在改变倍率的同时从图像侧移动到物体侧;以及正的第五透镜组，在从物体侧依次改变倍率时固定。 采用浮动系统，其中第三透镜组和第四透镜组在改变倍率的同时相对于彼此移动。 由第三透镜组和第四透镜组形成的组合透镜组和第二透镜组的图像形成倍率在从广角端到望远端的倍率变化的同时同时通过-1×点。
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Patent Agency Ranking
公开(公告)号：US09417439B2
公开(公告)日：2016-08-16
申请号：US14698051
申请日：2015-04-28
Applicant: FUJIFILM Corporation
Inventor： Toshihiro Aoi , Shinkichi Ikeda
IPC: G02B15/14 , G02B15/173
CPC classification number: G02B15/14 , G02B15/173
Abstract: A zoom lens consists of a positive first lens group fixed during zooming, a negative second lens group moved during zooming, a positive third lens group moved during zooming to correct an image plane variation due to the zooming, and a positive fourth lens group fixed during zooming and includes a stop on the most object side. The second lens group includes two or more positive lenses and one or more negative lenses. The zoom lens satisfies predetermined conditional expressions with respect to the second lens group.
Abstract translation: 变焦镜头包括在变焦期间固定的正的第一透镜组，在变焦期间移动的负第二透镜组，在变焦期间移动的正的第三透镜组以校正由于变焦引起的图像平面变化，以及正的第四透镜组在 放大并在最物体侧包含一个停止点。 第二透镜组包括两个或更多个正透镜和一个或多个负透镜。 变焦透镜满足关于第二透镜组的预定条件表达式。
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公开(公告)号：US09069158B2
公开(公告)日：2015-06-30
申请号：US14173223
申请日：2014-02-05
Applicant: FUJIFILM Corporation
Inventor： Shinkichi Ikeda , Michio Cho
CPC classification number: G02B15/14 , G02B13/009 , G02B13/18 , G02B15/17 , G02B15/173
Abstract: A variable-magnification optical-system substantially consists of a first-lens-group having positive-refractive-power, a second-lens-group having negative-refractive-power, a third-lens-group having negative-refractive-power, a fourth-lens-group having negative-refractive-power, an aperture-stop, and a fifth-lens-group having positive-refractive-power in this order from an object-side along an optical-axis. The second-lens-group, third-lens-group and fourth-lens-group move when magnification is changed from a wide-angle-end to a telephoto-end. The first-lens-group substantially consists of a 1f-th lens-group having negative-refractive-power, a 1m-th lens-group having positive-refractive-power and a 1r-th lens-group substantially consisting of a 1r1-th lens having positive-refractive-power with its strong convex-surface facing the object-side, a biconvex 1r2-th lens and a convex meniscus 1r3-th lens with its convex-surface facing the object-side, and the 1r-th lens-group having positive-refractive-power as a whole in this order from the object-side. The 1f-th lens-group substantially consists of a concave meniscus-lens with its convex-surface facing the object-side and a negative-lens in this order from the object-side.
Abstract translation: 可变放大率光学系统基本上由具有正折光力的第一透镜组，具有负折光力的第二透镜组，具有负折光力的第三透镜组， 具有负折光力的第四透镜组，具有正光折射力的孔径光阑和第五透镜组，从物体侧沿着光轴依次具有正屈光力。 第二透镜组，第三透镜组和第四透镜组在从广角端变为长焦端时移动。 第一透镜组基本上由具有负折光力的1f透镜组，具有正折光力的第1m透镜组和第1透镜组基本上由1r1- 具有朝向物体侧的强凸面的正屈光力透镜，具有凸面朝向物侧的双凸面1r2透镜和凸弯月面1r3透镜，第1r 从物体侧起依次具有正折射力的透镜组。 第1f透镜组基本上由凹面弯曲透镜构成，其凸面朝向物体侧，负像透镜依次从物体侧开始。
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公开(公告)号：US08824062B2
公开(公告)日：2014-09-02
申请号：US13903316
申请日：2013-05-28
Applicant: FUJIFILM Corporation
Inventor： Toshihiro Aoi , Shinkichi Ikeda
Abstract: A zoom lens consists of positive first lens group, which is fixed during changing magnification, negative second lens group, which is moved during changing magnification, negative third lens group for correcting a fluctuation of an image plane caused by changing magnification, and positive fourth lens group, which is fixed during changing magnification, which are in this order from an object side. The first lens group consists of negative lens and positive lens group consisting of three or less positive lenses in this order from the object side. Each of the negative lens and at least one of the positive lens or lenses in the first lens group has at least an aspherical surface. A predetermined formula is satisfied.
Abstract translation: 变焦透镜由变倍倍率下固定的正第一透镜组，变倍放大期间移动的负第二透镜组，用于校正由变化倍率引起的像平面波动的负第三透镜组，以及正第四透镜 组，其在变化放大期间被固定，其从物体侧开始依次排列。 第一透镜组由从物体侧起依次由三个或更少的正透镜组成的负透镜和正透镜组组成。 第一透镜组中的负透镜和正透镜中的至少一个具有至少一个非球面。 满足规定的公式。
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公开(公告)号：US11947093B2
公开(公告)日：2024-04-02
申请号：US17351830
申请日：2021-06-18
Applicant: FUJIFILM Corporation
Inventor： Takuya Tanaka , Shinkichi Ikeda
CPC classification number: G02B15/20 , G02B15/1461
Abstract: The variable magnification optical system consists of a positive first lens group, an intermediate group, and a subsequent group in order from an object side to an image side, and does not form an intermediate real image in the entire zooming range. During zooming in a first zooming mode, a distance between the first lens group and the intermediate group changes, all distances between adjacent lens groups in the intermediate group change, a distance between the intermediate group and the subsequent group changes, and all distances between adjacent lens groups in the subsequent group are stationary. During zooming in the second zooming mode, all lens groups in the first lens group and the intermediate group are stationary, and all the distances of the adjacent lens groups in the subsequent group change. The zooming in the first zooming mode and the zooming in the second zooming mode can be independent.
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公开(公告)号：US11099364B2
公开(公告)日：2021-08-24
申请号：US16451698
申请日：2019-06-25
Applicant: FUJIFILM Corporation
Inventor： Shinkichi Ikeda , Takuya Tanaka
Abstract: A zoom lens consists of a positive first lens group that is fixed during zooming, a negative second lens group that moves during zooming, a positive third lens group that moves during zooming, a positive fourth lens group that moves during zooming, and a positive fifth lens group that is fixed during zooming. During zooming from a wide angle end to a telephoto end, the fourth lens group moves from an image side to an object side, the second lens group and a composite group consisting of the third lens group and the fourth lens group pass through points where respective lateral magnifications are −1 at the same time, the fifth lens group consists of a negative fifth A lens group that moves during anti-shake operation, and a positive fifth B lens group that is fixed during the anti-shake operation, and the lateral magnification of the fifth A lens group is negative.
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