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公开(公告)号：US20140111870A1
公开(公告)日：2014-04-24
申请号：US14138816
申请日：2013-12-23
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
IPC: G02B15/177
CPC classification number: G02B15/177 , G02B3/02 , G02B13/001 , G02B13/0045 , G02B13/009 , G02B13/04 , G02B13/18 , G02B15/14 , G02B15/161 , G02B15/20 , G02B15/22 , H04N5/23296
Abstract: A zoom lens includes: a first lens group having a negative power; and a second lens group having a refractive power, in this order from an object side. The zoom lens satisfies the following conditional formulae: 1.0
Abstract translation: 变焦透镜包括：具有负电力的第一透镜组; 以及具有屈光力的第二透镜组，从物体侧开始。 变焦透镜满足以下条件式：1.0
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公开(公告)号：US20230213743A1
公开(公告)日：2023-07-06
申请号：US18184511
申请日：2023-03-15
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
CPC classification number: G02B15/145523 , G02B13/02 , G02B13/009 , G02B27/0025
Abstract: A zoom lens includes a negative first lens group, a positive second lens group, and a subsequent lens group in order from an object side. A focusing lens group closer to an image side than the first lens group moves during focusing. The first lens group consists of a first-a lens group and a first-b lens group in order from the object side. Assuming that an average of refractive indices of the negative lenses of the first-a lens group is Nd1ave, a focal length of the focusing lens group is ff, and a focal length of the first lens group is f1, Conditional Expression (1) of 1.73
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公开(公告)号：US20220244512A1
公开(公告)日：2022-08-04
申请号：US17727040
申请日：2022-04-22
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA , Taiga NODA
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.
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公开(公告)号：US20210124157A1
公开(公告)日：2021-04-29
申请号：US17139202
申请日：2020-12-31
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
IPC: G02B15/163 , G02B15/177
Abstract: A zoom lens includes a negative first lens group, a positive second lens group, and a subsequent lens group in order from an object side. A focusing lens group closer to an image side than the first lens group moves during focusing. The first lens group consists of a first-a lens group and a first-b lens group in order from the object side. Assuming that an average of refractive indices of the negative lenses of the first-a lens group is Nd1ave, a focal length of the focusing lens group is ff, and a focal length of the first lens group is f1, Conditional Expression (1) of 1.73
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公开(公告)号：US20190306389A1
公开(公告)日：2019-10-03
申请号：US16356706
申请日：2019-03-18
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
Abstract: The lens device includes an imaging lens and a controller. The imaging lens includes a focusing lens group which moves during focusing and an aberration correction lens group having a refractive power lower than a refractive power of the focusing lens group having the lowest refractive power. The controller adjusts a position of the aberration correction lens group relative to the focusing lens group of which focus sensitivity is maximized according to a changed condition. A predetermined conditional expression related to the focus sensitivity of the focusing lens group is satisfied.
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Patent Agency Ranking
公开(公告)号：US20160274336A1
公开(公告)日：2016-09-22
申请号：US15067791
申请日：2016-03-11
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
Abstract: An imaging lens is constituted by, in order from the object side to the image side, a first lens group having a positive refractive power; a second lens group having a negative refractive power; and a third lens group having a positive refractive power. The second lens group has at least one positive lens and at least one negative lens. The second lens group moves along the optical axis from the object side to the image side while the first lens group and the third lens group are fixed with respect to an image formation plane to change focus from an object at infinity to an object at a proximal distance. Predetermined Conditional Formulae (1) and (2) are satisfied.
Abstract translation: 成像透镜从物体侧到像侧依次构成具有正屈光力的第一透镜组; 具有负屈光力的第二透镜组; 以及具有正屈光力的第三透镜组。 第二透镜组具有至少一个正透镜和至少一个负透镜。 第二透镜组沿着光轴从物体侧向像侧移动，而第一透镜组和第三透镜组相对于图像形成平面固定，以将焦点从无限远的物体改变为近端的物体 距离。 满足预定条件公式（1）和（2）。
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公开(公告)号：US20160062095A1
公开(公告)日：2016-03-03
申请号：US14813414
申请日：2015-07-30
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
CPC classification number: G02B27/646 , G02B15/173
Abstract: A four-group or five-group zoom lens consists of, in order from the object side, a positive first group being fixed during magnification change, a negative second group being moved during magnification change, one or two middle groups including a positive mp lens group being moved during magnification change, and a positive rearmost group being fixed during magnification change. 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 at least two positive lenses and at least one negative lens. Image stabilization is effected by shifting the middle group perpendicularly to the optical axis. The zoom lens satisfies given condition expressions.
Abstract translation: 四组或五组变焦镜头按照从物体侧起的顺序，在放大变化期间固定正的第一组，在放大变化期间移动负的第二组，包括正的mp透镜的一个或两个中间组 组在放大变化期间移动，并且在放大变化期间固定正最后组。 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。 前组包括至少两个正透镜和至少一个负透镜。 通过使中间组垂直于光轴移动来实现图像稳定。 变焦透镜满足给定条件表达式。
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公开(公告)号：US20160062090A1
公开(公告)日：2016-03-03
申请号：US14819812
申请日：2015-08-06
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
IPC: G02B15/14
CPC classification number: G02B15/14 , G02B15/173 , G02B27/0062 , G02B27/646
Abstract: A zoom lens consists 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 disposed at the most image-side position of the entire system. Zooming is effected by changing all distances between the adjacent groups. An A cemented lens formed by a positive lens and a negative lens which are cemented together in this order from the object side is disposed at the most object-side position of the second group, a B cemented lens formed by one positive lens and one negative lens is disposed on the image side of the A cemented lens and on the object side of the mp group, and a C cemented lens formed by one positive lens and one negative lens is disposed in the mp group. The zoom lens satisfies given condition expressions.
Abstract translation: 变焦透镜从物体侧依次包括正的第一组，负的第二组，包括正的mp组的一个或两个中间组以及设置在整个图像侧最靠近位置的正后方组 系统。 通过改变相邻组之间的所有距离来实现缩放。 由正物镜和负透镜形成的胶合透镜从物体侧按顺序粘合在一起设置在第二组的最物体侧位置，由一个正透镜和一个负像形成的B胶合透镜 透镜设置在A胶合透镜的图像侧和mp组的物体侧，并且在mp组中设置由一个正透镜和一个负透镜形成的C胶合透镜。 变焦透镜满足给定条件表达式。
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公开(公告)号：US20150185448A1
公开(公告)日：2015-07-02
申请号：US14645435
申请日：2015-03-12
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
IPC: G02B15/163 , G02B15/16
CPC classification number: G02B15/163 , G02B15/16 , G02B15/173 , G02B27/646
Abstract: A zoom lens consists of a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having negative refractive power, and a fifth lens group having positive refractive power in this order from an object side. Distances between the lens groups change during magnification change, and the first lens group is positioned closer to the object side in a telephoto end state than its position in a wide angle end state. Further, the first lens group consists of three lenses of an 11th lens having negative refractive power, a 12th lens having positive refractive power and a 13th lens having positive refractive power in this order from the object side. Further, the following conditional expressions are satisfied: 1.75
Abstract translation: 变焦透镜由具有正屈光力的第一透镜组，具有负屈光力的第二透镜组，具有正折光力的第三透镜组，具有负折光力的第四透镜组和具有正折光力的第五透镜组组成 从物体的这个顺序。 透镜组之间的距离在放大变化期间变化，并且在远摄端状态下，第一透镜组位于比广角端状态的位置更靠近物体侧。 此外，第一透镜组由具有负折光力的第十一透镜的三个透镜，具有正屈光力的第十二透镜和从物体侧起依次具有正折射光焦度的第十三透镜组成。 此外，满足以下条件表达式：1.75
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公开(公告)号：US20140307337A1
公开(公告)日：2014-10-16
申请号：US14314614
申请日：2014-06-25
Applicant: FUJIFILM CORPORATION
Inventor： Daiki KAWAMURA
IPC: G02B13/04
CPC classification number: G02B13/006 , G02B13/0045 , G02B13/04
Abstract: An imaging-lens substantially consists of a first-lens-group, a stop and a second-lens-group in this order from object-side. The first-lens-group substantially consists of three or less lenses including a negative-lens having meniscus-shape with convex-surface facing object-side and a positive-lens cemented on the negative-lens in this order from object-side. The second-lens-group substantially consists of a 21st-lens-group substantially consisting of a 21-1st-lens and a 21-2nd-lens and a 22nd-lens-group substantially consisting of a positive-lens. The 21-1st-lens is a positive-lens, an image-side-lens-surface of which has convex-shape facing image-side, and the absolute-value of a curvature-radius of the image-side-lens-surface of which is less than the absolute-value of a curvature-radius of an object-side-lens-surface thereof. The 21-2nd-lens is a negative-lens, an object-side-lens-surface of which has concave-shape facing object-side, and the absolute-value of a curvature-radius of the object-side-lens-surface of which is less than the absolute-value of a curvature-radius of an image-side-lens-surface thereof. A conditional-formula about optical-total-length and maximum-image-height is 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，包括具有面向物体侧的凸面的弯月面形状的负透镜和从物体侧按顺序胶合在负透镜上的正透镜。 第二透镜组基本上由基本上由正面透镜组成的21-1透镜和21-2透镜和第22透镜组构成的第21透镜组组成。 21-1透镜是正透镜，其图像侧透镜表面具有面向图像侧的凸面形状，并且图像侧透镜表面的曲率半径的绝对值 小于其物镜侧透镜表面的曲率半径的绝对值。 第21-2透镜是负透镜，物镜侧透镜表面具有面向物体侧的凹面形状，物体侧透镜表面的曲率半径的绝对值 其小于其图像侧透镜表面的曲率半径的绝对值。 满足关于光学全长和最大像高的条件式。
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