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公开(公告)号：US10444479B2
公开(公告)日：2019-10-15
申请号：US15854280
申请日：2017-12-26
Applicant: FUJIFILM Corporation
Inventor： Takuya Tanaka , Masaru Yonezawa
IPC: G02B13/02 , G02B15/14 , G02B13/06 , G02B15/163 , G02B15/24
Abstract: The zoom lens consists of, in order from an object side: a first lens group that has a positive refractive power; a second lens group that has a positive refractive power; a third lens group that has a negative refractive power; a fourth lens group; and a fifth lens group that has a positive refractive power. The first lens group and the fifth lens group remain stationary with respect to an image plane during zooming. The second lens group, the third lens group, and the fourth lens group are moved by changing distances between the lens groups and adjacent groups in a direction of an optical axis during zooming, and are positioned to be closer to the image side at a telephoto end than at a wide-angle end. Conditional Expression (1) is satisfied. 0.8
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公开(公告)号：US09207436B2
公开(公告)日：2015-12-08
申请号：US14184140
申请日：2014-02-19
Applicant: FUJIFILM Corporation
Inventor： Masato Kondo , Takuya Tanaka , Kazumi Koike
CPC classification number: G02B13/18 , G02B13/0045
Abstract: An imaging lens substantially consists of, in order from an object side, five lenses of a first lens that has a positive refractive power and has a meniscus shape which is concave toward an image side, a second lens that has a negative refractive power and has a meniscus shape which is concave toward the image side, a third lens that has a biconcave shape, a fourth lens that has a positive refractive power and has a meniscus shape which is convex toward the image side, and a fifth lens that has a biconcave shape and has an aspheric shape which has at least one extreme point on an image side surface. Further, the imaging lens satisfies a predetermined conditional expression.
Abstract translation: 成像透镜基本上由物体侧依次包括具有正折光力并且具有朝向像侧凹入的弯月形状的第一透镜的五个透镜，具有负折光力并具有负折射光焦度的第二透镜 朝向图像侧凹陷的弯月形状，具有双凹形状的第三透镜，具有正折光力并具有向图像侧凸出的弯月形状的第四透镜，以及具有双凸形的第五透镜 并且具有在像侧表面上具有至少一个极限点的非球面形状。 此外，成像透镜满足预定条件表达式。
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公开(公告)号：US12292554B2
公开(公告)日：2025-05-06
申请号：US17748443
申请日：2022-05-19
Applicant: FUJIFILM Corporation
Inventor： Daiki Komatsu , Masanao Kawana , Motoari Ota , Takuya Tanaka
Abstract: The zoom lens consists of, in order from the object side, a first lens group that has a positive refractive power, a second lens group that has a positive refractive power, and a subsequent group. During zooming, a spacing between the first lens group and the second lens group changes, and a spacing between the second lens group and the subsequent group changes. The subsequent groups include a focusing group that moves during focusing.
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公开(公告)号：US11988821B2
公开(公告)日：2024-05-21
申请号：US17355254
申请日：2021-06-23
Applicant: FUJIFILM Corporation
Inventor： Yasutaka Shimada , Takuya Tanaka , Takashi Kunugise
CPC classification number: G02B15/145129 , G02B13/009 , G02B13/18 , G02B15/20
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：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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Patent Agency Ranking
公开(公告)号：US11125986B2
公开(公告)日：2021-09-21
申请号：US16828622
申请日：2020-03-24
Applicant: FUJIFILM Corporation
Inventor： Takuya Tanaka , Takuya Tanaka
IPC: G02B15/14 , G02B15/173
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 fourth lens group includes a plurality of positive lenses and a negative lens disposed on a most-image-side. Assuming that an average value of Abbe numbers in positive lenses within the fourth lens group is vdp and an Abbe number of a negative lens disposed on a most-image-side of the fourth lens group is vdn, the zoom lens satisfies a conditional expression: 0
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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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公开(公告)号：US10746976B2
公开(公告)日：2020-08-18
申请号：US16142024
申请日：2018-09-26
Applicant: FUJIFILM Corporation
Inventor： Motoari Ota , Takuya Tanaka
IPC: G02B15/163 , G02B13/18 , G02B15/20 , G02B15/167 , G02B15/14 , G02B13/02
Abstract: A zoom lens consists of, in order from an object side, a positive first lens group fixed relative to the image surface during zooming, at least two movable lens groups including a negative second lens group being adjacent to the first lens group, the at least two movable lens groups being movable by changing a distance in an optical-axis direction to an adjacent group during zooming; and a final lens group arranged on the most image side and fixed relative to the image surface during zooming. The first lens group has, continuously in order from the most object side, a first negative lens having a concave surface facing an image side, a second negative lens, and a third positive lens. A predetermined conditional expression relating to the first lens group is satisfied.
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公开(公告)号：US10365454B2
公开(公告)日：2019-07-30
申请号：US15879460
申请日：2018-01-25
Applicant: FUJIFILM Corporation
Inventor： Takuya Tanaka , Shinkichi Ikeda
IPC: G02B9/60 , G02B13/02 , G02B15/14 , G02B15/173
Abstract: The zoom lens consists of, in order from an object side: a first lens group that remains stationary during zooming and has a positive refractive power; at least two movable lens groups that are moved during zooming; and a final lens group that remains stationary during zooming and has a positive refractive power. The final lens group consists of, in order from the object side, a front group and a rear group. The front group has, successively in order from a position closest to the object side, two or less positive lenses and one first front group negative lens, and a second front group negative lens that is different from the first front group negative lens at a position closest to an image side and is concave toward the image side. An aperture stop is provided between the movable lens group and the first front group negative lens. The rear group consists of a positive lens and a rear group negative meniscus lens that is convex toward the image side. In addition, the zoom lens satisfies predetermined conditional expressions.
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公开(公告)号：US10146032B2
公开(公告)日：2018-12-04
申请号：US15843263
申请日：2017-12-15
Applicant: FUJIFILM Corporation
Inventor： Masaru Yonezawa , Takuya Tanaka
IPC: G02B15/20 , G02B7/02 , G02B27/00 , G02B7/04 , G02B15/163
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 plurality of movable lens groups that move during zooming, and a final lens group that has a positive refractive power and remains stationary during zooming. The final lens group has two or more positive ED lenses formed of a material satisfying predetermined conditional expressions. The predetermined conditional expressions, which relate to extraordinary low dispersion and temperature coefficients of the refractive indices of the positive lenses in the movable lens group closest to the image side and the final lens group, are satisfied.
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