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公开(公告)号：US20140111869A1
公开(公告)日：2014-04-24
申请号：US14139252
申请日：2013-12-23
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
IPC: G02B13/04
CPC classification number: G02B13/04 , G02B15/177 , G02B27/646
Abstract: A zoom lens includes: a first lens group having a negative power; and a second lens group having a positive power, in this order from an object side. The first lens group includes a first lens having a negative power and a second lens having a positive power. The zoom lens satisfies conditional formulae 1.6
Abstract translation: 变焦镜头包括：具有负功率的第一透镜组; 以及从物体侧起依次具有正电力的第二透镜组。 第一透镜组包括具有负光焦度的第一透镜和具有正光焦度的第二透镜。 变焦透镜满足条件式1.6 <| f1 | / fw <2.5（1）; 1.6
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公开(公告)号：US20140092485A1
公开(公告)日：2014-04-03
申请号：US14100036
申请日：2013-12-09
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
IPC: G02B15/177 , G02B13/00
CPC classification number: G02B15/177 , G02B13/009 , G02B15/14 , G02B15/16
Abstract: A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. The first lens group includes a first lens having a negative refractive power and a second lens, which is plastic, having a positive refractive power. The zoom lens satisfies the following conditional formulae, when Nd1n is the refractive index of the first lens with respect to the d line, Nd1p and νd1p are the refractive index and the Abbe's number of the second lens with respect to the d line, respectively, d2 is the spatial distance between the first lens and the second lens along an optical axis, and fw is the focal length of the entire system at the wide angle end: 1.48
Abstract translation: 变焦透镜包括：具有负屈光力的第一透镜组; 以及具有正屈光力的第二透镜组，从物体侧依次设置。 第一透镜组包括具有负屈光力的第一透镜和具有正折光力的塑料的第二透镜。 当Nd1n是第一透镜相对于d线的折射率时，变焦透镜满足以下条件式，Nd1p和＆ngr; d1p是第二透镜相对于d线的折射率和阿贝数， d2分别为沿着光轴的第一透镜与第二透镜之间的空间距离，fw为广角端整个系统的焦距：1.48
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公开(公告)号：US20230393376A1
公开(公告)日：2023-12-07
申请号：US18450713
申请日：2023-08-16
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA , Taiga NODA
CPC classification number: G02B15/145121 , H04N23/55 , G02B9/60
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：US20230052715A1
公开(公告)日：2023-02-16
申请号：US17813244
申请日：2022-07-18
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA , Tetsuya ORI
IPC: G02B15/14 , G02B15/167
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 negative refractive power, a middle group that includes one or more lens groups, and a final lens group. The middle group has a positive refractive power as a whole throughout an entire zoom range. During zooming, a spacing between the first lens group and the second lens group changes, a spacing between the second lens group and the middle group changes, and a spacing between the middle group and the final lens group changes. The zoom lens satisfies predetermined conditional expressions.
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公开(公告)号：US20230013899A1
公开(公告)日：2023-01-19
申请号：US17929979
申请日：2022-09-06
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA
IPC: G02B15/163 , G02B15/177 , G02B27/00 , G02B9/34 , G02B15/20 , G02B9/62 , G02B13/04 , G02B15/14 , G02B13/00 , G02B5/00 , G02B9/60 , G02B13/18
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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Patent Agency Ranking
公开(公告)号：US20220035143A1
公开(公告)日：2022-02-03
申请号：US17490843
申请日：2021-09-30
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：US20210341709A1
公开(公告)日：2021-11-04
申请号：US17377480
申请日：2021-07-16
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA , Michio CHO
Abstract: An imaging lens includes, successively in order from a position closest to an object side, a positive first lens group that does not move during focusing, a stop, and a positive second lens group that moves during focusing. The second lens group consists of all lenses that integrally move during focusing. The imaging lens satisfies predetermined conditional expressions.
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公开(公告)号：US20210231927A1
公开(公告)日：2021-07-29
申请号：US17155283
申请日：2021-01-22
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA , Michio CHO
Abstract: An imaging lens includes a positive first lens group and a second lens group, which are continuous in order from the position closest to the object side, as lens groups. During focusing, the distance between the first lens group and the second lens group changes. A stop is disposed closer to the image side than a lens which is second from the object side. A combined refractive power of all lenses closer to the object side than the stop is positive. The imaging lens includes an LA positive lens and an LB positive lens that satisfy a predetermined conditional expression at a position closer to the object side than the stop. An Abbe number of the LB positive lens is the maximum among Abbe numbers of all positive lenses closer to the object side than the stop.
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公开(公告)号：US20200249430A1
公开(公告)日：2020-08-06
申请号：US16774839
申请日：2020-01-28
Applicant: FUJIFILM Corporation
Inventor： Daiki KAWAMURA , Michio CHO
Abstract: The imaging lens comprises, successively in order from the object side, a positive first lens group that does not move during focusing, a second lens group that moves during focusing, a stop, and a positive third lens group that consists of all lenses moving integrally with the second lens group during focusing. The composite focal length of the second lens group and the third lens group is positive. The first lens group includes four or more positive lenses and three or more negative lenses. The imaging lens satisfies predetermined conditional expressions.
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公开(公告)号：US20190302431A1
公开(公告)日：2019-10-03
申请号：US16355942
申请日：2019-03-18
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 fl, Conditional Expression (1) of 1.73
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