公开(公告)号：US20250130411A1

公开(公告)日：2025-04-24

申请号：US19000961

申请日：2024-12-24

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA ,  Taiga NODA

IPC: G02B15/14 ,  G02B9/60 ,  H04N23/55

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.

公开(公告)号：US20180164540A1

公开(公告)日：2018-06-14

申请号：US15822592

申请日：2017-11-27

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA ,  Tetsuya ORI

IPC: G02B7/10 ,  G02B27/64 ,  G02B9/64

CPC classification number: G02B7/10 ,  G02B9/64 ,  G02B15/163 ,  G02B15/17 ,  G02B27/646

Abstract: The imaging lens consists of, in order from the object side, a first lens group having a positive refractive power, a second lens group, and a third lens group. In the second lens group, a first focus lens group having a negative refractive power is disposed to be closest to the object side, and a second focus lens group having a positive refractive power is disposed to be closest to the image side. During focusing, only the first and second focus lens groups move by changing the mutual spacing therebetween. The first lens group has two positive lenses and one negative lens. The first focus lens group consists of two or less lenses including a negative lens. Predetermined conditional expressions are satisfied.

公开(公告)号：US20160274335A1

公开(公告)日：2016-09-22

申请号：US15064123

申请日：2016-03-08

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B13/02 ,  G02B13/00 ,  G02B27/00 ,  G02B9/64

CPC classification number: G02B13/02 ,  G02B9/64

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. An aperture stop is positioned at the object side of the second lens group. The first lens group has at least two positive lenses and at least one negative lens. The second lens group is constituted by one positive lens and one negative lens. The third lens group has at least two positive lenses and at least two negative lenses that include at least one cemented lens. Focusing operations are performed by only the second lens group moving.

Abstract translation: 成像透镜从物体侧到像侧依次由具有正折光力的第一透镜组构成; 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。 孔径光阑位于第二透镜组的物体侧。 第一透镜组具有至少两个正透镜和至少一个负透镜。 第二透镜组由一个正透镜和一个负透镜构成。 第三透镜组具有至少两个正透镜和至少两个包括至少一个胶合透镜的负透镜。 聚焦操作仅由第二透镜组移动进行。

公开(公告)号：US20150268452A1

公开(公告)日：2015-09-24

申请号：US14726871

申请日：2015-06-01

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B13/00 ,  H04N5/225

CPC classification number: G02B13/0015 ,  G02B9/60 ,  G02B13/0045 ,  H04N5/225

Abstract: An imaging lens substantially consists of a first lens-group, a stop and a second lens-group in this order from an object-side. The first lens-group substantially consists of three or less lenses including at least one negative lens and a positive lens. The second lens-group substantially consists of a 21st lens-group and a 22nd lens-group in this order from the object-side. The 21st lens-group substantially consists of three or less lenses and has positive refractive-power. The 22nd lens-group substantially consists of two lenses of a negative lens and a positive lens in this order from the object-side. Predetermined conditional formulas about distance on an optical-axis from a most-object-side lens surface in an entire system to an image-plane, maximum image height, distance on the optical-axis from a most-object-side lens surface in the first lens-group to a most-image-side lens surface in the second lens-group, and focal-length of the entire system are 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，包括至少一个负透镜和正透镜。 第二透镜组从物体侧起依次由第21透镜组和第22透镜组构成。 第21透镜组基本上由三个或更少的透镜组成并具有正的折光力。 第22透镜组从物体侧开始依次由负透镜和正透镜的两个透镜组成。 关于从整个系统中的最物体侧透镜表面到像平面的光轴上的距离的预定条件公式，最大图像高度，来自最主体侧透镜表面的光轴上的距离 第一透镜组到第二透镜组中的最图像侧透镜表面，并且满足整个系统的焦距。

公开(公告)号：US20140368925A1

公开(公告)日：2014-12-18

申请号：US14301924

申请日：2014-06-11

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B13/00

CPC classification number: G02B15/173 ,  G02B27/646 ,  G03B2205/0015

Abstract: A zoom lens includes a positive first lens group, a negative second lens group, a positive third lens group, and a fourth lens group. The first through third lens groups move such that the distance between the first and second lens groups is greater while the distance between the second lens group and the third lens group is less at the telephoto end compared to the wide angle end, and the fourth lens moves with the third lens group. The third lens group includes a fixed positive subgroup, including at least one positive lens and one negative lens, and a movable subgroup provided toward an image side of the fixed lens group including one negative lens that moves perpendicular to an optical axis to correct an image plane when camera shake occurs. The fourth lens group includes a fixed subgroup and a movable subgroup that moves during focusing operations.

Abstract translation: 变焦透镜包括正的第一透镜组，负的第二透镜组，正的第三透镜组和第四透镜组。 第一至第三透镜组移动，使得第一透镜组和第二透镜组之间的距离较大，而与广角端相比，第二透镜组与第三透镜组之间的距离在望远端较小，第四透镜 与第三个镜头组一起移动。 第三透镜组包括固定的正子组，其包括至少一个正透镜和一个负透镜，以及朝向固定透镜组的像侧设置的可移动子组，包括垂直于光轴移动的一个负透镜以校正图像 飞机发生相机晃动时。 第四透镜组包括在聚焦操作期间移动的固定子组和可移动子组。

公开(公告)号：US20250035898A1

公开(公告)日：2025-01-30

申请号：US18781991

申请日：2024-07-23

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA ,  Hiroki SAITO ,  Ryoko TOMIOKA ,  Daiki KOMATSU

IPC: G02B15/14 ,  G02B13/00

Abstract: A zoom lens consists of, in order from an object side to an image side: an object side positive group which has a positive refractive power; an object side negative group which has a negative refractive power; an intermediate group; and a final group. The object side positive group, the object side negative group, the intermediate group, and the final group each include at least one lens group. All spacings between adjacent lens groups change, and all mutual spacings between lenses in each lens group do not change during zooming. All lenses in the object side positive group and all lenses in the intermediate group remain stationary with respect to an image plane during focusing. The zoom lens satisfies predetermined conditional expressions.

公开(公告)号：US20240103256A1

公开(公告)日：2024-03-28

申请号：US18498290

申请日：2023-10-31

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA ,  Michio CHO

IPC: G02B15/14 ,  G02B15/20 ,  G02B27/00

CPC classification number: G02B15/1421 ,  G02B15/20 ,  G02B27/0025

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.

公开(公告)号：US20240077707A1

公开(公告)日：2024-03-07

申请号：US18496189

申请日：2023-10-27

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA ,  Michio CHO

IPC: G02B15/14 ,  G02B15/20 ,  G02B27/00

CPC classification number: G02B15/1421 ,  G02B15/20 ,  G02B27/0025

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.

公开(公告)号：US20190302433A1

公开(公告)日：2019-10-03

申请号：US16355516

申请日：2019-03-15

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B15/20 ,  G02B27/00

Abstract: The lens device includes a zoom lens and a controller. 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 are disposed within the zoom lens. The controller adjusts a position of the aberration correction lens group relative to the focusing lens group of which focus sensitivity is maximized for each zoom position according to the changed condition.

公开(公告)号：US20140307333A1

公开(公告)日：2014-10-16

申请号：US14317850

申请日：2014-06-27

Applicant: FUJIFILM Corporation

Inventor： Daiki KAWAMURA

IPC: G02B13/00

CPC classification number: G02B13/002 ,  G02B13/0015 ,  G02B13/0045

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 arranged closest to object-side and a positive-lens arranged on image-side of the negative-lens. The first-lens-group includes a negative-lens having a meniscus-shape with its 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 five or less lenses including a cemented-lens of two lenses of a positive-lens and a negative-lens and a single-lens having positive-refractive-power, and which is arranged on image-side of the cemented-lens. Conditional-formulas about a refractive-index and an Abbe-number of the negative-lens arranged closest to the object-side in the first-lens-group for d-line, Abbe-numbers of the positive-lens and the negative-lens constituting the cemented-lens in the second-lens-group for d-line, and a refractive-index of the single-lens constituting the second-lens-group for d-line are 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，包括最靠近物体侧设置的负透镜和布置在负透镜的像侧上的正透镜。 第一透镜组包括具有面向物体侧的凸面的弯月形状的正透镜和从物体侧依次从负透镜胶合的正透镜。 第二透镜组基本上由五个或更少的透镜组成，包括正透镜和负透镜的两个透镜的胶合透镜和具有正折射光焦度的单透镜， 胶合透镜的一侧。 关于d线的第一透镜组中最靠近物体侧的折射率的折射率和阿贝数的条件式，正透镜和负透镜的阿贝数 在d线的第二透镜组中构成胶合透镜，并且满足构成d线的第二透镜组的单透镜的折射率。