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公开(公告)号：US08896927B2
公开(公告)日：2014-11-25
申请号：US14162242
申请日：2014-01-23
Applicant: FUJIFILM Corporation
Inventor： Hiroki Saito , Michio Cho
CPC classification number: G03B13/02 , G02B23/145 , G03B13/06 , G03B13/10 , G03B23/00
Abstract: A real-image variable-magnification viewfinder substantially consists of, in order from the object side: an objective lens system substantially consisting of a positive first lens, a negative second lens, a positive third lens, and a positive fourth lens; an erect optical system formed by a plurality of optical members; and a positive eyepiece lens system. The first lens and the third lens are fixed relative to the optical axis direction during magnification change, and the second lens and the fourth lens are moved in the optical axis direction during magnification change. All optical surfaces of all the optical members forming the erect optical system are planar surfaces. At least one of the optical members forming the erect optical system is made of a glass material. A predetermined conditional expression is satisfied.
Abstract translation: 实像可变倍率取景器基本上由物体侧依次组成：物镜系统，其基本上由正的第一透镜，负的第二透镜，正的第三透镜和正的第四透镜组成; 由多个光学构件形成的直立光学系统; 和正目镜系统。 第一透镜和第三透镜在放大变化期间相对于光轴方向固定，并且第二透镜和第四透镜在放大变化期间沿光轴方向移动。 形成直立光学系统的所有光学部件的所有光学表面均为平面。 形成直立光学系统的至少一个光学部件由玻璃材料制成。 满足预定的条件表达式。
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公开(公告)号：US08824058B2
公开(公告)日：2014-09-02
申请号：US14192028
申请日：2014-02-27
Applicant: FUJIFILM Corporation
Inventor： Hiroki Saito , Michio Cho , Toru Ito
IPC: G02B15/14
CPC classification number: G02B15/177 , G02B13/009 , G02B27/646
Abstract: In a zoom lens in which a first lens group having a negative refractive power and a second lens group having a positive refractive power are disposed in order from the object side and zooming is performed by moving the first lens group and the second lens group, the first lens group is formed of a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, disposed in order from the object side. Then, when the focal length of the first lens group is taken as f1 and the focal length of the second lens group is taken as f2, the zoom lens is configured to satisfy a conditional expression give below: 0.00
Abstract translation: 在具有负屈光力的第一透镜组和具有正折光力的第二透镜组的变焦透镜中，从物体侧依次布置并且通过移动第一透镜组和第二透镜组来执行变焦， 第一透镜组由具有负屈光力的第一透镜，具有正屈光力的第二透镜，具有负折射光焦度的第三透镜和具有正折射光焦度的第四透镜形成，从物侧 。 然后，当将第一透镜组的焦距作为f1，将第二透镜组的焦距设为f2时，变焦透镜被配置为满足以下条件表达式：0.00 <| f1 / f2 | < 1.04（1-4）。
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公开(公告)号：US10126534B2
公开(公告)日：2018-11-13
申请号：US15421501
申请日：2017-02-01
Applicant: FUJIFILM Corporation
Inventor： Taiga Noda , Michio Cho
Abstract: An imaging lens is constituted by, in order from the object side to the image side: a first lens group; a stop; and a second lens group having a positive refractive power. The first lens group is constituted by, in order from the object side to the image side: a 1-1 negative meniscus lens having a concave surface toward the image side; a 1-2 negative meniscus lens having a concave surface toward the image side; a 1-3 biconcave lens; and a 1-4 positive lens. The second lens group is constituted by, in order from the object side to the image side: a 2A lens group having a positive refractive power; and a 2B lens group having a positive refractive power as a whole, constituted by a 2B-1 positive lens, a 2B-2 negative lens, and a 2B-3 positive lens. Predetermined conditional formulae are satisfied.
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公开(公告)号：US09746650B2
公开(公告)日：2017-08-29
申请号：US14953098
申请日：2015-11-27
Applicant: FUJIFILM Corporation
Inventor： Taiga Noda , Ryoko Tomioka , Michio Cho
IPC: G02B15/173 , G02B15/14 , G02B15/20 , G02B15/163 , G02B27/64
CPC classification number: G02B15/173 , G02B15/14 , G02B15/163 , G02B15/20 , G02B27/646
Abstract: A zoom lens is constituted by, in order from the object side: a positive first lens group; a negative second lens group; a positive third lens group; a negative fourth lens group; and a positive fifth lens group. The distance between the first and second lens groups constantly increases, the distance between the second and third lens groups constantly decreases, the distance between the third and fourth lens groups constantly changes, and the distance between the fourth and fifth lens groups constantly increases when changing magnification from the wide angle end to the telephoto end. The first lens group is constituted by three lenses, which are negative, positive, and positive in order from the object side. The second lens group is constituted by five lenses, which are negative, negative, positive, positive, and negative in order from the object side. The fifth lens group is constituted by a single lens component.
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公开(公告)号：US09746649B2
公开(公告)日：2017-08-29
申请号：US14953088
申请日：2015-11-27
Applicant: FUJIFILM Corporation
Inventor： Taiga Noda , Michio Cho
IPC: G02B15/173 , G02B15/14 , G02B15/20 , G02B15/163 , G02B27/64
CPC classification number: G02B15/173 , G02B15/14 , G02B15/163 , G02B15/20 , G02B27/646
Abstract: A zoom lens includes, in order from the object side: a positive first lens group; a negative second lens group; a positive third lens group; a negative fourth lens group; and a positive fifth lens group. The distance between the first and second lens groups constantly increases, the distance between the second and third lens groups constantly decreases, the distance between the third and fourth lens groups constantly changes, and the distance between the fourth and fifth lens groups constantly increases when changing magnification from the wide angle to the telephoto end. The first lens group includes three lenses. The second lens group includes four lenses. The third lens group includes six lenses and an aperture stop. The fifth lens group includes a single lens component.
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Patent Agency Ranking
公开(公告)号：US09638891B2
公开(公告)日：2017-05-02
申请号：US14855965
申请日：2015-09-16
Applicant: FUJIFILM Corporation
Inventor： Ukyo Tomioka , Michio Cho , Takashi Kunugise
CPC classification number: G02B9/64 , G02B15/161
Abstract: An imaging lens consists of, in order from the object side, a front group, a stop, and a rear group, wherein the front group includes, in order from the most-object side, a positive first lens, a negative second lens, a negative third lens which are adjacently disposed, and further includes a final lens of the front group adjacent to the stop, with the surface toward the stop being convex toward the image side, the rear group includes, in order from the image side, two sets of cemented lenses having positive refractive powers, which are adjacently disposed, the object-side cemented lens of the two sets of cemented lenses is formed by cementing a positive lens and a negative meniscus lens together, and the image-side cemented lens is formed by cementing a negative meniscus lens and a positive lens together.
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公开(公告)号：US09612426B2
公开(公告)日：2017-04-04
申请号：US14625056
申请日：2015-02-18
Applicant: FUJIFILM Corporation
Inventor： Hideo Kanda , Tomoyuki Baba , Takashi Suzuki , Michio Cho
CPC classification number: G02B15/161 , G02B9/64 , G02B13/16
Abstract: An imaging lens consists of a front group having positive refractive power as a whole and a rear group in this order from an object side. The front group consists of three positive lenses, a negative lens with its concave surface facing an image side, a positive lens with its convex surface facing the object side, a negative lens with its concave surface facing the image side, a stop, a negative lens with its concave surface facing the object side and plural positive lenses in this order from the object side. The rear group has positive refractive power and consists of a positive lens and a negative lens in this order from the object side.
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公开(公告)号：US09575290B2
公开(公告)日：2017-02-21
申请号：US14856585
申请日：2015-09-17
Applicant: FUJIFILM Corporation
Inventor： Masato Kondo , Takayuki Noda , Tatsuyuki Ogino , Michio Cho
CPC classification number: G02B13/0045 , G02B5/005 , G02B9/60 , G02B13/002 , G02B13/18 , G02B27/0025
Abstract: An imaging lens is constituted of five lenses, including, in order from the object side to the image side: a first lens having a positive refractive power, which is of a meniscus shape having a convex surface toward the object side; a second lens having a negative refractive power and a concave surface toward the image side; a third lens having a positive refractive power, which is of a meniscus shape having a convex surface toward the object side; a fourth lens having a negative refractive power; and a fifth lens having a negative refractive power and at least one inflection point on the surface thereof toward the image side. Predetermined conditional formulae are satisfied.
Abstract translation: 成像透镜由五个透镜构成，包括从物体侧到像侧的顺序：具有正折射光焦度的第一透镜，其具有朝向物体侧的凸面的弯月形状; 具有负折射力的第二透镜和朝向图像侧的凹面; 具有正折射力的第三透镜，其具有朝向物体侧的凸表面的弯月形状; 具有负屈光力的第四透镜; 以及具有负屈光力的第五透镜和其表面上的至少一个拐点朝向像侧。 满足预定条件公式。
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公开(公告)号：US09535239B2
公开(公告)日：2017-01-03
申请号：US14753790
申请日：2015-06-29
Applicant: FUJIFILM Corporation
Inventor： Daiki Komatsu , Michio Cho
CPC classification number: G02B15/14 , G02B13/18 , G02B15/17 , G02B15/20 , G02B27/1013
Abstract: A zoom lens consists of, in order from the object side, a positive first lens group, a negative second lens group, a negative third lens group, a negative fourth lens group, a positive fifth lens group, and a positive sixth lens group. The first lens group and the sixth lens group are fixed with respect to an image plane, and a distance between the first lens group and the second lens group increases, a distance between the second lens group and the third lens group changes, and a distance between the third lens group and the fourth lens group changes, and a distance between the fourth lens group and the fifth lens group changes, and a distance between the fifth lens group and the sixth lens group changes during magnification change from a wide angle end to a telephoto end.
Abstract translation: 变焦透镜从物体侧依次包括正的第一透镜组，负的第二透镜组，负的第三透镜组，负的第四透镜组，正的第五透镜组和正的第六透镜组。 第一透镜组和第六透镜组相对于图像平面固定，并且第一透镜组和第二透镜组之间的距离增加，第二透镜组和第三透镜组之间的距离改变，并且距离 在第三透镜组和第四透镜组之间变化，并且第四透镜组和第五透镜组之间的距离改变，并且第五透镜组和第六透镜组之间的距离在从广角端到 长焦端。
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公开(公告)号：US09453987B2
公开(公告)日：2016-09-27
申请号：US14219697
申请日：2014-03-19
Applicant: FUJIFILM Corporation
Inventor： Takayuki Noda , Michio Cho
CPC classification number: G02B13/0045 , G02B9/60
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 convex toward the object side, a second lens that has a negative refractive power and has a meniscus shape which is concave toward an image side, a third lens that has a meniscus shape which is convex toward the image side, a fourth lens that has a positive refractive power, and a fifth lens that has a negative refractive power and has at least one inflection point on an image side surface. Further, the imaging lens satisfies predetermined conditional expressions.
Abstract translation: 成像透镜基本上由物体侧依次包括具有正折光力并具有向物体侧凸出的弯月形状的第一透镜的五个透镜，具有负屈光力并具有负屈光力的第二透镜 朝向图像侧凹陷的弯月形状，具有朝向像侧凸起的弯月面形状的第三透镜，具有正折光力的第四透镜和具有负折射光焦度的第五透镜， 图像侧表面上的至少一个拐点。 此外，成像透镜满足预定条件表达式。
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