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公开(公告)号：US09664884B2
公开(公告)日：2017-05-30
申请号：US14824473
申请日：2015-08-12
Applicant: FUJIFILM Corporation
Inventor： Akiko Nagahara , Michio Cho
IPC: G02B13/16 , G02B13/04 , G02B15/177 , G02B15/14 , G02B15/163 , G02B15/24
CPC classification number: G02B13/16 , G02B13/04 , G02B15/14 , G02B15/163 , G02B15/177 , G02B15/24
Abstract: A projection zoom lens is essentially constituted by, in order from the magnification side: a negative first lens group; a positive second lens group; a third lens group; a positive fourth lens group; a fifth lens group; and a positive sixth lens group. The distance between the first and second lens groups is shorter, the distance between the second and third lens groups is longer, the distance between the third and fourth lens groups is shorter, the distance between the fourth and the fifth lens groups is longer, and the distance between the fifth and sixth lens groups is longer at the telephoto end than at the wide angle end. A lens having a negative refractive power in the paraxial region is provided most toward the magnification side in the first lens group. The fifth lens group has a negative lens.
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公开(公告)号：US09651761B2
公开(公告)日：2017-05-16
申请号：US14690901
申请日：2015-04-20
Applicant: FUJIFILM Corporation
Inventor： Tetsuya Ori , Michio Cho
CPC classification number: G02B15/17 , G02B15/14 , G02B27/64 , G02B27/646
Abstract: A five-group zoom lens including, in order from the object side, positive, negative, negative, positive, and positive groups. The first group includes a negative meniscus lens with the concave surface toward the image side, a positive lens and a positive lens. The second group includes a negative lens with the image-side surface having an absolute value of curvature radius smaller than that of the object side surface, a biconcave lens, and a biconvex lens. The third group includes a negative lens with the object side surface having an absolute value of curvature radius smaller than that of the image-side surface, and is moved during focusing on a closer object. The fifth group includes a positive fifth-A group including a biconvex lens, and a negative fifth-B group including a biconcave lens and a biconvex lens, wherein condition expression (1) is satisfied: −4
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公开(公告)号：US09494770B2
公开(公告)日：2016-11-15
申请号：US14627149
申请日：2015-02-20
Applicant: FUJIFILM CORPORATION
Inventor： Ping Sun , Katsuhisa Tsutsumi , Michio Cho
CPC classification number: G02B13/04 , G02B9/04 , G02B9/62 , G02B9/64 , G02B13/0045
Abstract: An imaging lens consists of a front group and a rear group. The front group is composed of a lens having a negative meniscus shape with a convex surface on the object side, a negative lens, a negative lens, and a positive lens in order from the object side. The rear group is composed of a positive lens, a negative lens, a positive lens, and a positive lens in order from the object side. The imaging lens satisfies given conditional expressions.
Abstract translation: 成像镜头由前组和后组组成。 前组由物体侧依次具有负弯月面形状，物侧的凸面，负透镜，负透镜，正透镜的透镜构成。 后组由正面透镜，负透镜，正透镜和正透镜组成，从物体侧开始。 成像透镜满足给定的条件表达式。
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公开(公告)号：US09423595B2
公开(公告)日：2016-08-23
申请号：US14604010
申请日：2015-01-23
Applicant: FUJIFILM Corporation
Inventor： Yoshikazu Shinohara , Michio Cho
CPC classification number: G02B13/0045 , G02B9/64
Abstract: An imaging lens is essentially constituted by seven lenses, including: a positive first lens having a convex surface toward the object side; a second lens, of which at least one surface is of an aspherical shape; a third lens, of which at least one surface is of an aspherical shape; a fourth lens, of which at least one surface is of an aspherical shape; a positive fifth lens of a meniscus shape with a convex surface toward the image side; a sixth lens, of which at least one surface is of an aspherical shape; and a negative seventh lens having a concave surface toward the image side, provided in this order from the object side. The imaging lens satisfies a predetermined conditional formula.
Abstract translation: 成像透镜基本上由七个透镜构成，包括：具有朝向物体侧的凸面的正的第一透镜; 第二透镜，其至少一个表面是非球面形状; 第三透镜，其至少一个表面是非球面形状; 第四透镜，其至少一个表面是非球面形状; 具有朝向图像侧的凸面的弯液面形状的正的第五透镜; 第六透镜，其至少一个表面是非球面形状; 以及从物体侧依次设置具有朝向像侧的凹面的负第七透镜。 成像透镜满足预定的条件公式。
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公开(公告)号：US09405095B2
公开(公告)日：2016-08-02
申请号：US14631895
申请日：2015-02-26
Applicant: FUJIFILM Corporation
Inventor： Tomoyuki Baba , Michio Cho
Abstract: An imaging lens consists of a first lens-group consisting of a positive lens with its surface that has the smaller absolute value of a curvature-radius facing an object-side, a positive lens in meniscus-shape with its convex-surface facing the object-side, a positive lens with its surface that has the smaller absolute value of a curvature-radius facing the object-side, and a negative lens with its surface that has the smaller absolute value of a curvature-radius facing an image-side, an aperture stop, a second lens-group consisting of a negative lens with its surface that has the smaller absolute value of a curvature-radius facing the object-side, a positive lens with its surface that has the smaller absolute value of a curvature-radius facing the image-side, and a positive lens, and a third lens-group consisting of a positive lens and a negative lens in this order from the object-side. A predetermined conditional expression is satisfied.
Abstract translation: 成像透镜包括由正透镜组成的第一透镜组，其正面透镜的表面具有面向物体侧的曲率半径的绝对值较小，弯月面形状的正透镜，其凸表面面向物体 其正面透镜的表面具有面向物体侧的曲率半径的绝对值较小的正透镜及其表面具有面对图像侧的曲率半径绝对值较小的负透镜， 孔径光阑，由具有面对物体侧的曲率半径绝对值较小的负透镜构成的第二透镜组，其表面的曲率半径绝对值较小的正透镜， 面向图像侧的半径，正透镜，以及由正透镜和负透镜构成的第三透镜组。 满足预定的条件表达式。
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Patent Agency Ranking
公开(公告)号：US09239446B2
公开(公告)日：2016-01-19
申请号：US14220709
申请日：2014-03-20
Applicant: FUJIFILM Corporation
Inventor： Kazuya Yoneyama , Michio Cho , Kazumi Koike
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, a third lens that has a negative refractive power, a fourth lens that has a positive refractive power, and a fifth lens that has a negative refractive power and has an object side surface and an image side surface which have aspheric shapes. 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，具有负折光力的第二透镜， 具有负屈光力的第三透镜，具有正折光力的第四透镜和具有负屈光力并具有物体侧表面的第五透镜和具有非球面形状的像侧表面。 此外，成像透镜满足预定条件表达式。
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公开(公告)号：US09116334B2
公开(公告)日：2015-08-25
申请号：US14193907
申请日：2014-02-28
Applicant: FUJIFILM Corporation
Inventor： Ukyo Tomioka , Michio Cho
IPC: G02B15/14 , G02B13/18 , G02B15/173
CPC classification number: G02B15/14 , G02B13/18 , G02B15/173
Abstract: A variable magnification optical system consists of a positive first lens-group, a negative second lens-group, a positive third lens-group and a positive fourth lens-group in this order from an object side. The first lens-group and the third lens-group are fixed when magnification is changed from a wide-angle end to a telephoto end, and the magnification is changed from the wide-angle end to the telephoto end by moving the second lens-group toward an image side, and correction of an image plane and focusing, which have been necessitated by magnification change, are performed by moving the fourth lens-group. The first lens-group consists of two positive lenses and a negative lens in this order from the object side. The second lens-group consists of a negative 21st lens, a positive 22nd lens, a negative 23rd lens and a negative 24th lens in this order from the object side.
Abstract translation: 可变倍率光学系统从物体侧依次包括正的第一透镜组，负的第二透镜组，正的第三透镜组和正的第四透镜组。 第一透镜组和第三透镜组在从广角端到望远端变化时是固定的，并且通过移动第二透镜组将倍率从广角端变为远摄端 通过移动第四透镜组来执行通过放大变化所必需的图像平面和聚焦的校正。 第一透镜组由物体侧依次由两个正透镜和负透镜组成。 第二透镜组由物体侧依次由负的第21透镜，正22透镜，负的第23透镜和负的第24透镜组成。
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公开(公告)号：US08982478B2
公开(公告)日：2015-03-17
申请号：US14208839
申请日：2014-03-13
Applicant: FUJIFILM Corporation
Inventor： Masato Kondo , Michio Cho
CPC classification number: G02B13/18 , G02B13/0045
Abstract: An imaging lens substantially includes five lenses, constituted by: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power and a convex surface that faces an object side; a fourth lens having a negative refractive power and a meniscus shape with a concave surface that faces the object side; and a fifth lens having a positive refractive power, a meniscus shape with a convex surface that faces the object side, and at least one inflection point on the surface thereof toward an image side.
Abstract translation: 成像透镜基本上包括五个透镜，由以下组成：具有正折光力的第一透镜; 具有负屈光力的第二透镜; 具有正折射力的第三透镜和面向物体侧的凸面; 具有负屈光力的第四透镜和具有面向物体侧的凹面的弯液面形状; 以及具有正屈光力的第五透镜，具有面向物体侧的凸面的弯液面形状以及朝向像侧的表面的至少一个拐点。
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公开(公告)号：US08922904B2
公开(公告)日：2014-12-30
申请号：US14093208
申请日：2013-11-29
Applicant: FUJIFILM Corporation
Inventor： Takashi Tanaka , Michio Cho
IPC: G02B15/14 , G02B15/173
CPC classification number: G02B15/14 , G02B15/173
Abstract: A zoom lens substantially consists of, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a negative fifth lens group. When varying magnification from the wide angle end to the telephoto end, a distance between the first lens group and the second lens group is always increased, a distance between the second lens group and the third lens group is always decreased, a distance between the third lens group and the fourth lens group is always decreased, and a distance between the fourth lens group and the fifth lens group is changed, while all of the lens groups are moved with respect to an image formation position. Formulas (Ca): −5.00≦1−(β5T)2
Abstract translation: 变焦透镜基本上由物体侧依次包括正的第一透镜组，负的第二透镜组，正的第三透镜组，正的第四透镜组和负的第五透镜组。 当从广角端到望远端变化放大倍数时，总是增加第一透镜组和第二透镜组之间的距离，第二透镜组和第三透镜组之间的距离总是减小，第三透镜组与第三透镜组之间的距离 透镜组和第四透镜组总是减小，并且第四透镜组和第五透镜组之间的距离改变，同时所有透镜组相对于图像形成位置移动。 式（Ca）：-5.00＆nlE; 1 - （＆bgr; 5T）2 <-2.5和（D）：0.10
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公开(公告)号：US11500184B2
公开(公告)日：2022-11-15
申请号：US16985312
申请日：2020-08-05
Applicant: FUJIFILM Corporation
Inventor： Takashi Suzuki , Michio Cho
Abstract: The imaging lens consists of, in order from the object side, a first positive lens group, a stop, a second positive lens group, and a third negative lens group. The first lens group includes a negative lens which has a concave surface on the image side, and two positive lenses which are disposed to be closer to the image side than the negative lens and which have respective convex surfaces on the object side, convex surfaces on the object side. The second lens group includes an aspheric lens, and two sets of cemented lenses disposed to be closer to the image side than the aspheric lens. The third lens group consists of one lens component.
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