-
公开(公告)号：US11092790B2
公开(公告)日：2021-08-17
申请号：US16580929
申请日：2019-09-24
Applicant: FUJIFILM Corporation
Inventor： Kazuyoshi Okada , Taro Asami
IPC: G02B15/177 , G02B15/167 , G02B13/18 , G02B13/00 , G02B5/00 , G02B9/64
Abstract: The imaging lens consists of, in order from an object side, a first lens group, a stop, and a positive second lens group. The second lens group has a negative lens on a side closest to an object and has a single lens or a cemented lens having a positive refractive power on a side closest to an image. Predetermined conditional expressions relating to a back focus, an incidence angle of a principal light ray on the image plane, a maximum image height, a distance from a lens surface on the side closest to the object to a lens surface on the side closest to the image, a distance from an object side principal point of the second lens group to a stop, and a focal length of the second lens group are satisfied.
-
公开(公告)号：US09405101B2
公开(公告)日：2016-08-02
申请号：US14579008
申请日：2014-12-22
Applicant: FUJIFILM Corporation
Inventor： Taro Asami
CPC classification number: G02B13/0045 , G02B3/04 , G02B5/005 , G02B9/62 , G02B13/0015 , G02B13/002 , G02B13/04 , G02B13/18 , G02B15/177 , G02B27/0018 , G02B27/0025 , H04N5/2254
Abstract: An imaging lens substantially consists of six lenses, composed of a negative first lens, a positive second lens, a negative third lens, a positive fourth lens, a positive fifth lens, and a negative sixth lens, disposed in order from the object side, and satisfies, when the distance between the first lens and the second lens is taken as Db12, the center thickness of the second lens is taken as D3, the focal length of the second lens is taken as f2, the focal length of the entire system is taken as f, the paraxial radius of curvature of the object side surface of the first lens is taken as R1f, and the paraxial radius of curvature of the image side surface of the first lens is taken as R1r, conditional expressions given below: 1.0
Abstract translation: 成像透镜基本上由从物体侧依次布置的六个透镜组成，该透镜由负的第一透镜，正的第二透镜，负的第三透镜，正的第四透镜，正的第五透镜和负的第六透镜组成， 并且当将第一透镜和第二透镜之间的距离作为Db12时，将第二透镜的中心厚度设为D3，将第二透镜的焦距设为f2，将整个系统的焦距设为 作为f，将第一透镜的物体侧表面的近轴曲率半径设为R1f，将第一透镜的像侧面的近轴曲率半径设为R1r，条件式如下：1.0 <（Db12 + D3）/ f（1）f2 / f <1.68（2）1.1 <（R1f + R1r）/（R1f-R1r）<2.2（3-3）。
-
公开(公告)号：US09075223B2
公开(公告)日：2015-07-07
申请号：US14064839
申请日：2013-10-28
Applicant: FUJIFILM Corporation
Inventor： Taro Asami
CPC classification number: G02B13/04 , G02B9/34 , G02B13/004 , G02B13/06
Abstract: An imaging lens consists of a negative first lens, a negative second lens, a third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (3) is satisfied: 1.0
Abstract translation: 成像透镜由负的第一透镜，负的第二透镜，具有朝向物体侧的凸面的平凸形状的第三透镜或具有朝向物体侧的凸面的正弯月形形成，以及 具有朝向图像侧的凸面的正平面凸部的第四透镜或具有朝向像侧的凸面的正弯月形状的第四透镜，其从物体侧依次配置。 此外，满足以下条件式（3）：1.0 <| f2 / f | <2.6（3）其中f：整个系统的焦距，f2：第二透镜的焦距。
-
公开(公告)号：US08896939B2
公开(公告)日：2014-11-25
申请号：US14055267
申请日：2013-10-16
Applicant: FUJIFILM Corporation
Inventor： Taro Asami
CPC classification number: G02B13/04 , G02B9/34 , G02B13/004 , G02B13/06
Abstract: An imaging lens consists of negative first lens, negative second lens of a biconcave shape, third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (11) is satisfied: 3.1
Abstract translation: 成像透镜由负第一透镜，双凹面形状的负第二透镜，具有朝向物体侧的凸面的平凸形状的第三透镜或具有朝向物体侧的凸面的正弯月形构成， 以及具有朝向图像侧的凸表面或具有朝向图像侧的凸面的正弯月形的平凸形状的第四透镜，其从物体侧依次排列。 此外，满足以下条件式（11）：3.1
-
公开(公告)号：US10302907B2
公开(公告)日：2019-05-28
申请号：US15622894
申请日：2017-06-14
Applicant: FUJIFILM Corporation
Inventor： Taro Asami , Takeshi Kamiya
Abstract: Disclosed are an imaging lens having satisfactory performance in a region of near infrared light, and an imaging apparatus including the imaging lens. The imaging lens includes, in order from an object side, as lenses having refractive power, only four lenses including a positive first lens L1, a negative second lens L2, a positive third lens L3, and a positive fourth lens L4. A conditional expression relating to a focal length fs1 of the first lens L1 with respect to s-line and a focal length fs of the entire system with respect to s-line: 0.5
-
Patent Agency Ranking
公开(公告)号：US09632288B2
公开(公告)日：2017-04-25
申请号：US14857205
申请日：2015-09-17
Applicant: FUJIFILM Corporation
Inventor： Taro Asami
CPC classification number: G02B13/0045 , G02B3/04 , G02B5/005 , G02B9/62 , G02B13/002 , G02B13/04 , G02B13/18 , G02B15/177
Abstract: An imaging lens consists of a negative first lens, a positive second lens, a negative third lens, a positive fourth lens, a positive fifth lens, and a negative sixth lens in order from the object side. The Abbe number of the material of the sixth lens with respect to the d-line is less than or equal to 30. When the radius of curvature of the object side surface of the third lens is taken as R3F, the radius of curvature of the image side surface of the third lens is taken as R3R, and the Abbe number of the material of the third lens with respect to the d-line is taken as νd3, the following conditional expressions are satisfied: 1.35
-
公开(公告)号：US09606329B2
公开(公告)日：2017-03-28
申请号：US14855867
申请日：2015-09-16
Applicant: FUJIFILM Corporation
Inventor： Taro Asami
CPC classification number: G02B13/0045 , G02B9/64 , G02B13/04 , G02B27/0025
Abstract: An imaging lens consists of, in order from the object side, a negative first lens, a positive second lens, a positive third lens, a negative fourth lens, a positive fifth lens, a positive sixth lens, and a negative seventh lens. When f12 is the combined focal length of the first lens and the second lens, f is the focal length of the entire system, νd7 and νd3 are respectively the Abbe's numbers of the materials of the seventh lens and the third lens with respect to the d line, the following conditional formulae are satisfied: f12/f
-
公开(公告)号：US09519123B2
公开(公告)日：2016-12-13
申请号：US14855405
申请日：2015-09-16
Applicant: FUJIFILM Corporation
Inventor： Taro Asami
CPC classification number: G02B13/0045 , G02B9/64 , G02B13/04 , G02B27/0025
Abstract: An imaging lens consists of, in order from the object, a negative first lens, a positive second lens, a positive third lens, a negative fourth lens, a positive fifth lens, a positive sixth lens, and a negative seventh lens. When νd7 is the Abbe's number of the material for the seventh lens, f is the focal length of the entire system, and f5 is the focal length of the fifth lens, the following conditional formulae are satisfied: νd7
-
公开(公告)号：US09470873B2
公开(公告)日：2016-10-18
申请号：US14569865
申请日：2014-12-15
Applicant: FUJIFILM CORPORATION
Inventor： Taro Asami
CPC classification number: G02B9/08 , G02B5/005 , G02B9/06 , G02B9/64 , G02B15/161 , G02B27/0025
Abstract: The imaging lens substantially consists of a first lens group having a positive refractive power and a second lens group having a positive refractive power, in which the entire second lens group moves along the optical axis to perform focusing. In the imaging lens, the first lens group comprises a positive first lens, a negative second lens, a negative third lens, a positive fourth lens, and a positive fifth lens in this order from the object side. When the Abbe number of the second lens with respect to the d-line is νd2 and the Abbe number of the third lens with respect to the d-line is νd3, conditional formula (1) below is satisfied: 2.0
Abstract translation: 成像透镜基本上由具有正屈光力的第一透镜组和具有正屈光力的第二透镜组组成，其中整个第二透镜组沿着光轴移动以进行聚焦。 在成像透镜中，第一透镜组从物体侧依次包括正的第一透镜，负的第二透镜，负的第三透镜，正的第四透镜和正的第五透镜。 当第二透镜的相对于d线的阿贝数为＆ngr; d2且第三透镜的相对于d线的阿贝数为＆ngr; d3时，满足以下条件式（1）：2.0 < ＆ngr; d2 /＆ngr; d3（1）。
-
公开(公告)号：US08902516B2
公开(公告)日：2014-12-02
申请号：US14224090
申请日：2014-03-25
Applicant: FUJIFILM Corporation
Inventor： Taro Asami , Toshiaki Katsuma , Toru Ito
CPC classification number: G02B9/62 , G02B13/0045 , G02B13/04 , G02B13/06 , G02B13/18
Abstract: An imaging lens substantially consists of six lenses of a negative first lens, a negative second lens, a positive third lens, a positive fourth lens, a negative fifth lens and a positive sixth lens in this order from an object side. An object-side surface of the second lens has a shape having negative refractive power at a center, and including a part having positive refractive power in an area between the center and an effective diameter edge, and having negative refractive power at the effective diameter edge (concave shape facing the object side), and the refractive power at the effective diameter edge being weaker than the refractive power at the center. Further, an object-side surface of the third lens is convex toward the object side. Further, a predetermined conditional formula about a combined focal length of the first lens, the second lens and the third lens is satisfied.
Abstract translation: 成像透镜基本上由物体侧依次由负的第一透镜，负的第二透镜，正的第三透镜，正的第四透镜，负的第五透镜和正的第六透镜的六个透镜组成。 第二透镜的物体侧表面具有在中心具有负折光力的形状，并且包括在中心与有效直径边缘之间的区域中具有正折光力的部分，并且在有效直径边缘处具有负折光力 （面向物体侧的凹形），有效直径边缘处的屈光力弱于中心处的屈光力。 此外，第三透镜的物体侧表面朝物体侧凸出。 此外，满足关于第一透镜，第二透镜和第三透镜的组合焦距的预定条件公式。
-
-
-
-
-
-
-
-
-
Search Results
32
records
(took 0.027 seconds)
