公开(公告)号：US08988793B2

公开(公告)日：2015-03-24

申请号：US13494406

申请日：2012-06-12

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Tomohiro Yonezawa

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Tomohiro Yonezawa

IPC分类号： G02B9/60 ,  G02B13/00

CPC分类号： G02B13/0045 ,  G02B9/60 ,  G02B27/0025

摘要： An imaging lens includes a positive first lens; a negative second lens with a meniscus lens shape directing a convex surface thereof to an object side near an optical axis; a positive third lens; a negative fourth lens with a meniscus lens shape directing a concave surface thereof to the object side near the optical axis; a negative fifth lens with a meniscus lens shape directing a convex surface thereof to the object side near the optical axis, arranged in this order from the object side. The imaging lens satisfies the following conditional expressions when the first lens has a focal length f1, the second lens has a focal length f2, the third lens has a focal length f3, the fourth lens has a focal length f4, and the fifth lens has a focal length f5: f1

摘要翻译： 成像透镜包括正的第一透镜; 具有将其凸形表面引导到靠近光轴的物体侧的弯月透镜形状的负第二透镜; 正第三透镜; 具有弯曲透镜形状的负第四透镜，其凹面朝向光轴附近的物体侧; 具有弯曲透镜形状的负第五透镜，其将其凸表面引导到物体侧的靠近光轴的物体侧，从物体侧依次排列。 当第一透镜具有焦距f1，第二透镜具有焦距f2，第三透镜​​具有焦距f3，第四透镜具有焦距f4时，成像透镜满足以下条件表达式，并且第五透镜具有 焦距f5：f1

公开(公告)号：US08879172B2

公开(公告)日：2014-11-04

申请号：US13347048

申请日：2012-01-10

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Sumio Fukuda

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Sumio Fukuda

IPC分类号： G02B9/34 ,  G02B13/18 ,  G02B13/00

CPC分类号： G02B13/004 ,  G02B9/34 ,  G02B13/18

摘要： An imaging lens includes a first lens L1 that has a biconvex shape near an optical axis and has positive refractive power, a second lens L2 that has a biconcave shape near the optical axis and has negative refractive power, a third lens L3 that has a shape of a meniscus lens directing a concave surface thereof to an object side near an optical axis and has positive refractive power, and a fourth lens L4 that has a biconcave shape near the optical axis and has negative refractive power, arranged in this order from the object side. When the whole lens system has a focal length f and the fourth lens L4 has a focal length f4, the imaging lens of the invention satisfies the following expression: −0.7

摘要翻译： 成像透镜包括在光轴附近具有双凸形状并且具有正折光力的第一透镜L1，在光轴附近具有双凹形状并具有负折光力的第二透镜L2，具有负折射力的第三透镜L3，具有形状 的凹凸透镜将其凹面指向光轴附近的物体侧并具有正折光力;以及第四透镜L4，其具有靠近光轴并具有负折光力的第二透镜L4，该第四透镜L4从物体依次排列 侧。 当整个透镜系统具有焦距f并且第四透镜L4具有焦距f4时，本发明的成像镜片满足以下表达式：-0.7

公开(公告)号：US08760769B2

公开(公告)日：2014-06-24

申请号：US13448653

申请日：2012-04-17

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： A zoom lens includes a first lens group G1 that is negative, a second lens group G2 that is negative, and a third lens group G3 that is positive. The first lens group G1 includes a first lens L1 that is negative and a prism P, and the second lens group G2 includes a second lens L2 that is positive and a third lens L3 that is negative. The third lens group G3 includes a stop ST, a fourth lens L4 that is positive, and a fifth lens L5 that is negative. According to this configuration, upon changing magnification from a wide-angle end to a telephoto end, the first lens group G1 is secured, the second lens group G2 first moves to the image plane side and then moves to the object side, and the third lens group G3 linearly moves to the object side.

摘要翻译： 变焦透镜包括为负的第一透镜组G1，为负的第二透镜组G2和为正的第三透镜组G3。 第一透镜组G1包括负的第一透镜L1和棱镜P，并且第二透镜组G2包括正的第二透镜L2和为负的第三透镜L3。 第三透镜组G3包括挡块ST，正的第四透镜L4和为负的第五透镜L5。 根据该结构，在从广角端到望远端的倍率变化时，固定第一透镜组G1，第二透镜组G2首先移动到像面侧，然后移动到物体侧，第三透镜​​组 透镜组G3直线移动到物体侧。

公开(公告)号：US08477435B2

公开(公告)日：2013-07-02

申请号：US13478762

申请日：2012-05-23

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Sumio Fukuda

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Sumio Fukuda

IPC分类号： G02B9/34 ,  G02B13/18

CPC分类号： G02B13/004 ,  G02B9/34 ,  G02B13/18

摘要： An imaging lens, although compact, has satisfactorily corrected aberrations. The imaging lens is configured by disposing, in sequence from the object side, a stop (ST); a first lens (L1), which has a double convex shape near the optical axis; a meniscus-shaped negative second lens (L2) which has near the optical axis a convex surface facing the object side; a meniscus-shaped positive third lens (L3) which has near the optical axis a concave surface facing the object side; and a positive fourth lens (L4) which has a double convex shape near the optical axis. In the configuration, the refractive power of the first lens (L1) is greater than the refractive power of each of the second lens (L2), the third lens (L3), and the fourth lens (L4).

摘要翻译： 成像透镜虽然紧凑，但令人满意地校正了像差。 成像透镜通过从物体侧依次设置止动件（ST）而构成; 第一透镜（L1），其在光轴附近具有双凸形状; 弯液面状的负第二透镜（L2），其在光轴附近具有面向物体侧的凸面; 在光轴附近具有面向物体侧的凹面的弯液面状的正的第三透镜（L3） 以及在光轴附近具有双凸形状的正的第四透镜（L4）。 在该结构中，第一透镜（L1）的屈光力大于第二透镜（L2），第三透镜​​（L3）和第四透镜（L4）中的每一个的折射力。

公开(公告)号：US20130057973A1

公开(公告)日：2013-03-07

申请号：US13597521

申请日：2012-08-29

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Tomohiro Yonezawa

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Tomohiro Yonezawa

IPC分类号： G02B9/60

CPC分类号： G02B13/0045 ,  G02B9/60 ,  G02B13/18

摘要： An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth and a fifth lens having negative refractive power. The first lens is formed so that a curvature radius of an object-side surface is positive and the second lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are positive. The third lens is formed so that a curvature radius of an object-side surface is positive, and the fifth lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are both positive. An Abbe's number from the first and the third to the fifth lens is greater than 45, and an Abbe's number of the second lens is less than 35.

摘要翻译： 成像透镜包括具有正折光力的第一透镜; 具有负屈光力的第二透镜; 具有正折射光焦度的第三透镜; 以及具有负屈光力的第四和第五透镜。 第一透镜被形成为使得物体侧表面的曲率半径为正，并且第二透镜形成为使得物体侧表面的曲率半径和像面侧表面的曲率半径为正。 第三透镜被形成为使得物体侧表面的曲率半径为正，并且第五透镜形成为使得物体侧表面的曲率半径和像面侧表面的曲率半径均为正 。 从第一和第三到第五透镜的阿贝数大于45，第二透镜的阿贝数小于35。

公开(公告)号：US20120293871A1

公开(公告)日：2012-11-22

申请号：US13455479

申请日：2012-04-25

申请人： Yoji KUBOTA ,  Kenichi Kubota ,  Hitoshi Hirano

发明人： Yoji KUBOTA ,  Kenichi Kubota ,  Hitoshi Hirano

IPC分类号： G02B15/177

CPC分类号： G02B15/173

摘要： A zoom lens includes a first lens group, a second lens group, a third lens group, and a fourth lens group. The first lens group includes a first lens that has positive refractive power, a second lens that has negative refractive power, and a prism. The second lens group includes a third lens that has positive refractive power and a fourth lens that has negative refractive power. The third lens group includes a stop, a fifth lens that has positive refractive power, and a sixth lens that has negative refractive power. The fourth lens group includes a seventh lens that has positive refractive power. Upon changing magnification from a wide-angle end to a telephoto end, the first and fourth lens groups are fixed, the second lens group first moves toward an image plane side and then moves toward an object side, and the third lens group linearly moves toward the object side.

摘要翻译： 变焦镜头包括第一透镜组，第二透镜组，第三透镜​​组和第四透镜组。 第一透镜组包括具有正屈光力的第一透镜，具有负屈光力的第二透镜和棱镜。 第二透镜组包括具有正折光力的第三透镜和具有负屈光力的第四透镜。 第三透镜组包括具有正屈光力的光阑，第五透镜和具有负屈光力的第六透镜。 第四透镜组包括具有正屈光力的第七透镜。 在从广角端到望远端的倍率变化时，第一透镜组和第四透镜组是固定的，第二透镜组首先朝向像平面侧移动，然后朝向物体侧移动，并且第三透镜组线性移动朝向 物体侧。

公开(公告)号：US08879167B2

公开(公告)日：2014-11-04

申请号：US13597521

申请日：2012-08-29

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Tomohiro Yonezawa

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Tomohiro Yonezawa

IPC分类号： G02B3/02 ,  G02B13/00 ,  G02B13/18 ,  G02B9/60

CPC分类号： G02B13/0045 ,  G02B9/60 ,  G02B13/18

摘要： An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth and a fifth lens having negative refractive power. The first lens is formed so that a curvature radius of an object-side surface is positive and the second lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are positive. The third lens is formed so that a curvature radius of an object-side surface is positive, and the fifth lens is formed so that a curvature radius of an object-side surface and a curvature radius of an image plane-side surface are both positive. An Abbe's number from the first and the third to the fifth lens is greater than 45, and an Abbe's number of the second lens is less than 35.

摘要翻译： 成像透镜包括具有正折光力的第一透镜; 具有负屈光力的第二透镜; 具有正折射光焦度的第三透镜; 以及具有负屈光力的第四和第五透镜。 第一透镜被形成为使得物体侧表面的曲率半径为正，并且第二透镜形成为使得物体侧表面的曲率半径和像面侧表面的曲率半径为正。 第三透镜被形成为使得物体侧表面的曲率半径为正，并且第五透镜被形成为使得物体侧表面的曲率半径和像面侧表面的曲率半径均为正 。 从第一和第三到第五透镜的阿贝数大于45，第二透镜的阿贝数小于35。

公开(公告)号：US08630047B2

公开(公告)日：2014-01-14

申请号：US13557404

申请日：2012-07-25

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise

IPC分类号： G02B9/16 ,  G02B3/02

CPC分类号： G02B13/0035 ,  G02B9/16 ,  H01L27/14625

摘要： An imaging lens includes a first lens; a second lens; and a third lens. A curvature radius of an object-side surface and an image plane-side surface of the first lens is positive. The second lens is formed such that a curvature radius of an object-side surface is negative and a curvature radius of an image plane-side surface is positive. A curvature radius of an object-side surface and an image plane-side surface of the third lens is positive. When the first lens has a focal length f1, the second lens has a focal length f2, the third lens has a focal length f3, a composite focal length of the first lens and the second lens is f12, and a composite focal length of the second lens and the third lens is f23, the imaging lens satisfies the following expressions: f1

摘要翻译： 成像透镜包括第一透镜; 第二个镜头; 和第三透镜。 第一透镜的物体侧表面和像面侧表面的曲率半径为正。 第二透镜被形成为使得物体侧表面的曲率半径为负，并且图像平面侧表面的曲率半径为正。 第三透镜的物体侧表面和像面侧表面的曲率半径为正。 当第一透镜具有焦距f1时，第二透镜具有焦距f2，第三透镜​​具有焦距f3，第一透镜和第二透镜的合成焦距为f12，并且复合焦距 第二透镜和第三透镜是f23，成像透镜满足以下表达式：f1 <| f2 | f1

公开(公告)号：US08570670B2

公开(公告)日：2013-10-29

申请号：US13409510

申请日：2012-03-01

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Sumio Fukuda

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara ,  Yoshio Ise ,  Sumio Fukuda

IPC分类号： G02B13/04 ,  G02B3/02

CPC分类号： G02B13/04 ,  G02B13/0045

摘要： An imaging lens includes a first lens having negative refractive power; a second lens having negative refractive power; a third lens; a fourth lens; and a fifth lens. The first lens has a positive curvature radius on an image plane side. The second lens has a sharp convex surface, and a positive curvature radius on the image plane side. The third lens has a positive curvature radius on the object side and a negative curvature radius on the image plane side. The fourth lens has a negative curvature radius on the object side and a positive curvature radius on the image plane side. The fifth lens has a positive curvature radius on the object side and a negative curvature radius on the image plane side, and an aspheric surface.

摘要翻译： 成像透镜包括具有负屈光力的第一透镜; 具有负屈光力的第二透镜; 第三透镜; 第四个镜头; 和第五透镜。 第一透镜在像平面侧具有正曲率半径。 第二透镜具有锐利的凸面，在像面侧具有正曲率半径。 第三透镜在物体侧具有正曲率半径，在像平面侧具有负曲率半径。 第四透镜在物体侧具有负曲率半径，在像面上具有正曲率半径。 第五透镜在物体侧具有正曲率半径，在像面侧具有负曲率半径，以及非球面。

公开(公告)号：US08416510B2

公开(公告)日：2013-04-09

申请号：US13289452

申请日：2011-11-04

申请人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano

发明人： Yoji Kubota ,  Kenichi Kubota ,  Hitoshi Hirano

IPC分类号： G02B13/04 ,  G02B9/58 ,  G02B9/34 ,  H04N5/225

CPC分类号： G02B9/58 ,  G02B3/04 ,  G02B13/004

摘要： An imaging lens includes a first lens group having a first lens that directs a concave surface to an image plane side and is negative; a second lens group having a second lens that directs a concave surface to an object side and is positive; an aperture; a third lens group having a third lens that is positive; and a fourth lens group having a joined lens that is composed of a fourth lens that is positive and a fifth lens that is negative. In the configuration, when the whole lens system has a focal length f and a composite focal length of the first lens group to the third lens group is Fa, the imaging lens satisfies the following relation: 0.3

摘要翻译： 成像透镜包括：第一透镜组，具有将凹面指向像面侧的第一透镜，并且为负; 第二透镜组，具有将凹面指向物侧并具有正的第二透镜; 孔径 第三透镜组，具有正的第三透镜; 以及第四透镜组，具有由正的第四透镜和为负的第五透镜构成的接合透镜。 在该结构中，当整个透镜系统具有第一透镜组的焦距f和第三透镜组的合成焦距为Fa时，成像透镜满足以下关系：0.3