公开(公告)号：US08699145B2

公开(公告)日：2014-04-15

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： G02B15/14

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折光力的光阑，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：US20120113533A1

公开(公告)日：2012-05-10

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： G02B9/34

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焦距f并且第一透镜组与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

公开(公告)号：US08842378B2

公开(公告)日：2014-09-23

申请号：US13363766

申请日：2012-02-01

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

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

IPC分类号： G02B9/34 ,  G02B13/04 ,  G02B3/02 ,  G02B13/00

CPC分类号： G02B13/004 ,  G02B9/34

摘要： An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having negative refractive power; and a fourth lens having negative refractive power, arranged from an object side to an image plane side. In the first lens, a curvature radius on an object-side surface is positive and a curvature radius of an image-side surface is negative. In the third lens, curvature radii of an object-side surface and an image-side surface are both negative. In the fourth lens, curvature radii of an object-side surface and an image-side surface thereof are both positive. When the whole lens system has a focal length f and a distance from the object-side surface of the first lens to an image-side surface of the fourth lens is L14, the imaging lens satisfies the following expression: 0.5

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; 具有负屈光力的第三透镜; 以及从物体侧到像面侧配置的具有负屈光力的第四透镜。 在第一透镜中，物体侧表面上的曲率半径为正，图像侧表面的曲率半径为负。 在第三透镜中，物体侧表面和图像侧表面的曲率半径均为负。 在第四透镜中，物体侧表面和图像侧表面的曲率半径均为正。 当整个透镜系统具有焦距f并且从第一透镜的物体侧表面到第四透镜的像侧表面的距离为L14时，成像透镜满足以下表达式：0.5

公开(公告)号：US08427759B2

公开(公告)日：2013-04-23

申请号：US13086925

申请日：2011-04-14

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： G02B3/02 ,  G02B9/12 ,  H04N5/225

CPC分类号： G02B13/0035

摘要： An imaging lens includes a first lens having positive curvature radii on both an object side and an image side, a second lens having a concave shape on both sides, and a third lens having positive curvature radii on both the object side and the image side. The first to third lenses are arranged in this order from the object side toward the image side. When a whole lens system has a focal length f, the first lens has a focal length f1, the second lens has a focal length f2, and the third lens has a focal length f3, the following conditional expressions are satisfied: f1

摘要翻译： 成像透镜包括在物体侧和像侧均具有正曲率半径的第一透镜，在两侧具有凹形形状的第二透镜和在物体侧和像侧均具有正曲率半径的第三透镜。 第一至第三透镜从物体侧朝向像侧依次排列。 当整个透镜系统具有焦距f时，第一透镜具有焦距f1，第二透镜具有焦距f2，并且第三透镜具有焦距f3，满足以下条件表达式：f1 <| f2 | f1 <| f3 | 0.5

公开(公告)号：US20130003195A1

公开(公告)日：2013-01-03

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

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：US20120200945A1

公开(公告)日：2012-08-09

申请号：US13445154

申请日：2012-04-12

申请人： Yoji KUBOTA ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara

发明人： Yoji KUBOTA ,  Kenichi Kubota ,  Hitoshi Hirano ,  Ichiro Kurihara

IPC分类号： G02B9/34

CPC分类号： G02B13/004

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 lens having positive refractive power, arranged from an object side to an image plane side. In the first lens, a curvature radius on an object-side surface is positive and a curvature radius of an image-side surface is negative. In the second lens, curvature radii of an object-side surface and an image-side surface are both positive. In the third lens, curvature radii of an object-side surface and an image-side surface thereof are both negative. When the whole lens system has a focal length f and a distance from the object-side surface of the first lens to an image-side surface of the fourth lens is L14, the imaging lens satisfies the following expression: 0.5

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; 以及从物体侧到像面侧布置的具有正折光力的第四透镜。 在第一透镜中，物体侧表面上的曲率半径为正，图像侧表面的曲率半径为负。 在第二透镜中，物体侧表面和图像侧表面的曲率半径均为正。 在第三透镜中，物体侧表面和图像侧表面的曲率半径均为负。 当整个透镜系统具有焦距f并且从第一透镜的物体侧表面到第四透镜的像侧表面的距离为L14时，成像透镜满足以下表达式：0.5

公开(公告)号：US08508648B2

公开(公告)日：2013-08-13

申请号：US13206136

申请日：2011-08-09

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： H04N5/225 ,  G02B3/02 ,  G02B9/34

CPC分类号： G02B13/004

摘要： An imaging lens includes an aperture stop ST, a first lens L1 that is shaped to form a meniscus lens that directs a convex surface to the object side near an optical axis and has positive refractive power, a second lens L2 that is shaped to form a meniscus lens that directs a convex surface to the object side near the optical axis and has negative refractive power, a third lens L3 that is shaped to form a meniscus lens that directs a concave surface to the object side near the optical axis and has positive refractive power, and a fourth lens L4 that is shaped to form a meniscus lens that directs a convex surface to the object side near the optical axis, arranged in this order from an object side to an image side. When the first lens L1 has a focal length f1 and the second lens L2 has a focal length f2, the imaging lens is configured such that a relationship 0.3

摘要翻译： 成像透镜包括孔径光阑ST，第一透镜L1，其被成形为形成朝向光轴附近的物体侧的凸形表面并具有正折光力的弯月形透镜;第二透镜L2，其被成形为 弯曲透镜，其将凸表面引导到靠近光轴的物体侧并具有负折光力;第三透镜L3，其被成形为形成弯曲透镜，其将凹面指向靠近光轴的物体侧并且具有正折射率 功率以及第四透镜L4，其被成形为形成从物体侧到像侧依次布置的凸起表面朝向光轴附近的物体侧的弯月形透镜。 当第一透镜L1具有焦距f1并且第二透镜L2具有焦距f2时，成像透镜被配置为使得满足关系0.3 <| f1 / f2 | <0.7。

公开(公告)号：US08477434B2

公开(公告)日：2013-07-02

申请号：US13445154

申请日：2012-04-12

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

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

IPC分类号： G02B9/34 ,  G02B13/18

CPC分类号： G02B13/004

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 lens having positive refractive power, arranged from an object side to an image plane side. In the first lens, a curvature radius on an object-side surface is positive and a curvature radius of an image-side surface is negative. In the second lens, curvature radii of an object-side surface and an image-side surface are both positive. In the third lens, curvature radii of an object-side surface and an image-side surface thereof are both negative. When the whole lens system has a focal length f and a distance from the object-side surface of the first lens to an image-side surface of the fourth lens is L14, the imaging lens satisfies the following expression: 0.5

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; 以及从物体侧到像面侧布置的具有正折光力的第四透镜。 在第一透镜中，物体侧表面上的曲率半径为正，图像侧表面的曲率半径为负。 在第二透镜中，物体侧表面和图像侧表面的曲率半径均为正。 在第三透镜中，物体侧表面和图像侧表面的曲率半径均为负。 当整个透镜系统具有焦距f并且从第一透镜的物体侧表面到第四透镜的像侧表面的距离为L14时，成像透镜满足以下表达式：0.5

公开(公告)号：US20120194926A1

公开(公告)日：2012-08-02

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

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：US20120105705A1

公开(公告)日：2012-05-03

申请号：US13283235

申请日：2011-10-27

申请人： Yoji KUBOTA ,  Kenichi Kubota ,  Hitoshi Hirano

发明人： Yoji KUBOTA ,  Kenichi Kubota ,  Hitoshi Hirano

IPC分类号： H04N5/225 ,  G02B17/08

CPC分类号： G02B5/04 ,  G02B17/0852 ,  H04N5/2254

摘要： An imaging device includes a light source; a prism having an imaging surface to be contacted with an object; and an image-forming optical system that forms an image of the object. The image-forming optical system includes a front lens group having a first optical axis tilted relative to the imaging surface; an image plane tilted from a surface perpendicular to the first optical axis of the front lens group; and a rear lens group having a second optical axis shifted in parallel to the first optical axis of the front lens group. The image-forming optical system is arranged to satisfy the following conditional expression: |Aim|/(90°−Ain)

摘要翻译： 成像装置包括光源; 具有与物体接触的成像面的棱镜; 以及形成对象的图像的图像形成光学系统。 图像形成光学系统包括：具有相对于成像表面倾斜的第一光轴的前透镜组; 从垂直于前透镜组的第一光轴的表面倾斜的图像平面; 以及具有与前透镜组的第一光轴平行移位的第二光轴的后透镜组。 图像形成光学系统被设置为满足以下条件表达式：| Aim | /（90°-Ain）<0.5其中Ain是成像表面和第一光轴之间的锐角，并且Aim是 图像平面和垂直于第一光轴的表面。