公开(公告)号：US20100103537A1

公开(公告)日：2010-04-29

申请号：US12607753

申请日：2009-10-28

申请人： Yu KITAHARA ,  Yoko Yamamoto ,  Taro Asami

发明人： Yu KITAHARA ,  Yoko Yamamoto ,  Taro Asami

IPC分类号： G02B9/60

CPC分类号： G02B9/60

摘要： An imaging lens includes, in order from an object side, a first lens having a negative power and including a concave image-side surface, a second lens having a positive power, a stop, a third negative lens, which is a biconcave lens, a fourth lens having a positive power, and a fifth lens having a positive power and including a convex image-side surface. The imaging lens satisfies the following conditional expressions: 0.18

摘要翻译： 成像透镜从物体侧依次包括具有负光焦度并包括凹面像侧面的第一透镜，具有正光焦度的第二透镜，作为双凹透镜的第三透镜，第三负透镜， 具有正功率的第四透镜和具有正功率并包括凸像侧表面的第五透镜。 成像透镜满足以下条件表达式：0.18 <（D4 + D5）/ f <0.44和0.18

公开(公告)号：US07911712B2

公开(公告)日：2011-03-22

申请号：US12607753

申请日：2009-10-28

申请人： Yu Kitahara ,  Yoko Yamamoto ,  Taro Asami

发明人： Yu Kitahara ,  Yoko Yamamoto ,  Taro Asami

IPC分类号： G02B9/60

CPC分类号： G02B9/60

摘要： An imaging lens includes, in order from an object side, a first lens having a negative power and including a concave image-side surface, a second lens having a positive power, a stop, a third negative lens, which is a biconcave lens, a fourth lens having a positive power, and a fifth lens having a positive power and including a convex image-side surface. The imaging lens satisfies the following conditional expressions: 0.18

摘要翻译： 成像透镜从物体侧依次包括具有负光焦度并包括凹面像侧面的第一透镜，具有正光焦度的第二透镜，作为双凹透镜的第三透镜，第三负透镜， 具有正功率的第四透镜和具有正功率并包括凸像侧表面的第五透镜。 成像透镜满足以下条件表达式：0.18 <（D4 + D5）/ f <0.44和0.18

公开(公告)号：US08289628B2

公开(公告)日：2012-10-16

申请号：US12949161

申请日：2010-11-18

申请人： Taro Asami

发明人： Taro Asami

IPC分类号： G02B3/02 ,  G02B13/18 ,  G02B13/04 ,  G02B9/60

CPC分类号： G02B13/0045 ,  G02B13/06

摘要： An imaging lens includes negative first lens, negative second lens having a concave surface facing the image side, positive third lens, aperture stop, positive fourth lens, and fifth lens having a concave surface facing the object side, which are arranged sequentially from the object side. At least one of second lens, fourth lens and fifth lens has at least an aspheric surface. The Abbe number of third lens and the Abbe number of fifth lens are less than or equal to 30, and the Abbe number of fourth lens is greater than or equal to 40. Further, the following formula (1) is satisfied: 1.0

摘要翻译： 成像透镜包括负第一透镜，具有面向图像侧的凹面的负第二透镜，正第三透镜，孔径光阑，正第四透镜和具有面向物侧的凹面的第五透镜，其从物体顺序排列 侧。 第二透镜，第四透镜和第五透镜中的至少一个具有至少一个非球面。 第三透镜的阿贝数和第五透镜的阿贝数小于或等于30，第四透镜的阿贝数大于或等于40.此外，满足下式（1）：1.0 <（ R3-R4）/（R3 + R4）（1），其中R3：第二透镜的物体侧表面的近轴曲率半径，R4：第二透镜的像侧表面的近轴曲率半径。

公开(公告)号：US07957074B2

公开(公告)日：2011-06-07

申请号：US12471836

申请日：2009-05-26

申请人： Taro Asami

发明人： Taro Asami

IPC分类号： G02B13/18 ,  G02B3/02 ,  G02B9/62

CPC分类号： G02B13/04 ,  G02B13/18

摘要： An imaging lens system is provided an includes: in order from the object side, a first lens which has a negative power; a second lens which has a negative power; a third lens; a fourth lens which has a positive power; a fifth lens; and a sixth lens which has a positive power. The first lens is made of glass, and the second to sixth lenses are made of plastic. At least one lens surface of each of the second to sixth lenses is aspheric, and each of the third lens and the fifth lens is made of a material having an Abbe number of 45 or less at the d-line.

摘要翻译： 提供一种成像透镜系统，包括：从物体侧起依次具有负功率的第一透镜; 具有负功率的第二透镜; 第三透镜; 具有正功率的第四透镜; 第五个镜头; 以及具有正功率的第六透镜。 第一透镜由玻璃制成，第二至第六透镜由塑料制成。 第二至第六透镜中的每一个的至少一个透镜表面是非球面的，并且第三透镜和第五透镜中的每一个在d线处由阿贝数为45以下的材料制成。

公开(公告)号：US20070091457A1

公开(公告)日：2007-04-26

申请号：US11583109

申请日：2006-10-19

申请人： Taro Asami

发明人： Taro Asami

IPC分类号： G02B15/14

CPC分类号： G02B13/0035 ,  G02B9/12 ,  G02B13/04 ,  G02B13/06 ,  G02B13/18 ,  G02B27/0037 ,  G02B27/4211

摘要： A wide-angle imaging lens is provided and includes: a first lens, a second lens, and a third lens in this order from the object side. The first lens is a negative meniscus and has a convex surface on the object side; the second lens, at least one surface of which is an aspherical surface; and the third lens is a positive lens and has a convex surface on the image side and at least one surface of the third lens is an aspherical surface. The first len is made of a material having an Abbe number of 40 or more and the third lens is made of a material having an Abbe number of 50 or more. At least one surface of the second lens and the third lens has a diffracting function. An aperture stop is disposed between the second lens and the third lens.

摘要翻译： 提供了一种广角成像透镜，包括：从物体侧开始依次包括第一透镜，第二透镜和第三透镜。 第一透镜是负弯液面并且在物体侧具有凸表面; 所述第二透镜的至少一个表面是非球面; 并且第三透镜是正透镜，并且在像侧具有凸表面，并且第三透镜的至少一个表面是非球面。 第一层由阿贝数为40以上的材料制成，第三透镜​​由阿贝数为50以上的材料构成。 第二透镜和第三透镜的至少一个表面具有衍射功能。 孔径光阑设置在第二透镜和第三透镜之间。

公开(公告)号：US09036278B2

公开(公告)日：2015-05-19

申请号：US14063099

申请日：2012-04-27

申请人： Taro Asami

发明人： Taro Asami

IPC分类号： G02B13/04 ,  G02B9/34 ,  G02B13/00 ,  G02B13/06

CPC分类号： G02B13/04 ,  G02B9/34 ,  G02B13/004 ,  G02B13/06

摘要： 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 (1) is satisfied: 2.25

摘要翻译： 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（1）：2.25 <＆ngr; d2 /＆ngr; d3（1）其中＆ngr; d2：用于d线的第二透镜的材料的阿贝数，＆ngr; d3： 用于d线的第三透镜的材料的阿贝数。

公开(公告)号：US07982976B2

公开(公告)日：2011-07-19

申请号：US12053410

申请日：2008-03-21

申请人： Taro Asami

发明人： Taro Asami

IPC分类号： G02B9/34

CPC分类号： G02B13/146 ,  G02B9/34 ,  G02B13/16

摘要： An imaging lens is provided and includes: in order from an object side of the imaging lens, a first lens group having a positive power as a whole; a second lens group including a lens in the most object side thereof, the lens having a concave surface on the object side thereof; a third lens group including a cemented lens of a lens having a positive power and a lens having a negative power; and a fourth lens group having a negative power as a whole.

摘要翻译： 提供了一种成像透镜，包括：从成像透镜的物体侧起依次具有作为整体的正光焦度的第一透镜组; 第二透镜组，其包括在其最物体侧的透镜，所述透镜在其物体侧具有凹面; 第三透镜组，其包括具有正光焦度的透镜的胶合透镜和具有负光焦度的透镜; 以及整体具有负电力的第四透镜组。

公开(公告)号：US07813056B2

公开(公告)日：2010-10-12

申请号：US11857336

申请日：2007-09-18

申请人： Taro Asami

发明人： Taro Asami

IPC分类号： G02B27/10 ,  G02B13/18 ,  G02B3/02

CPC分类号： G02B15/177 ,  G02B9/12 ,  G02B13/0035 ,  G02B13/18

摘要： An imaging lens comprises, in order from an object side: a first lens having a negative refractive power with a concave surface on an image side thereof; a second lens with at least one aspherical surface; an aperture stop; and a third lens having a positive refractive power with at least one aspherical surface, wherein the first lens is formed of an optical glass whose Abbe number is 40 or more, the second lens is formed of a plastic whose Abbe number is 40 or less, and the third lens is formed of a plastic whose Abbe number is 50 or more, and wherein assuming that a point, where a light ray which constitutes an outermost light ray in light rays which enter an image plane intersects a lens surface, constitutes an effective aperture terminating edge, the second lens is such that an intersection point between an object side surface and an optical axis lies closer to an image forming side of the imaging lens than an effective aperture terminating edge of the object side surface does.

摘要翻译： 成像透镜从物体侧依次包括：具有负折射光焦度的第一透镜，其像侧上具有凹面; 具有至少一个非球面的第二透镜; 孔径光阑; 以及具有至少一个非球面的正屈光力的第三透镜，其中所述第一透镜由阿贝数为40以上的光学玻璃形成，所述第二透镜由阿贝数为40以下的塑料形成， 并且第三透镜由阿贝数为50以上的塑料形成，并且其中假设在进入图像平面的光线中构成最外侧光线的光线与透镜表面相交的点构成有效的 第二透镜使得物体侧表面和光轴之间的交点比物体侧表面的有效孔径终止边缘更靠近成像透镜的图像形成侧。

公开(公告)号：US07684127B2

公开(公告)日：2010-03-23

申请号：US12166858

申请日：2008-07-02

申请人： Taro Asami

发明人： Taro Asami

IPC分类号： G02B9/60 ,  G02B9/08

CPC分类号： G02B9/34 ,  G02B9/60 ,  G02B13/001 ,  G02B13/005 ,  G02B13/006 ,  G02B13/06

摘要： It is provided that an imaging lens having satisfactory optical performances and being reduced in size and cost. The imaging lens includes in order from an object side, a negative first lens, a negative second lens, a positive third lens, a stop, a positive fourth lens and a negative fifth lens L5. And the focal length f3 of the third lens at d-line, the focal length f of the whole system at d-line satisfy 3.0

摘要翻译： 提供了具有令人满意的光学性能并且尺寸和成本降低的成像透镜。 成像透镜从物体侧依次包括负的第一透镜，负的第二透镜，正的第三透镜，光阑，正的第四透镜和负的第五透镜L5。 而第三透镜在d线的焦距f3，整个系统在d线的焦距f满足3.0

公开(公告)号：US07436605B2

公开(公告)日：2008-10-14

申请号：US11864382

申请日：2007-09-28

申请人： Taro Asami

发明人： Taro Asami

IPC分类号： G02B9/12 ,  G02B3/02 ,  G02B9/00

CPC分类号： G02B13/0035 ,  G02B9/12

摘要： An imaging lens is configured sequentially from the object side by: a first lens having a meniscus shape where a convex surface is directed to the object side; a second lens; and a positive third lens in which an image-side surface is a convex surface. The first lens, the second lens, and the third lens are configured by a bi-aspherical plastic lens. The second lens is configured by a bi-convex lens in which the absolute value of the radius of curvature of the object-side surface is smaller than that of the image-side surface. The third lens is a positive lens and a meniscus lens in which a concave surface is directed to the object side, and a convex surface is directed to the image side.

摘要翻译： 成像透镜从物体侧依次配置：具有弯曲面形状的第一透镜，其中凸面指向物体侧; 第二个镜头; 以及图像侧表面是凸面的正的第三透镜。 第一透镜，第二透镜和第三透镜由双非球面塑料透镜构成。 第二透镜由双凸透镜构成，其中物侧表面的曲率半径的绝对值小于图像侧表面的曲率半径的绝对值。 第三透镜是其中凹面指向物侧的正透镜和弯月透镜，凸面指向像侧。