公开(公告)号：US20120019706A1

公开(公告)日：2012-01-26

申请号：US13258955

申请日：2010-04-14

申请人： Masatoshi Yamashita ,  Takumi Iba ,  Nami Nagamori

发明人： Masatoshi Yamashita ,  Takumi Iba ,  Nami Nagamori

IPC分类号： H04N5/225 ,  G02B13/18

CPC分类号： G02B13/004 ,  G02B9/34

摘要： An image pickup lens capable of providing an angle of view of up to 70° or higher is provided. The image pickup lens can also be reduced in size and various aberrations associated with the lens can be corrected favorably, so that the image pickup lens is compatible with a high-pixel image pickup element. The image pickup lens 7 includes, in order from an object side to an image surface side: a first lens 1 that is a biconvex lens having positive power; a second lens 2 that has negative power and whose lens surface facing the image surface side is concave; a third lens 3 that is a meniscus lens having positive power and whose lens surface facing the image surface side is convex; and a fourth lens 4 that has negative power, whose lens surfaces are both aspherical and whose lens surface facing the image surface side is concave near an optical axis. The image pickup lens 7 satisfies the following conditional expressions (1) and (2), where f is the focal length of the overall optical system, Y′ is the maximum image height, and TL is the overall length of the optical system: 1.20

摘要翻译： 提供能够提供高达70°或更高视角的摄像镜头。 图像拾取镜头也可以减小尺寸，并且可以有利地校正与镜头相关联的各种像差，使得图像拾取镜头与高像素图像拾取元件兼容。 图像拾取透镜7从物体侧到图像面侧依次包括作为具有正光焦度的双凸透镜的第一透镜1; 具有负功率并且其透镜表面面向图像表面侧的第二透镜2是凹形的; 第三透镜3，其是具有正光焦度并且其透镜表面面对图像表面侧的弯月形透镜是凸的; 以及具有负功率的第四透镜4，其透镜表面是非球面的，并且其透镜表面面对图像表面侧在光轴附近是凹的。 图像拾取透镜7满足以下条件表达式（1）和（2），其中f是整个光学系统的焦距，Y'是最大图像高度，并且TL是光学系统的总长度：1.20

公开(公告)号：US20100309367A1

公开(公告)日：2010-12-09

申请号：US12864646

申请日：2009-07-10

申请人： Takumi Iba ,  Masatoshi Yamashita ,  Nami Nagamori

发明人： Takumi Iba ,  Masatoshi Yamashita ,  Nami Nagamori

IPC分类号： H04N5/232 ,  G02B13/18

CPC分类号： H04N5/2254 ,  G02B9/34 ,  G02B13/004 ,  G02B13/18

摘要： The present invention provides an imaging lens composed of four lenses that can be made compact (downsized, thinned), allows a reduction in cost and is compatible with a high pixel imaging element having a megapixel or more incorporated in a small mobile product such as a mobile phone. The imaging lens 7 includes, in order from the object side to the image surface side: an aperture stop 5; a first lens 1 having positive power; a second lens 2 composed of a meniscus lens having negative power whose lens surface facing the image surface side is concave; a third lens 3 composed of a meniscus lens having positive power whose lens surface facing the image surface side is convex, and a fourth lens 4 having negative power whose lens surfaces are both aspheric and lens surface facing the image surface side is concave in the vicinity of the optical axis. A diffractive optical element is formed on one of the lens surfaces of the first lens 1 or one of the lens surfaces of the second lens 2.

摘要翻译： 本发明提供一种由能够制造成小型化（小型化，变薄化）的四个透镜构成的摄像透镜，能够降低成本，并且与具有百万像素以上的高像素摄像元件相结合的小型移动产品 移动电话。 成像透镜7从物体侧到图像面侧依次包括孔径光阑5; 具有正功率的第一透镜1; 第二透镜2由具有负像素的弯月形透镜组成，其透镜表面面向图像表面侧为凹面; 由透镜表面朝向图像面侧的正电力的弯月形透镜构成的第三透镜3和透镜面均为非球面的负电力的第四透镜4以及面对图像面侧的透镜面在附近为凹面 的光轴。 衍射光学元件形成在第一透镜1的透镜表面之一或第二透镜2的透镜表面之一上。

公开(公告)号：US08400553B2

公开(公告)日：2013-03-19

申请号：US13258955

申请日：2010-04-14

申请人： Masatoshi Yamashita ,  Takumi Iba ,  Nami Nagamori

发明人： Masatoshi Yamashita ,  Takumi Iba ,  Nami Nagamori

IPC分类号： H04N5/225 ,  G02B3/02 ,  G02B9/34

CPC分类号： G02B13/004 ,  G02B9/34

摘要： An image pickup lens capable of providing an angle of view of up to 70° or higher is provided. The image pickup lens can also be reduced in size and various aberrations associated with the lens can be corrected favorably, so that the image pickup lens is compatible with a high-pixel image pickup element. The image pickup lens 7 includes, in order from an object side to an image surface side: a first lens 1 that is a biconvex lens having positive power; a second lens 2 that has negative power and whose lens surface facing the image surface side is concave; a third lens 3 that is a meniscus lens having positive power and whose lens surface facing the image surface side is convex; and a fourth lens 4 that has negative power, whose lens surfaces are both aspherical and whose lens surface facing the image surface side is concave near an optical axis. The image pickup lens 7 satisfies the following conditional expressions (1) and (2), where f is the focal length of the overall optical system, Y′ is the maximum image height, and TL is the overall length of the optical system: 1.20

摘要翻译： 提供能够提供高达70°或更高视角的摄像镜头。 图像拾取镜头也可以减小尺寸，并且可以有利地校正与镜片相关联的各种像差，使得图像拾取镜头与高像素图像拾取元件兼容。 图像拾取透镜7从物体侧到图像面侧依次包括作为具有正光焦度的双凸透镜的第一透镜1; 具有负功率并且其透镜表面面向图像表面侧的第二透镜2是凹形的; 第三透镜3，其是具有正光焦度并且其透镜表面面对图像表面侧的弯月形透镜是凸的; 以及具有负功率的第四透镜4，其透镜表面是非球面的，并且其透镜表面面对图像表面侧在光轴附近是凹的。 图像拾取透镜7满足以下条件表达式（1）和（2），其中f是整个光学系统的焦距，Y'是最大图像高度，并且TL是光学系统的总长度：1.20

公开(公告)号：US08194333B2

公开(公告)日：2012-06-05

申请号：US12864646

申请日：2009-07-10

申请人： Takumi Iba ,  Masatoshi Yamashita ,  Nami Nagamori

发明人： Takumi Iba ,  Masatoshi Yamashita ,  Nami Nagamori

IPC分类号： G02B3/02 ,  G02B9/34

CPC分类号： H04N5/2254 ,  G02B9/34 ,  G02B13/004 ,  G02B13/18

摘要： The present invention provides an imaging lens composed of four lenses that can be made compact (downsized, thinned), allows a reduction in cost and is compatible with a high pixel imaging element having a megapixel or more incorporated in a small mobile product such as a mobile phone. The imaging lens 7 includes, in order from the object side to the image surface side: an aperture stop 5; a first lens 1 having positive power; a second lens 2 composed of a meniscus lens having negative power whose lens surface facing the image surface side is concave; a third lens 3 composed of a meniscus lens having positive power whose lens surface facing the image surface side is convex, and a fourth lens 4 having negative power whose lens surfaces are both aspheric and lens surface facing the image surface side is concave in the vicinity of the optical axis. A diffractive optical element is formed on one of the lens surfaces of the first lens 1 or one of the lens surfaces of the second lens 2.

摘要翻译： 本发明提供一种由能够制造成小型化（小型化，变薄化）的四个透镜构成的摄像透镜，能够降低成本，并且与具有百万像素以上的高像素摄像元件相结合的小型移动产品 移动电话。 成像透镜7从物体侧到图像面侧依次包括孔径光阑5; 具有正功率的第一透镜1; 第二透镜2由具有负像素的弯月形透镜组成，其透镜表面面向图像表面侧为凹面; 由透镜表面朝向图像面侧的正电力的弯月形透镜构成的第三透镜3和透镜面均为非球面的负电力的第四透镜4以及面对图像面侧的透镜面在附近为凹面 的光轴。 衍射光学元件形成在第一透镜1的透镜表面之一或第二透镜2的透镜表面之一上。

公开(公告)号：US07800842B2

公开(公告)日：2010-09-21

申请号：US12446542

申请日：2008-02-19

申请人： Takumi Iba ,  Nami Nagamori

发明人： Takumi Iba ,  Nami Nagamori

IPC分类号： G02B9/14 ,  G02B13/08 ,  G02B3/02

CPC分类号： G02B13/0035 ,  G02B9/16

摘要： A photography lens 6 includes: an aperture stop 4; a first lens 1 having positive refractive power, and at least one of the lens surfaces is aspherical; a second lens 2 having negative refractive power, and at least one of the lens surfaces is aspherical; and a third lens 3 having positive refractive power, and both lens surfaces are aspherical, arranged in that order from an object side to an image surface side. When f indicates the focal length of the entire optical system, f1 indicates the focal length of the first lens 1, f2 indicates the focal length of the second lens 2, r21 indicates the radius of curvature of the lens surface of the second lens 2 facing the object side, and n2 indicates the refractive index of the second lens 2, the following conditional expressions (1) to (3) are satisfied: 0.8

摘要翻译： 摄影镜头6包括：孔径光阑4; 具有正屈光力的第一透镜1，并且透镜表面中的至少一个是非球面的; 具有负屈光力的第二透镜2，并且透镜表面中的至少一个是非球面的; 和具有正屈光力的第三透镜3，并且两个透镜表面都是非球面的，从物体侧到像面侧依次排列。 当f表示整个光学系统的焦距时，f1表示第一透镜1的焦距，f2表示第二透镜2的焦距，r 21表示第二透镜2的透镜表面的曲率半径 物体侧，n2表示第二透镜2的折射率，满足以下条件式（1）〜（3）：0.8

公开(公告)号：US20100188758A1

公开(公告)日：2010-07-29

申请号：US12446542

申请日：2008-02-19

申请人： Takumi Iba ,  Nami Nagamori

发明人： Takumi Iba ,  Nami Nagamori

IPC分类号： G02B13/18

CPC分类号： G02B13/0035 ,  G02B9/16

摘要： A photography lens 6 includes: an aperture stop 4; a first lens 1 having positive refractive power, and at least one of the lens surfaces is aspherical; a second lens 2 having negative refractive power, and at least one of the lens surfaces is aspherical; and a third lens 3 having positive refractive power, and both lens surfaces are aspherical, arranged in that order from an object side to an image surface side. When f indicates the focal length of the entire optical system, f1 indicates the focal length of the first lens 1, f2 indicates the focal length of the second lens 2, r21 indicates the radius of curvature of the lens surface of the second lens 2 facing the object side, and n2 indicates the refractive index of the second lens 2, the following conditional expressions (1) to (3) are satisfied: 0.8

摘要翻译： 摄影镜头6包括：孔径光阑4; 具有正屈光力的第一透镜1，并且透镜表面中的至少一个是非球面的; 具有负屈光力的第二透镜2，并且透镜表面中的至少一个是非球面的; 和具有正屈光力的第三透镜3，并且两个透镜表面都是非球面的，从物体侧到像面侧依次排列。 当f表示整个光学系统的焦距时，f1表示第一透镜1的焦距，f2表示第二透镜2的焦距，r 21表示第二透镜2的透镜表面的曲率半径 物体侧，n2表示第二透镜2的折射率，满足以下条件式（1）〜（3）：0.8

公开(公告)号：US08070304B2

公开(公告)日：2011-12-06

申请号：US11813462

申请日：2006-01-13

申请人： Kouichiro Matsuoka ,  Nobuo Yamashita ,  Hirohiko Ina ,  Nami Nagamori ,  Masatoshi Yamashita

发明人： Kouichiro Matsuoka ,  Nobuo Yamashita ,  Hirohiko Ina ,  Nami Nagamori ,  Masatoshi Yamashita

IPC分类号： G02B27/00

CPC分类号： G02B7/022 ,  G02B5/005 ,  G02B13/003

摘要： A lens unit including a first lens including a first lens section having a first optical axis along which light passes, and a second lens. The second lens includes a second lens section having a second optical axis along which light passes, and a flange provided at the outer circumferential part of the second lens section and having a surface opposed to the first lens, and a tubular section extending from the flange in the direction of the second optical axis and having an inner side face opposed to the second lens section. The first lens is fitted in the tubular section and in contact with the inner side face of the tubular section of the second lens. The tubular section of the second lens has a plurality of protrusions protruding in the direction of the second optical axis and a plurality of valleys provided between the protrusions.

摘要翻译： 一种透镜单元，包括具有第一透镜部分的第一透镜，所述第一透镜部分具有光通过的第一光轴和第二透镜。 第二透镜包括具有光通过的第二光轴的第二透镜部分和设置在第二透镜部分的外圆周部分并具有与第一透镜相对的表面的凸缘，以及从凸缘延伸的管状部分 在第二光轴的方向上具有与第二透镜部相对的内侧面。 第一透镜安装在管状部分中并与第二透镜的管状部分的内侧面接触。 第二透镜的管状部分具有沿着第二光轴的方向突出的多个突起和设置在突起之间的多个谷。

公开(公告)号：US20090310223A1

公开(公告)日：2009-12-17

申请号：US11813462

申请日：2006-01-13

申请人： Kouichiro Matsuoka ,  Nobuo Yamashita ,  Hirohiko Ina ,  Nami Nagamori ,  Masatoshi Yamashita

发明人： Kouichiro Matsuoka ,  Nobuo Yamashita ,  Hirohiko Ina ,  Nami Nagamori ,  Masatoshi Yamashita

IPC分类号： G02B7/02 ,  G02B27/00 ,  G02B9/04

CPC分类号： G02B7/022 ,  G02B5/005 ,  G02B13/003

摘要： A camera lens unit includes a first lens including a first lens section having a first optical axis along which light runs, and a second lens. The second lens includes a second lens section having a second optical axis along which the light runs, a flange provided on an outer circumference of the second lens and having a surface facing the first lens, and a cylindrical section having an inner circumference extending from the flange along the second optical axis. The inner circumference of the cylindrical section faces the second lens section. The first lens contacts the inner circumference of the cylindrical section of the second lens and is engaged into the cylindrical section. The cylindrical section of the second lens includes plural protrusions protruding along the second optical axis, such that plural crenels are provided between the protrusions and have heights along the second optical axis lower than the protrusions. The camera lens unit prevents diffuse reflection caused by unnecessary incident light.

摘要翻译： 相机透镜单元包括第一透镜，其包括具有第一光轴的第一透镜部分和第二透镜。 第二透镜包括具有第二光轴的第二透镜部分，光沿着该光轴延伸，设置在第二透镜的外圆周上并具有面向第一透镜的表面的凸缘，以及具有从该第二透镜延伸的内圆周的圆柱形部分 法兰沿第二光轴。 圆筒部的内周面朝向第二透镜部。 第一透镜接触第二透镜的圆柱形部分的内圆周并且接合到圆柱形部分中。 第二透镜的圆筒部包括沿着第二光轴突出的多个突起，使得多个突起之间设置有多个突起，并且具有沿着第二光轴的高度低于突起。 相机镜头单元防止由不必要的入射光引起的漫反射。