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1. 发明专利

JP2004226487A Imaging lens 审中-公开
公开(公告)号：JP2004226487A
公开(公告)日：2004-08-12
申请号：JP2003011239
申请日：2003-01-20
申请人： Seiko Epson Corp , セイコーエプソン株式会社
发明人： MATSUO EIKI
IPC分类号： G02B9/16 , G02B13/00 , G02B13/18
CPC分类号： G02B9/16 , G02B13/003 , G02B13/0035
摘要： PROBLEM TO BE SOLVED: To provide a bright small-sized inexpensive imaging lens system capable of attaining a viewing angle of >30°, whose whole length is shortened, and wherein various kinds of aberration are satisfactorily corrected.
SOLUTION: The imaging lens is constituted of a 1st positive lens convex to the object side, an aperture diaphragm arranged on the object side or on the image side of the 1st lens, a meniscus 2nd lens concave to the object side, and a meniscus 3rd lens convex to the object side in this order from the object side, besides, at least one of the 1st lens and the 2nd lens includes an aspherical surface, and both surfaces of the 3rd lens are aspherical. Besides, the 2nd lens has a paraxial focal distance whose sign is different from that of the 3rd lens, and when the maximum Abbe's number in the lenses is expressed by vmax and the minimum Abbe's number is expressed by vmin, 1.25

2. 发明专利

JP2003329920A Image pickup lens and camera module 有权
标题翻译：图像摄影镜头和摄像机模块
公开(公告)号：JP2003329920A
公开(公告)日：2003-11-19
申请号：JP2002136253
申请日：2002-05-10
申请人： Seiko Epson Corp , セイコーエプソン株式会社
发明人： NINOMIYA NOBORU , YAMAGUCHI NAOHISA , MATSUO EIKI
IPC分类号： G02B13/00 , G02B3/02 , G02B13/18
CPC分类号： G02B3/02
摘要： PROBLEM TO BE SOLVED: To provide a bright, compact and inexpensive image pickup lens system which is adaptable to an angle of view exceeding 30°, in which the incident angle on an image pickup device is made small, whose entire length is short and whose aberration is excellently corrected.
SOLUTION: As for a positive lens which has an aperture diaphragm on the object side and whose image surface side is a convex surface, at least its surface on the image surface side is aspherical. When it is assumed that a focal distance is (f), a distance from a disphragm to the front surface of the lens is D0, and the thickness of the lens is D1, the lens satisfies respective conditions; 0.2
摘要翻译：要解决的问题：为了提供一种适合于超过30°的视角的明亮，紧凑和便宜的图像拾取镜头系统，其中图像拾取装置上的入射角度小，其整个长度是短而且其差异被很好地纠正。解决方案：对于在物体侧具有孔径光阑并且其像面侧为凸面的正透镜，至少在像面侧的表面为非球面。当假设焦点距离为（f）时，从镜头的双面到前表面的距离为D0，透镜的厚度为D1，透镜满足各自的条件; 0.2

3. 发明专利

JP2003329922A Image pickup lens 审中-公开
标题翻译：图像摄影镜头
公开(公告)号：JP2003329922A
公开(公告)日：2003-11-19
申请号：JP2002136255
申请日：2002-05-10
申请人： Seiko Epson Corp , セイコーエプソン株式会社
发明人： NINOMIYA NOBORU , YAMAGUCHI NAOHISA , MATSUO EIKI
IPC分类号： G02B9/04 , G02B13/00 , G02B13/18
CPC分类号： G02B13/003 , G02B9/04 , G02B13/006 , G02B13/18
摘要： PROBLEM TO BE SOLVED: To provide a bright, compact and inexpensive image pickup lens system which is adaptable to an angle of view being about 30°, in which the incident angle on an image pickup device is made small, especially whose entire length is short and whose aberration is excellently corrected. SOLUTION: The image pickup lens is constituted of an aperture diaphragm, a 1st lens being a meniscus lens whose surface on an object side is convex, and a 2nd lens being a meniscus lens whose surface on the object side is convex and whose both surfaces are aspherical from the object side. When it is assumed that the focal distance of the entire system is (f), the focal distance of the 2nd lens is f2, the paraxial radius of curvature of the image surface side of the 1st lens is R2 and the paraxial radius of curvature of the surface on the object side of the 2nd lens is R3, the lens satisfies conditions; 0.2 COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供一种明亮，紧凑和便宜的图像拾取镜头系统，其适应于大约30°的视角，其中使图像拾取装置上的入射角变小，特别是其整个长度短，其畸变得到很好的校正。解决方案：图像拾取透镜由孔径光阑构成，第一透镜是物体侧的表面为凸面的弯月形透镜，第二透镜为物镜侧的表面为凸面的弯月形透镜，两个表面都是物体侧的非球面。当假设整个系统的焦距为（f）时，第二透镜的焦距为f2，第一透镜的图像表面侧的近轴曲率半径为R2，近轴曲率半径为第二透镜的物体侧的表面为R3，透镜满足条件; 0.2

4. 发明专利

JP2003329921A Image pickup lens 审中-公开
标题翻译：图像摄影镜头
公开(公告)号：JP2003329921A
公开(公告)日：2003-11-19
申请号：JP2002136254
申请日：2002-05-10
申请人： Seiko Epson Corp , セイコーエプソン株式会社
发明人： NINOMIYA NOBORU , YAMAGUCHI NAOHISA , MATSUO EIKI
IPC分类号： G02B13/00 , G02B3/02 , G02B13/18
CPC分类号： G02B13/003 , G02B3/02 , G02B13/001 , G02B13/18
摘要： PROBLEM TO BE SOLVED: To provide a bright, compact and inexpensive image pickup lens system which is adaptable to an angle of view exceeding 30°, in which the incident angle on an image pickup device is made small, whose entire length is short and whose aberration is excellently corrected.
SOLUTION: The image pickup lens is constituted of an aperture diaphragm, a biconvex positive lens, and a meniscus lens whose surface on an object side is concave from the object side, and respective lenses have at least one aspehrical surface.
COPYRIGHT: (C)2004,JPO

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