首页> 外国专利> WIDE ANGLE LENS, OPTICAL EQUIPMENT WITH THE WIDE ANGLE LENS, AND METHOD FOR MANUFACTURING WIDE ANGLE LENS

WIDE ANGLE LENS, OPTICAL EQUIPMENT WITH THE WIDE ANGLE LENS, AND METHOD FOR MANUFACTURING WIDE ANGLE LENS

机译:广角镜,具有广角镜的光学设备以及制造广角镜的方法

摘要

PROBLEM TO BE SOLVED: To provide a wide angle lens whose size is small, respective aberrations are satisfactorily corrected, and optical performance is excellent, to provide optical equipment that has the wide angle lens, and to provide a method for manufacturing the wide angle lens.;SOLUTION: The wide angle lens WL mounted to an electronic still camera 1 or the like includes, in an order from an object side: a first lens L1 composed of a negative meniscus lens whose convex face is oriented toward the object side; a jointed lens component CL1 which is formed by jointing a second lens L2 having positive refractive power and a third lens L3 having negative refractive power, and has positive refractive power as a whole; a fourth lens L4 having negative refractive power; a fifth lens L5 having positive refractive power; and a sixth lens L6 having positive refractive power. When an air interval on an axis between the first lens L1 and the second lens L2 is d2, and the focal distance of the first lens L1 on a d-line is f1, the wide angle lens satisfies the following expression: 0.01d2/(-f1)0.15.;COPYRIGHT: (C)2011,JPO&INPIT
机译:解决的问题:提供一种小尺寸的广角镜,令人满意地校正各个像差,并且光学性能优异,提供一种具有该广角镜的光学设备,并提供一种制造该广角镜的方法。解决方案:安装到电子静态照相机1等上的广角镜头WL从物体侧开始依次包括:第一透镜L1,该第一透镜L1由负弯月形透镜构成,其凸面朝向物体侧。接合透镜部件CL1,其通过将具有正屈光力的第二透镜L2和具有负屈光力的第三透镜L3接合而形成,并且整体上具有正屈光力。具有负屈光力的第四透镜L4;具有正屈光力的第五透镜L5;具有正屈光力的第六透镜L6。当第一透镜L1和第二透镜L2之间的轴上的空气间隔为d2,并且第一透镜L1在d线上的焦距为f1时,广角镜满足以下表达式:0.01

著录项

  • 公开/公告号JP2011059288A

    专利类型

  • 公开/公告日2011-03-24

    原文格式PDF

  • 申请/专利权人 NIKON CORP;

    申请/专利号JP20090207778

  • 发明设计人 OSHITA KOICHI;

    申请日2009-09-09

  • 分类号G02B13/04;G02B13/18;

  • 国家 JP

  • 入库时间 2022-08-21 18:23:03

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