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    • 6. 发明授权
    • Image pickup lens, image pickup apparatus, and mobile terminal
    • 摄像镜头,摄像装置和移动终端
    • US08427569B2
    • 2013-04-23
    • US12638837
    • 2009-12-15
    • Eigo Sano
    • Eigo Sano
    • G02B13/16
    • G02B15/14G02B13/0045G02B13/16H04N5/2254H04N5/23212H04N5/335
    • An image pickup lens includes: a first lens with a positive power, including a convex surface facing the object side; an aperture stop; a second lens with a negative power, including a concave surface facing the image side; a third lens with a positive or negative power; a fourth lens with a positive power, including a convex surface facing the image side; and a fifth lens with a negative power, including a concave surface facing the image side. The surface of the fifth lens facing the image side is an aspheric surface and includes an inflection point. The image pickup lens satisfies the predetermined condition relating to a focal length of the first lens.
    • 图像拾取透镜包括:具有正功率的第一透镜,包括面向物体侧的凸面; 孔径光阑; 具有负功率的第二透镜,包括面向图像侧的凹面; 具有正或负功率的第三透镜; 具有正功率的第四透镜,包括面向图像侧的凸面; 以及具有负功率的第五透镜,包括面向图像侧的凹面。 面向图像侧的第五透镜的表面是非球面并且包括拐点。 图像拾取透镜满足与第一透镜的焦距有关的预定条件。
    • 8. 发明授权
    • Image pickup lens, image pickup apparatus and mobile terminal
    • 摄像镜头,摄像设备和移动终端
    • US07535659B2
    • 2009-05-19
    • US11893180
    • 2007-08-15
    • Eigo Sano
    • Eigo Sano
    • G02B9/34G02B3/02G02B9/00
    • G02B9/34G02B13/004
    • The present invention provides an image pickup lens for forming a light flux from a subject into an image on a photo-electric converter of a solid image pickup element, and the image pickup lens includes, in order from an object side thereof: and aperture stop; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; and a fourth lens having a negative refractive power. The fourth lens includes a concave surface facing the object side and at least one optical surface has an aspheric shape in the fourth lens. The image pickup lens satisfies the predetermined condition according to a curvature radius of the surfaces of the fourth lens and a focal length.
    • 本发明提供了一种用于在固体摄像元件的光电转换器上形成从被摄体的光束到图像的图像拾取透镜,并且图像拾取透镜从其物体侧依次包括:孔径光阑 ; 具有正屈光力的第一透镜; 具有负屈光力的第二透镜; 具有正屈光力的第三透镜; 以及具有负屈光力的第四透镜。 第四透镜包括面向物体侧的凹面,并且至少一个光学表面在第四透镜中具有非球面形状。 图像拾取透镜根据第四透镜的表面的曲率半径和焦距来满足预定条件。