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    • 10. 发明授权
    • Zoom lens system, optical apparatus and method for manufacturing zoom lens system
    • 变焦镜头系统,光学装置及制造变焦镜头系统的方法
    • US08605362B2
    • 2013-12-10
    • US13033681
    • 2011-02-24
    • Tomoki Ito
    • Tomoki Ito
    • G02B15/14
    • G02B15/173G02B27/646
    • A zoom lens system includes, in order from an object side: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; a fourth lens group having negative refractive power; and a fifth lens group having positive refractive power. Upon zooming from a wide-angle end state to a telephoto end state, a position of the first lens group is fixed. At least a portion of any one of the lens groups is moved in a direction including a component perpendicular to an optical axis, and a given conditional expression is satisfied, thereby providing a zoom lens system capable of excellently suppressing variation in aberrations upon zooming and upon correcting an image blur, an optical apparatus including the zoom lens system, and a method for manufacturing the zoom lens system.
    • 变焦透镜系统从物体侧依次包括具有正折射光焦度的第一透镜组; 具有负屈光力的第二透镜组; 具有正折射力的第三透镜组; 具有负屈光力的第四透镜组; 以及具有正屈光力的第五透镜组。 当从广角端状态变焦到长焦端状态时,第一透镜组的位置是固定的。 任何一个透镜组的至少一部分在包括垂直于光轴的分量的方向上移动,并且满足给定的条件表达式,从而提供能够极好地抑制变焦和随后的像差变化的变焦透镜系统 校正图像模糊,包括变焦透镜系统的光学装置以及用于制造变焦透镜系统的方法。