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    • 8. 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。
    • 10. 发明申请
    • ZOOM LENS SYSTEM, OPTICAL APPARATUS, AND METHOD FOR MANUFACTURING ZOOM LENS SYSTEM
    • 变焦镜头系统,光学设备和制造变焦镜头系统的方法
    • US20090086321A1
    • 2009-04-02
    • US12211900
    • 2008-09-17
    • Keiko MIZUGUCHITomoki Ito
    • Keiko MIZUGUCHITomoki Ito
    • G02B27/64G02B15/16
    • G02B27/646G02B15/173
    • Providing a zoom lens system having a vibration reduction function capable of performing quick focusing with excellent optical performance even upon vibration reduction. The system including, in order from an object, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, and a fourth lens group G4 having positive refractive power. Upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2 varies, and a distance between the second lens group G2 and the third lens group G3 varies. The third lens group G3 carries out focusing from an infinity object to a close object. At least a portion of the fourth lens group G4 moves in a direction perpendicular to the optical axis.
    • 提供具有减振功能的变焦透镜系统,即使在减振时也能够进行快速聚焦,具有出色的光学性能。 该系统依次包括具有正折光力的第一透镜组G1,具有负折光力的第二透镜组G2,具有正折光力的第三透镜组G3和具有正折光力的第四透镜组G4 。 在从广角端状态变焦到望远端状态时,第一透镜组G1和第二透镜组G2之间的距离变化,并且第二透镜组G2与第三透镜组G3之间的距离变化。 第三透镜组G3从无限远物体执行聚焦到近距离物体。 第四透镜组G4的至少一部分在垂直于光轴的方向上移动。