ズームレンズ及びそれを有する撮像装置

Zoom lens and imaging apparatus having the same

Abstract

PROBLEM TO BE SOLVED: To provide a zoom lens which effectively reduces flare light, has a wide angle of view and is compact as a whole.SOLUTION: In the zoom lens which has a first lens group L1 having positive refractive power, a second lens group L2 having negative refractive power, a third lens group L3 having positive refractive power, and a fourth lens group L4 having positive refractive power in order from an object side to an image side, and in which when the zoom lens zooms, the first group is immovable, and the second lens group, the third lens group and the fourth lens group move, a flare-cut diaphragm FC having a fixed aperture diameter is provided between the second lens group and the third lens group, and the flare-cut diaphragm moves when the zoom lens zooms.
【課題】フレア光を効果的に軽減しつつ、広画角で全体がコンパクトなズームレンズを得ること。 【解決手段】物体側より像側へ順に、正の屈折力の第1レンズ群L1、負の屈折力の第2レンズ群L2、正の屈折力の第3レンズ群L3、正の屈折力の第4レンズ群L4より構成され、ズーミングに際して、第1レンズ群は不動で、第2レンズ群と第3レンズ群と第4レンズ群が移動するズームレンズにおいて、第2レンズ群と第3レンズ群との間に開口径が固定のフレアカット絞りFCを有し、フレアカット絞りはズーミングに際して移動すること。 【選択図】図1

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    JP-2014174524-ASeptember 22, 2014Canon Inc, キヤノン株式会社Zoom lens and image capturing device having the same