ZOOM LENS AND IMAGING APPARATUS

To achieve a zoom lens small in size and having high optical performance in the whole zoom range, and an imaging apparatus.SOLUTION: The zoom lens of the present invention has, successively arranged from an object side to an image side, a first lens group having a negative refractive power, a second...

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Bibliographic Details
Main Author GYODA YUICHI
Format Patent
LanguageEnglish
Japanese
Published 25.04.2019
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:To achieve a zoom lens small in size and having high optical performance in the whole zoom range, and an imaging apparatus.SOLUTION: The zoom lens of the present invention has, successively arranged from an object side to an image side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group having a negative refractive power, in which upon zooming, an interval between adjoining lens groups varies. A focal distance f3 of the third lens group and a focal distance f4 of the fourth lens group satisfy a conditional expression of 0.80<f3/f4<5.00.SELECTED DRAWING: Figure 1 【課題】 小型で、全ズーム域において高い光学性能を有するズームレンズ及び撮像装置を実現すること。【解決手段】 本発明のズームレンズは、物体側から像側へ順に配置された、負の屈折力の第１レンズ群、正の屈折力の第２レンズ群、負の屈折力の第３レンズ群、負の屈折力の第４レンズ群を有し、ズーミングに際して隣り合うレンズ群の間隔が変化するズームレンズであって、前記第３レンズ群の焦点距離をｆ３、前記第４レンズ群の焦点距離をｆ４とするとき、０．８０＜ｆ３／ｆ４＜５．００の条件式を満たすことを特徴とする。【選択図】 図１
Bibliography:Application Number: JP20170191751