发明名称 Zoom lens and image pickup apparatus having the same
摘要 <p>A zoom lens includes, in order from an object side to an image side, a first lens unit (L1) having a negative refractive power, a second lens unit (L2) having a positive refractive power, a focus lens unit (Lf) having a negative refractive power, configured to move in focusing, and a final lens unit (Limg) having a positive refractive power, disposed closest to the image side. The focus lens unit (Lf) and the final lens unit (Limg) are disposed so as to be adjacent to each other, each lens unit moves so that a distance between adjacent lens units changes in zooming, and a focal length of the final lens unit (fimg), a focal length of the focus lens unit (ff), and a focal length of an entire system at a wide-angle end (fw) are appropriately set. </p>
申请公布号 EP2693251(A3) 申请公布日期 2014.03.05
申请号 EP20130178330 申请日期 2013.07.29
申请人 CANON KABUSHIKI KAISHA 发明人 MAETAKI, SATOSHI
分类号 G02B15/177 主分类号 G02B15/177
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