发明名称 Zoom lens of the telephoto-type and having five lens-groups
摘要 <p>A zoom lens includes, in order from an object side to an image side: a first lens unit having positive refractive power, which does not move for zooming, the first lens unit including a lens unit which moves for focusing; a second lens unit having negative refractive power for magnification variation; a third lens unit having negative refractive power, which moves for zooming; a fourth lens unit having positive refractive power, which moves for zooming; and a fifth lens unit having positive refractive power, which does not move for zooming, in which an interval between the fourth lens unit and the fifth lens unit becomes largest at a telephoto end, and lateral magnifications ²2w and ²2t of the second lens unit at a wide-angle end and at the telephoto end are respectively set appropriately.</p>
申请公布号 EP2620797(B1) 申请公布日期 2014.10.22
申请号 EP20130000367 申请日期 2013.01.24
申请人 CANON KABUSHIKI KAISHA 发明人 SAKAMOTO, MASARU
分类号 G02B15/173 主分类号 G02B15/173
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