发明名称 Zoom lens and image pickup apparatus equipped with same
摘要 A zoom lens includes a positive first lens unit G1, a negative second lens unit G2 and a rear group having a positive refracting power having at least one lens unit. The lens unit located closest to the object side in the rear grout is a third lens unit G3 having a positive refracting power. The zoom lens has an aperture stop S disposed closer to the image side than the second lens unit G2 and closer to the object side than the lens surface located closest to the image side in the third lens unit G3. The zoom lens satisfies a prescribed conditional expression.
申请公布号 US7643224(B2) 申请公布日期 2010.01.05
申请号 US20080313808 申请日期 2008.11.24
申请人 OLYMPUS IMAGING CORP. 发明人 WATANABE MASAHITO
分类号 G02B15/14 主分类号 G02B15/14
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