发明名称 ズームレンズ、撮像装置
摘要 PROBLEM TO BE SOLVED: To provide a zoom lens with high optical performance capable of excellently correcting various aberrations including the secondary spectrum of chromatic aberration over the entire zoom range, and to provide an imaging apparatus and a method for manufacturing the zoom lens.SOLUTION: The zoom lens comprises, in order from an object side along the optical axis: a first lens group having positive refractive power; a second lens group having negative refractive power; and a rear group including one or more lens groups. When varying power from a wide angle end to a telephoto end, the distance between the first lens group and the second lens group changes. The second lens group comprises a plurality of lenses including a negative lens and a positive lens. At least one of the negative lenses satisfies the following conditional expressions: 60.0<&ngr;dn, and &thetas;gFn-(0.644-1.68×10×&ngr;dn)>0.000, where &ngr;dn is the Abbe number of the material of the negative lens, and the &thetas;gFn is the partial dispersion ratio of the material of the negative lens.
申请公布号 JP5958018(B2) 申请公布日期 2016.07.27
申请号 JP20120080321 申请日期 2012.03.30
申请人 株式会社ニコン 发明人 藤本 誠
分类号 G02B15/20 主分类号 G02B15/20
代理机构 代理人
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