发明名称 ZOOM LENS AND OPTICAL APPARATUS EQUIPPED THEREWITH
摘要 A zoom lens is provided with comprising a plurality of lens groups including, in order from an object, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3, and a fourth lens group G4, upon zooming from a wide-angle end state W to a telephoto end state T, a distance between the first lens group G1 and the second lens group G2 increasing, a distance between the second lens group G2 and the third lens group G3 decreasing, and the most image side lens group among the plurality of lens groups moving along an optical axis with a trajectory having convex shape facing the object side, and given conditional expressions being satisfied, thereby excellently correcting chromatic aberration in a farther away shooting range, capable of having excellent optical performance with being compact.
申请公布号 US2010033840(A1) 申请公布日期 2010.02.11
申请号 US20080528448 申请日期 2008.02.08
申请人 SATO SUSUMU 发明人 SATO SUSUMU
分类号 G02B15/14;G02B27/64 主分类号 G02B15/14
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