发明名称 Zoom lens of the telephoto type and having four lens groups
摘要 In a zoom lens (ZL) having a plurality of lens groups which are disposed in order from the object, a first lens group (G1) has positive refractive power and comprises a light path bending element (P) and a plurality of lens components which are disposed closer to the object than the light path bending element, and the plurality of lens components comprises one negative lens the refractive index of which, with respect to d-line, is greater than 1.90.
申请公布号 EP1967883(A1) 申请公布日期 2008.09.10
申请号 EP20080250722 申请日期 2008.03.03
申请人 NIKON CORPORATION 发明人 TAKE, TOSHINORI
分类号 G02B5/04;G02B27/64;G02B15/173 主分类号 G02B5/04
代理机构 代理人
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