发明名称 Zoom lens having plastic lens in first lens group
摘要 A zoom lens having a plurality of lens groups, includes: a first lens group including a plurality of lenses, provided closest to an object side, wherein a first lens made of a plastic lens having a positive refracting power is located closest to the object side among the plurality of lenses in the first lens group.
申请公布号 US6038081(A) 申请公布日期 2000.03.14
申请号 US19980074590 申请日期 1998.05.08
申请人 KONICA CORPORATION 发明人 SATO, HIROSHI
分类号 G02B13/18;G02B15/173;(IPC1-7):G02B15/14 主分类号 G02B13/18
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