发明名称 Zoom lens system and image pickup apparatus including the same
摘要 At least one exemplary embodiment is directed to a zoom lens system having a telephoto-type configuration at the telephoto end. When assuming that an Abbe number is vd, and a partial dispersion ratio is thetagF, this zoom lens system includes a refractive optical element having positive refracting power made up of a solid material that can satisfy the following conditi
申请公布号 US7304805(B2) 申请公布日期 2007.12.04
申请号 US20060453192 申请日期 2006.06.13
申请人 CANON KABUSHIKI KAISHA 发明人 ENDO HIROSHI;OBU KENJI
分类号 G02B15/14 主分类号 G02B15/14
代理机构 代理人
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