发明名称 Zoom optical system
摘要 At least one exemplary embodiment is directed to a zoom optical system which includes a plurality of variable power optical units of which optical power varies accompanied by variable power, a fixed optical unit of which optical power does not vary accompanied by variable power, and a moving optical unit which moves accompanied by variable power.
申请公布号 US7443601(B2) 申请公布日期 2008.10.28
申请号 US20060453120 申请日期 2006.06.13
申请人 CANON KABUSHIKI KAISHA 发明人 YOSHIDA HIROFUMI;HATAKEYAMA KOSHI
分类号 G02B15/14 主分类号 G02B15/14
代理机构 代理人
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