发明名称 Zoom lens of rear focus type.
摘要 <p>A zoom lens of the rear focus type is disclosed, comprising, in the order from the object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, a fourth lens unit having a positive refractive power, and a fifth lens unit having a negative refractive power, wherein zooming is performed by moving the second and fourth lens units, and focusing is performed by moving the fourth lens unit. &lt;IMAGE&gt;</p>
申请公布号 EP0506108(A1) 申请公布日期 1992.09.30
申请号 EP19920105349 申请日期 1992.03.27
申请人 CANON KABUSHIKI KAISHA 发明人 HAMANO, HIROYUKI;SATOH, HIROSHI
分类号 G02B15/173 主分类号 G02B15/173
代理机构 代理人
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