发明名称 Optical apparatus
摘要 An optical apparatus comprises a zoom lens for effecting magnification change, a focusing lens for effecting focus adjustment, a first motor for moving the focusing lens, a second motor for moving the zoom lens, and detecting mechanism for detecting the reference positions of the focusing lens and the zoom lens, the detecting mechanism being used in common to the two lenses.
申请公布号 US5708870(A) 申请公布日期 1998.01.13
申请号 US19940188591 申请日期 1994.01.28
申请人 CANON KABUSHIKI KAISHA 发明人 SUGITA, JUN;KANEDA, NAOYA;NIIDA, MITSUO
分类号 G02B7/08;G02B7/10;G03B5/00;(IPC1-7):G03B1/18 主分类号 G02B7/08
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