发明名称 Detachable lens apparatus, camera system and camera for accurate automatic focusing using two driving mechanisms
摘要 Provided are a lens apparatus and an optical apparatus having the same, the lens apparatus including a lens holding member holding a lens, a supporting member for supporting the lens holding member movably in the direction of the optical axis of the lens, a first drive mechanism for moving the supporting member in the direction of the optical axis, and a second drive mechanism for moving the lens holding member in the direction of the optical axis, wherein a focusing lens can be moved to an in-focus position within a short time and highly accurately by an AF system.
申请公布号 US7515199(B2) 申请公布日期 2009.04.07
申请号 US20050044833 申请日期 2005.01.26
申请人 CANON KABUSHIKI KAISHA 发明人 KAWAI TOHRU;ISHIKAWA MASANORI;KASHIWABA SEIICHI;SHINOHARA MITSURU;SATO SHIGEKI;NAGAO YUKI
分类号 G02B7/08;H04N5/232;G02B7/04;G03B13/00;H04N5/225 主分类号 G02B7/08
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