发明名称 Lens barrel and optical apparatus
摘要 A lens barrel showing a satisfactory property in assembly and a high dust-proof and drip-proof performance includes: a first member; a lens holding frame configured to hold lens units moving in an optical axis direction to either zoom or focus the lens units; and an elastic member held between respective optical-axis-orthogonal surfaces of the first member and the lens holding frame, wherein the elastic member can be compressed in the optical axis direction during a zooming or focusing operation.
申请公布号 US8320055(B2) 申请公布日期 2012.11.27
申请号 US201113184848 申请日期 2011.07.18
申请人 YAMANAKA TAKUMI;CANON KABUSHIKI KAISHA 发明人 YAMANAKA TAKUMI
分类号 G02B15/14;G02B7/02 主分类号 G02B15/14
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