发明名称 Light shielding structure of a zoom lens barrel
摘要 A light shielding structure of a zoom lens barrel includes an outer ring, an intermediate ring and an inner ring which are concentrically arranged, the intermediate ring being movable relative to the outer ring and including at least one through-slot, the inner ring being movable relative to the intermediate ring, and the inner ring including at least one projection which is formed on an outer peripheral surface of the inner ring to be engaged in the through-slot. The light shielding structure is in the form of a light shielding sheet including a fixing portion which is fixed to the inner ring, and at least one resilient light-shielding tongue which projects radially outwards from the fixing portion to pass through the through-slot so that a radially outer end portion of the resilient light-shielding tongue comes in contact with an inner peripheral surface of the outer ring.
申请公布号 US2006034595(A1) 申请公布日期 2006.02.16
申请号 US20050198228 申请日期 2005.08.08
申请人 PENTAX CORPORATION 发明人 YAMAZAKI YOSHIHIRO;KOGURE YUJI
分类号 G03B17/00 主分类号 G03B17/00
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