发明名称 |
Barrier opening and closing apparatus |
摘要 |
A barrier opening and closing apparatus for opening and closing a barrier according to a rotation of a lens barrel containing an optical lens system comprises a ring member disposed rotatable about an optical axis of the optical lens system and adapted to open and close the barrier according to a rotation thereof, whereas the ring member forms a plurality of rotational force transmitting parts extending rearward therefrom in parallel to the optical axis so as to be engaged with the lens barrel. The ring member is directly rotated by way of the plurality of rotational force transmitting parts engaged with the lens barrel, so as to open and close the barrier, whereby the cost of apparatus can be cut down.
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申请公布号 |
US2001026407(A1) |
申请公布日期 |
2001.10.04 |
申请号 |
US20010820797 |
申请日期 |
2001.03.30 |
申请人 |
NISHIMURA SYUNJI;NOZAWA MASAYA;NOGUCHI YUKIO;NOZAWA MIEKO |
发明人 |
NISHIMURA SYUNJI;NOZAWA MASAYA;NOGUCHI YUKIO;NOZAWA MIEKO |
分类号 |
G02B7/02;G02B7/08;G03B11/04;G03B17/02;(IPC1-7):G02B7/02 |
主分类号 |
G02B7/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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