发明授权
- 专利标题： Plastic lens and production method thereof
- 专利标题（中）： 塑料透镜及其制造方法
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申请号： US09740818申请日： 2000-12-21
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公开(公告)号： US06466376B2公开(公告)日： 2002-10-15
- 发明人: Toshiyuki Koshimizu , Kazuo Ishida , Etsuzo Kurihara
- 申请人： Toshiyuki Koshimizu , Kazuo Ishida , Etsuzo Kurihara
- 优先权： JP11-366150 19991224
- 主分类号： G02B300
- IPC分类号： G02B300
摘要：
A plastic lens molded through a gate in a molding process has a gate-located portion on an outer peripheral surface of the plastic lens, and a concave surface provided on at least a part of the gate-located portion.
公开/授权文献
- US20010007513A1 Plastic lens and production method thereof 公开/授权日：2001-07-12
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