发明授权
- 专利标题: Method of making toric contact lenses
- 专利标题(中): 制作复曲面隐形眼镜的方法
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申请号: US511784申请日: 1990-04-20
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公开(公告)号: US5066431A公开(公告)日: 1991-11-19
- 发明人: Charles R. Briggs , Charles W. Neefe
- 申请人: Charles R. Briggs , Charles W. Neefe
- 专利权人: Briggs Charles R,Neefe Charles W
- 当前专利权人: Briggs Charles R,Neefe Charles W
- 主分类号: B29C41/04
- IPC分类号: B29C41/04 ; B29C41/36 ; B29D11/00
摘要:
The invention relates to a method of spin casting lenses having optical surfaces which may be spherical, aspherical or toric in shape. The method provides a concave optical mold having a spherical, aspherical or toric optical surface. A convex optical mold having a spherical, aspherical or toric surface is also privided. A selected liquid lens monomer with a selected catalyst is placed in the concave lens mold. The convex optical mold is positioned in the concave mold displacing the liquid lens monomer. The optical axis of the concave and convex molds are aligned and the two molds rotated about their concurrent optical axis. The liquid monomer is allowed to polymerize forming a solid polymer lens. The finished lens is then removed from the molds.
公开/授权文献
- US5680951A Flow control cover for a cup 公开/授权日:1997-10-28