Laminated ophthalmic lens
    2.
    发明授权
    Laminated ophthalmic lens 失效
    层压眼科镜片

    公开(公告)号:US5312689A

    公开(公告)日:1994-05-17

    申请号:US20424

    申请日:1993-02-22

    IPC分类号: B32B27/38 G02C7/02

    摘要: An improved, laminated, ophthalmic lens structure, and method of producing the structure. The structure comprises two adjacent layers of dissimilar, organic plastic materials, either or both of which contain matter that tends to migrate. The improvement comprises a barrier layer that is intermediate the adjacent organic plastic layers; that is impermeable to migrating matter; and that is composed of a polyolefin polymeric material modified by the presence of acid or anhydride functional groups.

    摘要翻译: 改进的层压眼镜片结构及其制造方法。 该结构包括两层相互不同的有机塑料材料,其中一种或两种含有易于迁移的物质。 该改进包括位于相邻有机塑料层之间的阻挡层; 迁移物质是不可渗透的; 并且由通过存在酸或酸酐官能团改性的聚烯烃聚合物构成。