发明名称 |
Glass-ceramic support for fusing and sagging ophthmalmic multifocal lenses |
摘要 |
There is disclosed a low expansion glass-ceramic substrate for supporting a glass multifocal lens assembly during a fusing or sagging heat treatment. The substrate has baked on its supporting surface a paint composed essentially of titania, alumina and a mica.
|
申请公布号 |
US4883525(A) |
申请公布日期 |
1989.11.28 |
申请号 |
US19880228455 |
申请日期 |
1988.08.05 |
申请人 |
CORNING INCORPORATED |
发明人 |
BUCKLEY, MILFORD L.;BURKE, HARRY L. |
分类号 |
C03B23/025;C03B23/22 |
主分类号 |
C03B23/025 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|