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US 4,229,220 AGranted
Edge-coating glass for laser disks
AssigneeHoya Corporation
InventorShinichiro Hirota
Life of this patent
Estimating the term…
Abstract
A glass for coating a laser glass and which has a high absorption for laser light which comprises, in mol %, 51 to 59% P.sub.2 O.sub.5 ; 0 to 8% B.sub.2 O.sub.3 ; 4 to 10% Al.sub.2 O.sub.3 ; 0 to 20% Li.sub.2 O; 0 to 17% Na.sub.2 O; 8 to 20% Li.sub.2 0+Na.sub.2 O; 0 to 23% ZnO; 0 to 15% BaO; 7 to 28% CuO; and 0 to 13% V.sub.2 O.sub.5.
Claims1
A glass for coating a laser glass, having a high absorption for laser light consisting essentially of, in mol %, 51 to 59 % P.sub.2 O.sub.5 ;
- 0 to 8% B.sub.2 O.sub.3 ;
- 4 to 10% Al.sub.2 O.sub.3 ;
- 0 to 19% Li.sub.2 O;
- 0 to 16.5% Na.sub.2 O;
- 8.5 to 19% Li.sub.2 O+Na.sub.2 O;
- 0 to 23% ZnO;
- 0 to 14.5% BaO;
- 7.5 to 28% CuO;
- and 0 to 12.5% V.sub.2 O.sub.5.
6 more elements
Dependencies are inferred from the claim text.