Claims
- 1. A Faraday rotation glass consisting essentially of in mole %,
- ______________________________________P.sub.2 O.sub.5 5 to 30% where up to 5/6 on a molar basis of the P.sub.2 O.sub.5 can be replaced by B.sub.2 O.sub.3 ;TbF.sub.3 11.4 to 45%;AlF.sub.3 0 to 25%; andRF at least 40%______________________________________
- where RF includes at least 3% BaF.sub.2, 0 to 64% MgF.sub.2, 0 to 32% NaF, 0 to 40% SrF.sub.2, 0 to 26% CaF.sub.2, 0 to 20% LiF and 0 to 20% KF.
- 2. The glass of claim 1 containing up to 10 mole % NaF or up to 17 mole % BaF.sub.2.
Priority Claims (1)
Number |
Date |
Country |
Kind |
52-2717 |
Jan 1977 |
JPX |
|
Parent Case Info
This application is a continuation application of Ser. No. 967,766, filed Dec. 8, 1978 in turn a continuation application of Ser. No. 868,245, filed Jan. 10, 1978, both of which are now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3166673 |
Vickery et al. |
Jan 1965 |
|
3318652 |
Berger et al. |
May 1967 |
|
3320170 |
Vickery et al. |
May 1967 |
|
3656976 |
Izumitani |
Apr 1972 |
|
Continuations (2)
|
Number |
Date |
Country |
Parent |
967766 |
Dec 1978 |
|
Parent |
868245 |
Jan 1978 |
|