FLUOROPHOSPHATE OPTICAL GLASS Russian patent published in 1995 - IPC

Abstract RU 2031090 C1

FIELD: optical industry. SUBSTANCE: fluorophosphate optical glass has, wt.-%: aluminium phosphate 30-45; barium phosphate 0.5-5; magnesium fluoride 5-10; strontium fluoride 1.5-12; barium fluoride 0.5-15; barium oxide 32-50; aluminium oxide 0.5-2; silicon oxide 0.2-1.75. Glass can contain tantalum oxide (0.5-5 wt.-%). Crystallizability of glass for 3 h at 300-800 C is 1; n_l = 1.59548-1.61553. EFFECT: enhanced quality of glass. 2 cl, 1 tbl

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RU 2 031 090 C1

Authors

Buzhinskij I.M.

Kozhevatkin S.G.

Molev V.I.

Dates

1995-03-20—Published

1992-03-16—Filed