The invention relates to oxynitride glasses containing rare earths. The glasses consist essentially, in percentages by weight of the oxides, of approximately 35 to 72% of Ln 2 O 3, where Ln 2 O 3 consists of at least one rare earth metal oxide selected from the lanthanide series, 5 to 37% Al 2 O 3, 20 to 56% SiO 2 and 4 to 7.5% N. A proportion up to half of Ln2 O3, on an atomic basis, can be replaced by SrO and / or BaO. It is possible to form a transparent glass which contains about 40 to 60%, on a molar basis, of Ln 2 O 3 + SrO and / or BaO and in which the Sr and / or Ba: Sr and / or Ba + Ln atomic ratio is greater than 0.4. / P
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机译：本发明涉及一种含有稀土的氧氮化物玻璃。所述玻璃基本上按氧化物的重量百分比构成约35-72％的Ln 2 O 3，其中Ln 2 O 3由至少一种选自镧系元素的稀土金属氧化物，5-37％Al组成。 2 O 3，20％至56％的SiO 2和4％至7.5％的N。按原子计算，最多占一半的Ln2 O3可以被SrO和/或BaO代替。可以形成一种透明玻璃，该玻璃的摩尔含量为Ln 2 O 3 + SrO和/或BaO约40％至60％，并且其中Sr和/或Ba为Sr和/或Ba + Ln原子比大于0.4。
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