Thallium-containing optical glass
    51.
    发明授权
    Thallium-containing optical glass 失效
    含铊光学玻璃

    公开(公告)号:US4495298A

    公开(公告)日:1985-01-22

    申请号:US377246

    申请日:1982-05-11

    摘要: A thallium-containing optical glass composition which comprises the following oxides in the indicated proportions in mole %: SiO.sub.2 35-80, Tl.sub.2 O 1-30, Tl.sub.2 O+R.sub.2 O (R being an alkali metal) 1-35, ZnO 0-35, GeO.sub.2 0-30, BaO 0-25, TiO.sub.2 0-20, MgO 0-20, B.sub.2 O.sub.3 0-less than 10, ZrO.sub.2 0-2, Al.sub.2 O.sub.3 0-8, SnO 0-5, CaO 0-10, SrO 0-10, PbO 0-10, La.sub.2 O.sub.3 0-5, Bi.sub.2 O.sub.3 0-8, and Ta.sub.2 O.sub.5 0-2, and satisfies the following relations:5.ltoreq.ZnO+GeO.sub.2 +BaO+TiO.sub.2 +MgO+B.sub.2 O.sub.3 .ltoreq.40,0.1.ltoreq.ZrO.sub.2 +Al.sub.2 O.sub.3 +SnO.ltoreq.8,and0.ltoreq.CaO+SrO+PbO+La.sub.2 O.sub.3 +Bi.sub.2 O.sub.3 +Ta.sub.2 O.sub.5 .ltoreq.10.

    摘要翻译: 含有铊的光学玻璃组合物,其含有以摩尔%表示的比例的以下氧化物:SiO 2 35-80,T 1/2 O 1-30,T 10 O + R 20(R为碱金属)1-35,ZnO 0-35,GeO 2 0-30,BaO 0-25,TiO 2 0-20,MgO 0-20,B 2 O 0小于10,ZrO 2 0-2,Al 2 O 3 0-8,SnO 0-5,CaO 0-10,SrO 0-10 ,PbO 0-10,La 2 O 3 0-5,Bi 2 O 3 0-8和Ta 2 O 5 0-2,并且满足以下关系:5

    Cesium-containing optical glass
    52.
    发明授权
    Cesium-containing optical glass 失效
    含铯光学玻璃

    公开(公告)号:US4472030A

    公开(公告)日:1984-09-18

    申请号:US548787

    申请日:1983-11-04

    摘要: A cesium-containing optical glass comprising, by weight, 32-56% of SiO.sub.2, 6-25% of K.sub.2 O, 6-32% of Cs.sub.2 O, 0-30% of BaO, 0-2.5% of MgO, 5-34% of ZnO, 0-3% of ZrO.sub.2 and 0-5% of SnO.sub.2, provided that the total proportion of BaO, MgO and ZnO is 8-40% and the total proportion of ZrO.sub.2 and SnO.sub.2 is 0.2-6%. When this cesium-containing optical glass is treated in a molten bath containing potassium nitrate, the cesium ion in the glass is easily exchanged with a potassium ion and therefore, the cesium ion concentration gradually decreases radially outwardly from the central axis and the potassium ion concentration gradually increases in that direction. Thus, there is obtained a light converge-type lens in which the refractive index gradually decreases in the same direction.

    摘要翻译: 一种含铯的光学玻璃,其包含32-56%的SiO 2,6-25%的K 2 O,6-32%的Cs 2 O,0-30%的BaO,0-2.5%的MgO,5-34% 的ZnO,0-3%的ZrO2和0-5%的SnO2,条件是BaO,MgO和ZnO的总比例为8-40%,ZrO2和SnO2的总比例为0.2-6%。 当含有铯的光学玻璃在含有硝酸钾的熔浴中进行处理时,玻璃中的铯离子容易与钾离子交换,因此铯离子浓度从中心轴逐渐向径向外降,钾离子浓度 朝着这个方向逐渐增加。 因此,获得折射率在相同方向上逐渐减小的聚光型透镜。