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发明公开
CN104386911A 光学玻璃 无效 - 驳回

光学玻璃
摘要：
本发明提供一种以SiO2、B2O3、BaO、La2O3为主要成分的，不含铅、钍、镉、铋、砷、氟的镧火石光学玻璃。折射率(nd)在1.71～1.73之间，阿贝数(υd)在46～49之间。具有析晶性能好、适宜生产的特点。按照GB/T7962.12-2010的方法测试，对10mm厚的试样，其内部透过率τ10在360nm处可达85％以上。玻璃着色度λ80/λ5可达到380/330以下。玻璃比重在4.20g/cm3以下。按照JB/T10576-2006的方法测试，其耐水性(DW)为1级，耐酸性(DA)为3级以上。以化合物的质量百分比含量计，所述光学玻璃包含：SiO2：21～24％、B2O3：8～12％、La2O3：15～20％、ZrO2：4～6％、BaO：30～35％、SrO：4～7％、Li2O：0.1～2％、Nb2O5：2～6％、TiO2：0～0.5％、ZnO：1～4％、Sb2O3：0～0.5％，以上成分总含量为100％。
摘要（英）：

The invention provides lanthanum flint optical glass. The lanthanum flint optical glass takes SiO2, B2O3, BaO and La2O3 as main components and does not contain lead, thorium, cadmium, bismuth, arsenic and fluorine; refractive index (nd) is 1.71-1.73, and abbe number (upsilond) is 46-49; the lanthanum flint optical glass has the characteristics of good crystallization property and high suitability for production; testing is carried out according to a method in GB/T7962.12-2010, and interior transmittance Tau10 of a tested sample which is 10mm thick can be more than 85%; glass pigmentation degree lambda80/lambda5 can be less than 380/330; glass specific gravity is less than 4.20g/cm<3>; testing is carried out according to a method in JB/T10576-2006, grade of degree of water resistance (DW) of a tested sample is 1, and grade of degree of acid resistance (DA) is more than 3. The lanthanum flint optical glass comprises the following components in percentage by mass: 21-24% of SiO2, 8-12% of B2O3, 15-20% of La2O3, 4-6% of ZrO2, 30-35% of BaO, 4-7% of SrO, 0.1-2% of Li2O, 2-6% of Nb2O5, 0-0.5% of TiO2, 1-4% of ZnO and 0-0.5% of Sb2O3, wherein the total content of the components is 100%.

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