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CN100593022C 光学玻璃 失效 - 权利终止 转让 复审申请

光学玻璃
摘要：
一种用于制作大型透射光学元件例如其厚度至少为100毫米的透镜的光学玻璃，它包含35-70wt%的SiO2、17-35wt%的Al2O3、3-17wt%P2O5、0-6wt%的Li2O、0.5-4wt%的MgO、0.5-3wt%的ZnO、最大为1wt%的CaO、最大为0.5wt%的BaO、0.5-6wt%的TiO2、0.1-3wt%的ZrO2、0.1-1wt%的Na2O、0-1wt%的K2O、最大为1wt%的精炼剂(As2O3、Sb2O3)以及最大为500ppm的其它杂质。并且，最多包括120ppm的Fe2O3。玻璃组分可以等于玻璃陶瓷Zerodur的组分，并且能够按照节约成本的方式制造大型透射光学元件，在He-Ne激光范围内具有最大透射率并且其CTE大约为3×10-6/K。
摘要（英）：

An optical glass for the manufacture of large transmission optics, such as lenses having a thickness of 100 millimeters or more, comprises 35 to 70 wt.-% SiO2, 17 to 35 wt.-% Al2O3, 3 to 17 wt.-% P2O5, 0 to 6 wt.-% Li2O, 0.5 to 4 wt.-% MgO, 0.5 to 3 wt.-% ZnO, a maximum of 1 wt.-% CaO, a maximum of 0.5 wt.-% BaO, 0.5 to 6 wt.-% TiO2, 0.5 to 3 wt.-% ZrO2, 0 to 1 wt.-% Na2O, 0 to 1 wt.-% K2O, a maximum of 1 wt.-% of refining agents (As2O3, SP2O3) and a maximum of 500 ppm of other contaminants. The glass composition may be equal to the composition of the glass ceramic Zerodur(R) and allows to manufacture large transmission optics in a cost-effective way, has a maximum of transmittance which is in the range of a He-Ne lasers and has a CTE of about 3.10<-6>/K.

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