Optical glass
An optical glass and glass technology, applied in the field of lanthanum silicate optical glass, can solve the problems of high price, damage to the glass network structure, deterioration of glass devitrification resistance and chemical stability, etc. The effect of good stability and low glass price
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[0035] Example
[0036] Examples 1 to 10 in Table 1 are typical experiments of the present invention to illustrate obtaining lanthanum silicate optical glasses with refractive index (nd) between 1.68 and 1.70 and Abbe number (vd) between 48 and 50. . Comparative Examples A, B and C are comparative embodiments with refractive indices between 1.68 and 1.70 and Abbe numbers between 48 and 50.
[0037] Calculate, weigh, and mix these raw materials according to the ratios provided in Table 1, and put the prepared batches into the smelting device (in view of the application requirements of the present invention, the smelting device needs to use a platinum crucible), and then take it at 1150 ° C ~ 1300 ° C. After smelting with appropriate stirring, clarification and cooling processes, pouring or leaking in the forming mold, and then post-processing such as annealing and processing, or directly pressing and forming through precision pressing technology, this environmentally friendly ...
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