Abstract
Glasses with refractive index 1.60 – 1.65, density 2.80 – 3.08 g/cm3 and dispersion coefficient ≥ 45 have been developed on the basis of the system Na2O(K2O)–MgO–CaO–BaO–ZnO–B2O3–SiO2. These glasses are recommended for use in ophthalmologic lenses.
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