H-ZF72 optical glass and preparation method thereof


The invention discloses H-ZF72 optical glass and a preparation method thereof. The H-ZF72 optical glass is prepared from the following chemical components in parts by weight: 5 to 9 parts of NaPO3, 1 to 8 parts of Ba(PO3)3, 10 to 18.5 parts of TiO2, 42 to 55 parts of Nb2O5, 2 to 3.5 parts of KPO3, 0.15 to 0.36 part of K2CO3, 0.5 to 1.5 parts of SiO2 and 2 to 7 parts of B2O3. The H-ZF72 optical glass disclosed by the invention does not contain PbO, As2O3 and CdO which are greatly harmful to the environment; furthermore, the refractive index (nd) of the product is 1.92286 to 1.92310, and the abbe number (Vd) is 18.00 to 19.00. The H-ZF72 optical glass is high in refractive index, high in melting performance, easy to form, stable in optical constant and high in consistency; without expensive components such as Ta2O5, Bi2O3 and GeO2, the H-ZF72 optical glass is relatively low in cost and can well meet the market demand for optical glass.




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