Approach to compositional effect on properties of aspherical optical glass for GMP process with design of experiments

Abstract

In this study, the composition of optical glass for GMP(glass molding process) was designed with ‘Design of Experiments’ method. All the composition batch was performed by ‘Create Factorial Design’ method. Particularly, SiO_2, BaO and Al_2O_3 were chosen major parameters for investigating the effects of components on optical and thermal properties. BaO and Al_2O_3 strongly influenced on optical and thermal properties, respectively. Finally, the approximate values of desired optical and thermal values were obtained by microtuning of compositions. At the composition of BaO:Al_2O_3:SiO_2=10:4:48 (molar ratio), refractive index(nd) was 1.5833, coefficient of thermal expansion(CTE) was 104×10^-7/℃.