Research on Improving the Second Pressing Quality of Asphere Lens

摘要

Optical elements are playing the important role in the modern world. In this paper, a new two-step isothermal glass molding process was proposed and the mechanisms were analyzed. Finite element simulation was conducted to analyze the key factors such as the pressing load, molding time and residual stress of lens. The results showed that the two-step isothermal glass lens molding process may decrease residual stress and improve stress and strain distribution and prolong the service life of dies.