ガラスレンズのモールドプレスにおける最適成形条件の評価

抄録

Some experiments for press molding of glass spherical lens and its numerical simulation were carried out using finite element method. The optimal molding condition of slow cooling time that gives appropriate transcription profile was examined experimentally. Moreover, in order to investigate the temperature and internal stress distributions, numerical simulation was carried out using general purpose finite element code. As a result of comparing experiments with numerical simulations, it was confirmed that the relationship between amount of shrink of spherical lens and slow cooling time estimated by FE simulation approximately agreed with experimental value. Furthermore, it was found out that the optimal slow cooling time was 300-600 s by FE analyses.