Lens molding has become the promising technique to conduct mass produce of aspheric glass lens. It overcomes some
disadvantages of traditional grinding or turning methods, such as high cost, low efficiency, unstable accuracy, and so on.
Up to now, the lens molding process has been looked on as one of the reliable methods in fabrication of aspheric glass
lens. However, in real production, one has found that it’s hard to control the molding parameters, e.g. molding
temperature, molding period, molding speed and pressing pressure, etc. Therefore it’s necessary to develop the specific
molding processes for a certain glass material. In this paper, SCHOTT P-SK57 is adopted to carry out the lens molding
analysis in order to achieve the relative processing parameters. The molding cases are analyzed based on three different
temperatures of 510°C, 520°C, and 530°C, higher than transition point 493°C of P-SK57. Through continuous heating
and pressing simulation, the results show that the best pressing temperature could be about 530°C, at which the residual
stress is only 5.22MPa (with the molding speed of 0.1mm/s).