Study on Simulation and Optimization in Injection Molding of Plastic Aspherical Lens

• Main Authors: Tsai-Te Hsu, 許財得
• Other Authors: Wen-Long Dai
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/96701003301595303599

碩士 === 逢甲大學 === 機械工程學所 === 92 === ABSTRACT It is well known that the volume-shrinkage is able to affect the size precision of lens and the variation or deformation of surface-profile of lens may significantly vary the optical lens performance. Accordingly, the effects of injection-molding processing parameters on the volumetric shrinkage and surface-profile deformation of aspherical plastic-lens are studied by means of the use of Taguchi method used for determining important processing factors and the commercial software Moldflow used for the analysis of injection molding of plastics in this thesis. This study includes four issues as followings: (1) the determination of important factors for volumetric shrinkage by means of Taguchi analysis method, (2) the effects of specimen thickness and processing parameters on shrinkage behavior, (3) the effects of important parameters on the volumetric shrinkage and surface-profile variation, and (4) finding the optimized or acceptable processing parameters. The analysis and simulation scheme to identify the status of injection-molding processing of aspherical plastic lens is developed. Consequently, a methodology for obtaining the most favorable injection-molding process for aspherical lens is proposed.