非球面光學玻璃模造技術除了需有精密的模造機台、非球面模仁加工的技術、最佳化的模造參數等能力外；對於如何延長模仁的使用壽命，使模造生產成本降低，因此抗沾黏膜的鍍膜參數，將是最重要的關鍵。最終之目的在利用抗沾黏薄膜輔助模仁材料，提高模仁壽命、抵抗沾黏及改善模仁與光學玻璃界面化學擴散反應，並探討各種抗沾黏膜層與光學玻璃之界面化學擴散反應。 各種光學玻璃與不同鍍膜設計參數之界面化學反應與沾黏程度皆有所差異，本研究中發現光學玻璃預形體的表面精度及組成成份中含活性較大之元素，於高溫狀態下較易與保護膜層元素相互擴散進而產生界面化學反應。而根據金屬元素的氧化電位，可發現光學玻璃組成成份元素活性越大經過高溫反應後，越易與模仁發生相互界面化學擴散反應，使彼此相互沾黏的情形發生。除此之外抗沾黏膜層之厚度、層數及設計上的改變皆會影響膜層於高溫反應後之壽命，而利用膜層設計參數的改變及加入有效之抗擴散阻隔層可以有效避免界面化學擴散反應，進而提高膜層壽命與光學玻璃成品良率提高。 Glass molding process(GMP) is regarded as a very promising technique for mass producing high precision optical components such as spherical/ aspheric glass lenses and free-form optics. However, only a handful of materials can sustain the chemical reaction, mechanical stress and temperature involved in the glass molding process. Besides, almost all of these mold materials are classified as hard-to-machine materials. This makes the machining of these materials to sub-micrometer form accuracy and nanometer surface finish a rather tough and expensive task. As a result, making mold life longer has become extremely critical in the GMP industry. The interfacial chemical reaction between optical glass and mold is normally the main reason for pre-matured mold failure. This research aimed to investigate the interfacial chemical reaction between various optical glasses, different anti-stick coating designs and several mold materials. The results showed that glass composition, coating design (composition, microstructure, thickness..), environment (vacuum, air or in protective gas), reaction temperature and time could all have profound effects on the interfacial chemical reaction. Based on the results, a design developed specially for certain glasses is more likely to be the viable way of optimizing the effect of the protective coating.
