模造玻璃透鏡實驗設備改良與模造成形之研究

Abstract

光學玻璃相較於光學塑膠具有較佳的光學、機械及化學性質，隨著光電產品品質與技術的提升，使用玻璃作為光學元件材料的機會也隨之提高；然而光學玻璃透鏡在模造成形上因其高硬度、高成形溫度、脫模困難等特性，使得高成本開發出來的模仁壽命降低而無法達成大量轉印的目標。 本研究藉由設計新的熱壓成形設備來改善已有實驗設備中僅能在大氣環境下進行實驗的缺點，使用新建置的設備在真空環境下進行模造成形實驗後，成功的解決了硬膜層易脫落、劣化失效及與玻璃產生沾黏、表面反應等情形；並在搭配玻璃編號L-BAL42球狀光學玻璃預形體下進行實驗，探討不同硬膜層在模造成形時的差別，找出適合多次重複模造成形實驗的理想硬膜層與實驗參數。

Compared to optical plastics, optical glasses have better properties in optics, mechanics, and chemical resistances. As the quality and technique of photoelectric products are progressing, the chances of using glasses for optical element materials are rising. However, there exist some characteristics such as high hardness, high molding temperature, and mold sticking on optical glass lens molding. These characteristics lead to early break down of costly molds and therefore obstruct the use of glass lens molding in mass production. In this research, a new apparatus for hot embossing forming has been designed to overcome the drawbacks of existing experimental apparatus which works in atmospheric condition only. The use this new apparatus for glass molding experiment in vacuum condition successfully solved forming problems such as coatings’ peeling off, losing efficacy, sticking with glass, and mutual reactions between glass and mold. Also, The influences of different coatings on glass molding have been investigated using this apparatus, suitable molding parameters and coatings have been obtained for repeated glass molding process.