評估高折射率低玻璃轉移溫度Bi2O3-P2O5-GeO2/B2O3玻璃模造之可行性

Evaluation of molding ability of high refractive index, low glass transition temperature Bi2O3-P2O5-GeO2/B2O3 glasses

王千瑞(Chien-Jui Wang)

指導教授 ： 徐錦志

大同大學/工程學院/材料工程學系所/碩士(2012年)

摘要

模造製程可用於製造非球面透鏡。而高折射率的光學玻璃鏡片可以減少玻璃的體積，廣泛應用於手機、攝影鏡頭等訴求輕薄短小的可攜式裝置。相較其他常見的光學玻璃，鉍酸鹽玻璃具有低玻璃轉移溫度及高折射率。
本研究選用Bi2O3-P2O5-GeO2(A系統)及Bi2O3-P2O5-B2O3(B系統)兩種玻璃系統中具高折射率且低Tg的玻璃進行熱壓實驗，觀察固定黏度下加壓時玻璃的變形情形，且觀察與不同成份的玻璃熱壓得到的基板(碳化鎢及非晶質碳)，討論其沾黏的程度及原因。
另外玻璃在低於DTA起始結晶溫度下進行熱處理，以得該玻璃可進行的熱處理溫度及時間範圍。增加模造鉍酸鹽玻璃可能性的評估。

關鍵字

模造 ； 光學玻璃 ； 鉍酸鹽玻璃 ； 沾黏

並列摘要

Molding process makes aspherical lense. the refractive index optical glass can reduce the volume of glass where applied for weight loss, small and portable devices, like cell phones and lens. Compare to other common optical glasses, bismuthate glass has the property of low glass transition temperature and high refrative index.
In the research, the glasses which are chose from the glass systems Bi2O3-P2O5-GeO2(system A) and Bi2O3-P2O5-B2O3(system B) have been done hot pressure experiment. Fixed glass viscosity investigates deformation of the glasses. And the substrates(tungsten carbide and amorphous carbon)which is pressed with the difference composition glasses are investigated microstructures and discussed sticking degree and result.
Under the DTA onset crystalline temperature, the research tries to know the glass of the range of heat treatment condition (temperature and time) for evaluation of molding ability of the bismuthate glasses.

並列關鍵字

molding ； optical glass ； bismuthate glass ； sticking

參考文獻

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