- 學位論文
成份對Bi2O3-P2O5-B2O3基玻璃的光學透光率及熱穩定性的影響
Effects of composition on the optical transparency and thermal stability of Bi2O3-P2O5-B2O3 based glasses
摘要
近年來，高折射率玻璃受到重視。利用模造的方式，可製備非球面，高的光學精密度的玻璃。相較於其它玻璃系統，鉍酸鹽玻璃具有高折射率及較低的玻璃轉移溫度等優點。但鉍酸鹽玻璃缺點是具有顏色。此缺點限制了其在光學元件方面的應用。 本研究的方法為透過添加過渡金屬離子補色、提高P2O5含量及成份和原料改變的方法，希望能達到為鉍酸鹽玻璃消色的目的。實驗顯示：在原為淡黃色的鉍酸鹽玻璃中添加過渡金屬離子時，FeO、CuO及Cr2O3無法產生互補色(藍色)。添加BaF2能降低熔製溫度及提高穿透率。添加CoO或同時添加CoO及BaF2的補色效果很好。磷酸鹽玻璃有較佳的紫外光區穿透性。提高P2O5的含量可以使鉍酸鹽玻璃的紫外光-可見光區的截斷波長移向短波長，減少可見光區的吸收，使得玻璃的顏色變淡，但缺點是玻璃的形成能力降低。
並列摘要
Recently, high refractive index glasses receive many attentions. The aspheric and high-precision optical glasses can be made by molding route. Compared to other glass systems, bismuthate glass has the advantages of high refractive index and low glass-transition temperature. Howere, the color of bismuthate glass limites its application on optical components. The method of this study is a through complementary color add a transition metal ion, P2O5 content and ingredients and raw materials change, hope to achieve for the purpose of bismuthate glass achromatic. The experiments show that: in the original transition metal ion is added in the yellowish bismuthate glass, FeO, CuO and Cr2O3 not generate complementary color (blue). Add BaF2 can reduce the melting temperature and improve transmittance. Add CoO or add CoO and BaF2 complementary color works well. Phosphate glass ultraviolet region penetrating better. Allows to improve the content of P2O5 bismuthate glass in the UV - visible region of the cutoff wavelength toward the shorter wavelength, reduce the absorption of the visible light region, so that the color of the glass fades, but the drawback is the decrease in the ability of the glass.