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US09162920B2 Method for manufacturing porous glass, and method for manufacturing optical element 有权
多孔玻璃的制造方法以及光学元件的制造方法

Method for manufacturing porous glass, and method for manufacturing optical element
摘要：
A method for manufacturing a porous glass includes: forming a phase-separated glass by heating at a temperature in a range of 300 to 500 degrees Celsius for 3 to 50 hours for phase separation of a glass body in which the concentration of SiO2 is 50 to 70 percent by weight, the concentration of B2O3 is 15 to 40 percent by weight, the concentration of Li2O is 1.0 to 8.0 percent by weight, the concentration of Na2O is 2.0 to 8.0 percent by weight, the concentration of K2O is 0.3 to 5.0 percent by weight, the total concentration of Li2O, Na2O, and K2O is 3.5 to 15 percent by weight, and the ratio of the concentration of K2O to the total concentration of Li2O, Na2O, and K2O is 0.10 to 0.30; and forming a porous glass by etching the phase-separated glass.
摘要（中）：

制造多孔玻璃的方法包括：通过在300〜500℃的温度范围内加热3〜50小时来形成相分离玻璃，使SiO 2的浓度为50的玻璃体的相分离为50〜 70重量％，B 2 O 3的浓度为15〜40重量％，Li 2 O的浓度为1.0〜8.0重量％，Na 2 O的浓度为2.0〜8.0重量％，K 2 O的浓度为0.3〜5.0重量％ ，Li2O，Na2O，K2O的总浓度为3.5〜15重量％，K2O的浓度与Li 2 O，Na 2 O，K 2 O的总浓度的比例为0.10〜0.30， 并通过蚀刻相分离的玻璃形成多孔玻璃。

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