Environmentally induced changes in the state of polished surfaces of STK19 and OF4 optical glasses were studied by means of ellipsometry and IR-spectroscopy as well as by measuring the roughness of the samples. It is shown that the surface state changes immediately on completion of polishing and does not change during the entire holding period. Changes in the temperature and humidity bring about subsequent changes in the state of the surfaces. Surface treatment of optical glasses in HMDS (hexamethyldisilazane) vapor impedes corrosion from occurring in the glass bulk and prevents roughness from increasing.

中文翻译：

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环境对OF4和STK19光学玻璃抛光表面的影响

通过椭圆偏振和红外光谱以及测量样品的粗糙度，研究了环境引起的STK19和OF4光学玻璃的抛光表面状态变化。结果表明，表面状态在抛光完成后立即改变，并且在整个保持期间都没有改变。温度和湿度的变化导致表面状态的后续变化。在HMDS（六甲基二硅氮烷）蒸气中对光学玻璃进行表面处理可防止在玻璃块中发生腐蚀并防止粗糙度增加。