A study of the change in the state of the polished surface of optical glasses of STK19 and OF4 grades by ellipsometry, IR spectroscopy and measurement of sample roughness under the influence of the environment has been carried out. It is shown that the state of the surfaces changes immediately after the completion of polishing and does not change during the entire holding period. Changes in external conditions (temperature and humidity) lead to a further change in the state of the surfaces. The surface treatment of optical glasses in HMDS vapors prevents the penetration of corrosion into the glass and prevents an increase in roughness
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