PROCESS FOR REMOVING HYDROGEN AND CARBON IMPURITIES FROM GLASSES

摘要

A chalcogen-based glass (26) is placed in a reaction chamber (14). A halide is mixed with the glass. The glass is melted and the halide reacts with hydrogen or carbon impurities in the glass. A vacuum is pulled through a tailpipe (20) to remove gas by-products. The tail pipe (20) is sealed. Vapors from the glass pass through openings (16, 18) and condense in a tube (12) to form a distillate which is out gassed, cooled and annealed to form a glass.