It is a high-purity silicon tetrachloride synthetic optical quartz glass containing a large amount of hydroxyl (2000ppm). It has excellent UV properties of the lens, particularly in the short-wave UV region, which far better than all the other transmission properties of glass, at a transmittance of 90% 185�¼m, synthetic quartz glass has a strong absorption peak at 2730nm at no granular structure. Is an excellent optical materials within 185-2500m�¼ band range.
