... is better than all other glass, in 185 nm place through rate can reach 90%, is 185-2500 ... nm range within the scope of the excellent optical materials. ... melting optical quartz glass. It is through the 220-2500 nm range within the scope of the good material. 3. ... as 85% above, the application range of 260-3500 nm optical material The size obey to the customer's ...