Substrate Material:optical glass,quartz,sapphire,znse,caf2,ge,si, baf2,mgf2 etc Diameters Available:0.5mm to 600mm Diameter Tolerance:+0.00/-0.01mm or customer design Surface Quality:20-10or customer design Surface Flatness:1/10 lambda or customer design. Clear Aperture:>90% of Diameter Coating:AR,BBAR,HR,MGF2,AL,Sliver,Golden
