Material Corning 7980, Corning 7979, Corning 8655, BK7, Fused silica, Ge,Si,CaF2, ZnSe,ZnS,BaF2,MgF2,LiF, Corning Eagle XG,sapphire.
Diameter: 0.2-300mm
Diameter Tolerance: ±0.01 mm(as per your need)
Center Thickness Tolerance: ±0.01mm(as per your need )
Surface Quality: 80/50,60/40,40/20,10/20
Clear Aperture：>90%
Parallelism: +/-30''
Coating Custom: AR, BBAR, DLC, AF/AS, Hydrophobic, ITO/FTO, AR+AF/AS coating, AR+DLC, ITO/FTO+AR coating.
Bevel 0.1~0.3mm x 45°