Material
K9,Si, Ge, ZnS, ZnSe, CaF2, MgF2, Sapphire
Size
5mm-300mm
Size Tolerance
±0.1mm
±0.02mm
Clear Aperture
≥90%
95%
Surface Quality
60/40
20/10
Centration
3'
1'
Focal Length Tolerance
±2%
±0.5%
Coating
Uncoated, AR, BBAR, Reflective
