Place of Origin
Jilin, China
Material
BK7, UV Fused Silica, Sapphire, ZnSe, Caf2, Si, Ge, etc.
Diameter Tolerance
+/-0.02mm
Clear Aperture
90% Diameter
Surface quality
60-40 40-20 20/10 10/5
Flatness
1/10 Lambda @632.8nm
Angle tolerance
<2'', <3'', <30'', <1', <3'
Coating
AR, HR, Aluminum, Silver or customer request.