Focal Length Tolerance ±1%
Surface Accuracy 0.5 fringes per cm
Length/Width Tolerance ±0.1mm
Center Thickness Tolerance ±0.1mm
Centration <3 arc min
Clear Aperture >90%
Surface Quality 40-20 S/D
Bevel Protective bevel
Material BK7, Fused silica and other optical glass
Coating AR coating
We can be able to manufacture against requested specifications and drawings.