Material BK7;Fused Silica
Diameter Tolerance +0.0,-0.15mm
Thickness Tolerance +/-0.1mm
Paraxial Focal Length Tolerance +/-2%
Centration 3 arc minute
Clear Aperture >85%
Surface Figure λ/4@632.8nm
Surface Quality 60/40 Scratch/Dig
Bevel 0.25mm*45°
Coating Uncoated