Typical specifications:
– Diameter 1.8 to 10 mm
– Thickness tolerance ± 0.02 mm
– Radius 1.5 mm to infinity
– Surface irregularity PV < 0.05 µm
– Surface cosmetics 5/3 x 0,016 as ISO 10110
– Centering accuracy 1 arc min
– Achromatic lenses, doublets and triplets