Typical specifications:
– Diameter range 10 to 130 mm
– Tickness tolerance ± 0.03 mm
– Tickness range 0.8-50mm
– Radius 5 mm to infinity
– Surface irregularity PV < 0.125 µm
– Surface cosmetics 5/2х0,100 ISO 10110 or better S-D/60-40 or better MIL -0-13830A
– Centering -3 arc min or better
– Achromatic lenses, doublets and triplets
– lenses round and square share
– Black varnishing on lens edges