Plano Concave Lens

Diameter Available 2mm – 120mm

Diameter |Tolerance 0/0.02mm

Thickness Tolerance /0.02mm

Focal Length Tolerance /-1%

Surface Accuracy L/4 irregularity @632.8nm

Surface Quality 20-20 SD

Centration <3 arc min

Clear Aperture >90%

Bevel   Protective bevel

Material BK7, 

AR coating and BBAR