Common Specifications:

Material: monocrystalline silicon,optical grade

Surface Accuracy: 1.5λ

Surfce Irregularity : 0.5λ

Diameter(Φ) Tolerance: -0.20mm

Center Thickness Accuracy:± 0.02 mm

Surface Quality: 60-40 scratch-dig

Centration Accuracy: ≤5 arc minutes

Clear Aperture: >80% Φ

Bevel: 0.2mm x 45º

Coating:uncoated