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