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1. Diameter D: Φ1.00 - Φ220.00mm, diameter limit bias 0.005-0.02
2. Thickness H: 0.1 - 50.00mm, thickness limit deviation + / -0.005
3. Material: high quality synthetic sapphire single crystal (α-Al2O3 ≥ 99.99%), BK glass
4. Orientations: C, A, R
5. Axial: C-axis deviation of ≤ 3 °
6. Surface roughness: Rz0.01
7. Flatness: λ / B: 633nm
8. Surface accuracy: 0.1λ
9. Center Bias: 0.01mm
10. Surface requirements: double-sided polishing, one side polished
11. Surface quality: S / D: 10 / 5 20/10 40/20 60/40 80/50
12. Infrared transmission: the 633nm wavelength> 85%
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