Material:  optical sapphire
Specification: φ50.80 * 0.43 ~ 0.45 mm;
Material:  optical sapphire
Diameter tolerances: + / - 0.10 ~ + / - 0.25 mm;
Thickness tolerance: + / - 0.01 ~ + / - 0.05 mm;
Finish S/D: 80/50，60/40，40/20，20/10，10/5;
Wave-front error @ 632.8 nm: λ~λ/20 per 25mm;
Effective optical aperture: 80% ~ 99%;
Parallelism: 5 '~ 5';
Break Edge: 0.10 ~ 2.0 + / - 0.05 * 45 °
Coating: CUSTOMIZED
Supply Ability: 10,000 per Month