Sapphire carving
- Category： Sapphire carving
Material:蓝宝石/Sapphire
Design Wavelength:587.6nm
Focal Length Tolerance:±1%
Diameter Tolerance:+0.0/-0.1mm
Thickness Tolerance:±0.2mm
Surface Accuracy:λ/2@632.8nm
Surface Quality:40-20
Centration:<3'
Clear Aperture:>90%
Bevelling:<0.2×45°
Coating:Custom Design
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