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Product Name | OEM Customized High Quality Laser cutting sapphire crystal watch glass | ||||||
Diameter Tolerance | +0.0/-0.05mm | ||||||
Center Thickness Tolerance | ±0.05 mm | ||||||
Focal Length Tolerance | ±1% | ||||||
Surface Quality | 80/50,60/40, 40/20 or better | ||||||
Material | Optical glass(K9/BK7/JGS1,Etc.) | ||||||
Clear Aperture | >90% | ||||||
Centering | <3 arc min | ||||||
Coating | AR coating or custom made | ||||||
Bevel | Protective bevel as needed | ||||||
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