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Sapphire Watch Crystal Wrist for High Quality Watch Crystal 20-50mm 1mm 2mm 3mm Thickness Flat Dome
Jiaozuo Commercial Finewin Co., Ltd. Jiaozuo Commercial Finewin Co., Ltd. Gold Member Audited Supplier Henan, China
US$0.50 - 10.00
Min. order: 10 Pieces
Price Tiers
≥ 10 unitsUS$0.50 - 10.00
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Key Attributes
UsageOptical
TypeConcave Lens
Transmittance>95%
ShapeCylindrical Shaped Lens
MaterialOptical Glass
Lenses ColorClear
CertificationRoHS, ISO9001, CE
CustomizedCustomized
CoatingUV
Diameter1mm-500mm
Surface Quality40/20;60/40
CoatAnti-Reflective (Ar) Coatings
Clear Aperture: >90% Of Diameter>90% of Diameter
Surface Flatness1/4 Lambda
Transport PackageElectrolytic Capacitor Paper, Foam, Carton
Specificationcustomerised
TrademarkFineWin
OriginChina
Product Nameindustrial sapphire wafer
Sapphire Optical Lens Chemical FormulaAL2O3
Crystal StructureHexagonal
Hardness Mohs9H
Compressvise StrengthGpa 2.0
Density(20ºC)3.98g/cm
Fusion Point2040ºC
Boiling Point2980ºC
Coefficient Of Thermal Expansionα=5.8×10 -6 /K
Specific Heat0.418W.s/g/k
Thermal Conduction25.12W/m/k(@100°C)
Optical Transmission Range0.17-5.5μm
Transmission(0.3~5um)85-88%
Refractive Indexno=1.768nd
Dn/Dt13×10-6/K(@633nm)
Permittivity11.5(//c), 9.3(⊥c)
Diameter (φMm)8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0
Thickness (Mm)0.5, 1.0, 2.0
Diameter Tolerance (Mm)+0.0/-0.2 (General), +0.0/-0.1 (High Precision)
Thickness Tolerance (Mm)±0.2 (General), ±0.05 (High Precision)
Clear Aperture>75% (Small Size), >90% (Large Size)
Parallelism3 min. (General), 10 sec. (High Precision)
Surface Quality: Scratch/Dig80/50 (General), 40/20 (High Precision)
Flatness (Per 25mm@633nm)λ(General), λ/4 (High Precision)
Bevel (Face Width X 450)<0.25mm
Refractive Index (Nd)1.768
Coefficient Of Dispersion (Vd)72.2
Density (G/Cm3)3.97
Tce(μM/MºC)5.3
Soften Temperature(ºC)2000
Knoop Hardness(Kg/Mm2)2200
Q: What'S The Way Of Shipping And Cost?A: (1) We accept DHL, Fedex, TNT, UPS, EMS etc.
Q: How To Pay?A: T/T, Paypal, etc
Q: What'S Your Moq?A: (1) For inventory, the MOQ is 5pcs.
Q: What'S The Delivery Time?A: (1) For the standard products
Q: Do You Have Standard Products?A: Our standard products in stock.
Q: Can I Customize The Products Based On My Need?A: Yes, we can customize the material, specifications and optical coating for your optical components based on your needs.
Packaging & Delivery
Selling UnitsSingle item
Package TypeStandard export packaging
Lead Time7-14 days after payment
Buyer Protections
Secure Payment
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Quality Assurance
Products are verified before shipment. Contact us within 7 days if you receive defective items.
Buyer Protection
Full refund if product is not as described or doesn't arrive on time.
Supplier
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Jiaozuo Commercial Finewin Co., Ltd.