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Customized Shape Sapphire Phone Screen Optical Window Type 1-200 mm Dia
Product Description
Sapphire optical windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration. Sapphire, a single crystal form of Al2O3, is resistant to attack by strong acids due to its high dielectric constant. It has high compressive strength and a high melting point. It is also resistant to UV radiation darkening. Our sapphire optical windows are not coated, but a single layer coating of MgF2 on each surface of the window increases the single surface transmittance to 99% throughout the entire visible spectral region. Please note the SAW series sapphire windows are provided in random axis orientation by default and its birefringent nature could affect the polarization state of your application.
watch crystal for watches Made from Mineral glass domed in shape.(not plastic)
Type:Watches for Parts
Domed watch glass lens
Material: Glass
Diameter: 28.5mm/1.12inch, 29mm/1.14inch, 29.5mm/1.16inch,30mm/1.18inch, 30.5mm/1.2inch, 31.5mm/1.24inch, 32mm/1.26inch, 32.5mm/1.28inch, 34mm/1.34inch
Feature:
Hardness level is 9, just next to diamond
Highly clear
Smooth edge treatment, no scratches
The surface is smooth
High temperature resistant, scratch-proof, wear-resistant
Property | Specification |
Thickness | 0.5-50mm |
Size tolerance | 0.02mm |
Edge Finish | Ground and beveled |
Surface Quality | 40-20 scratch-dig |
Surface Flatness | λ/4 @ 633 nm |
Parallelism | ≤3 arc min (≤0.9 mrad) |
Clear Aperture | >80% of central diameter |
Hardness (Knoop) | 1370 kg mm-2 |
Young's modulus | 3.4 x 1011 N m-2 |
Thermal Limit | 22 W m-1 K-1 |
Thermal expansion coefficient | 8.4 x 10-6 K-1 |
Company Information
Our company has a complete ,standardized and scientific quality management system.Characteristic lead the future. Characteristic products and service is the foundation of our cooperation,and we look forward to create brilliant achievements together with you.