Material: | Sapphire Crystal, Sapphire | Usage: | Wrist Watch |
---|---|---|---|
Shape: | Customized | Surface Quality: | 40/20 |
Coating: | Anti-Reflective (AR) Coatings | Color: | Transparent Clear |
High Light: | sapphire glass watch face,synthetic sapphire glass |
Clear Transparent Sapphire Dial Window For Optical Sapphire Glass Products
Product Description
WE manufactures various shape and materials optical lens. Wide selection of optical lens includes
spherical lens, aspherical lens, cylindrical lens, magnifying lens.
1. Coatings for lens include normal BBAR coating, dichroic coating, super broad band antire+flective coating,
filtering coating, reflective coating and others coating according to customer’s requirement.
2. Processing equipments are imported from Germany, Korea and Japan.
3. Application: optical lens are widely used for precision optical instruments, TV projector, microscopes,
collimator, digital cameras, LCOS, lens assembly and cctv /ccd digital cameras, etc.
4. Output of optical elements reaches 30,000,000 sets per year.
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/m2 |
Thermal Limit |
22 W m-1 K-1 |
Thermal expansion coefficient |
8.4 x 10-6 K-1 |
About sapphire glass
SAPPHIRE CRYSTAL (sapphire glass) generally refers to synthetic sapphire, generally used in the manufacture of the watch glass.
It is resistant to wear with tungsten titanium alloys and high-tech ceramics. but sapphire materials can wear resistance and
withstand the strong impact, and some of the same or higher hardness of the material (e.g., millstone, sandpaper, nail, granite,
concrete wall, and floor, etc.) so sapphire glass are not likely to scratch the surface of these materials.