| Place of Origin: | Guangdong, China (Mainland) |
|---|---|
| Price: | US $4.50 |
| Type: | Watches For Parts | Material: | Sapphire |
|---|---|---|---|
| Size: | OEM Size | MOQ: | 100pcs |
| Application: | Watch Sapphire Crystal | Shape: | Square |
| Surface Treatment: | Polish | Feature: | Scratch-resistant |
| Usage: | Watch Glass | Service: | OEM ODM |
| Coating: | AR-coating | ||
| High Light: | scratch resistant watch face,optical collimator lens |
||
Scratch - Resistant Square Synthetic Sapphire Glass 0.5-50 mm Thickness
|
Material
|
optical glass
|
|
Diameter
|
3-460mm
|
|
Thickness
|
0.15-30mm
|
|
Surface quality
|
80/50
|
|
Coating
|
AR coating R＜1% @400-700nm
|
|
Color
|
Clear
|
Synthetic Sapphire Window Technique Index :
| 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 |
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