| Name: | Sapphire Viewport Windows |
| Diameter: | From 1 mm to 305 mm in any optical axis |
| Thickness: | From 0.2mm up to 50mm |
| Flatness: | Can Be λ/10 @633nm or better |
| Parallelism: | Can Be As Tight As 1 arc second |
| Surface Quality: | S/D 80/60~20/10 per MIL-PRT-13830 |
| Materials: | Optical Grade Sapphire KY method |
| Coating: | Band pass, Cut off, AR, ETC... |
| MOQ: | φ50mm, 20pcs/ φ100mm, 5pcs/ φ150mm, 1pcs |
| Lead Time: | Usually 4 weeks after deposit received |
Product Description
+Sapphire Windows are widely used in Vacuum Chamber, Vacuum Furnace, Oil Pipe, Sight Glass. One of the important reason is sapphire is the most strongest Optical materials. In the same working conditions and light transmission request, sapphire can be thinner than Optical Glass twice or more! Please check the main properties of sapphire by downloading our data sheets!
+Quick Properties:
4.3x10-6/℃ Chemical Formula
Al2O3
Optical Index Of Refraction
No:1.768/ Ne:1.760 @589.3nm
Compressive Strength
300,000 PSI
Flexural Strength
100,000 PSI
Tensile Strength
58,000 PSI
Mohs Hardness
9 Grade
Maximum Temperature (Continuous)
2000℃
Coefficient Of Expansion-Perpendicular to C-axis
Coefficient Of Expansion-Parallel to C-axis
5.4x10-6/℃
Conductivity
46w/mk
Specific Heat (0~100℃）
0.16cal/g℃
.Optical Capacity
Theory Curve Measuring Result （Visible Light)
*Test Sample φ25x3mm,Transmittance may be different depend on Materials.
.Typical Shapes
1.Round Sapphire Windows
2.Square Sapphire Windows
3.Rectangular Sapphire Windows
4.Sector Sapphire Windows
5.Step Round/ Square/ Rectangular Sapphire Windows
6.Irregular Sapphire Windows
