All Surface Polished Sapphire Optical Windows Crylinder Rod Lens With Plunger Stick
Optical Sapphire window Specifications: Structure Squar […]
Optical Sapphire window Specifications:
| Structure | Square plano lens |
| Substrate Material | Glass Sapphire |
| Diameters ＆Thickness Available | 1 mm to 400mm for Diameter ,0.08-300mm for Thickness |
| DiameterTolerance | +0.00/-0.10 mm |
| Surface Quality | 60-40 Scratch-Dig(general) 10-5 to 80-50 is available |
| Surface Flatness | 1/4 lambda to 3lambda |
| Surface Irregularity (Peak to Valley) | commonly 1-3λ |
| Thickness tolerance | +/-0.1mm or better |
| Focal length tolerance | +/-1% |
| Clear Aperture | >90% of Diameter |
| Chamfer | 0.05-0.5mmx45degree,according to customer’s needs. |
| Centration | 3 arc min |
| Coating | AR,Mgf2 is on request,R<0.25% Visible wavelength,laser wavelength |
Uncoated sapphire windows are suitable for harsh conditions, including high temperature, high pressure, high vacuum or corrosive environments. Sapphire has high compressive strength and is resistant to strong acid corrosion.
- Sapphire is Ideal for high temperature, high pressure or strong vacuum environments and have corrosion resistant
- Transparency from 170 nm to 5.5 µm
- Very hard and more durable than standard optical glass;
- Unique properties of sapphire material
- High temperature and high pressure treatment
Sapphire windows are highly resistant to extreme temperature and pressure changes. These windows are often used as viewing windows to observe the interior of vacuum chambers or chambers containing high temperature plasma.
Wide transmission range
Uncoated sapphire is transparent over a broad wavelength range from 170 nm to 5.5 μm.
Notes on Birefringence
SAW series sapphire windows have random axis orientation. Since sapphire is slightly birefringent, this can cause a slight change in the polarization state of the transmitted light.
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