| Name: | Sapphire Viewports |
| 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 10 Arc Second |
| Surface Quality: | S/D 80/60~20/10 per MIL-PRT-13830 |
| Quantity: | Dia 80mm From 20pcs / Dia100 From 2pcs |
| Materials: | Optical Grade Synthetic Sapphire Ky Method |
| Delivery time: | Usually 4 weeks after deposit received |
| Coating: | Band Pass, Cut off, AR |
| Chamfer: | As Request Angle or Radius |
Product Description
.Sapphire Viewports:
Viewports are widely used in Vacuum Chamber and High Vacuum System, The sight glass of the viewports can be made with BK7 glass/ Quartz/ GaF and Sapphire, it's depends on the Vacuum Class of the viewports. Generally, BK7 and Quartz are most common materials using. When the requests rising up（MBar), Sapphire must be needed because of the excellent strength.
Check the sapphire properties by downloading the files Click here!!
.Why Use Sapphire?
1.Excellent Moh's Hardness Upto 9H, Only Softer Than Diamond(10H), (Optical Glass 6~7)
2.Great Transmittance From 200nm~5000nm; AVG>85% @ Visible Light Freqency
3.No Attacked By Acid Or Alkalis, Only Attacked By HF At 300℃.
4.High Softening Point, Low Thermal Expansion.
5.Excellent Mechnical Properties.
We can also supply coating jobs, typical coating: AR/ Band Pass/ Cut off.
