Crystal sapphire possesses a unique combination of excellent optical, physical and chemical properties it is the hardest of the oxide crystals. sapphire retains its strength at high temperatures, has good thermal properties, excellent transparency and chemically resistant to common acids. These properties encourage its wide use in hostile environments where optical transmission in the range from the visible to the near infrared is required.
sapphire windows specification:
| Material |
Sapphire |
| Diameter |
3-500mm |
| Diameter Tolerance |
+/-0.1mm |
| Thickness Tolerance |
+/-0.1mm |
| Surface Quality |
60-40 |
| Surface Figure |
λ/4 |
| Bevel |
Propective bevel |
| Clear Aperture |
90% |
| Parallelism |
< 3 arc minute |
| Coating |
Specified by customers |
