Items |
Standard Precision |
High Precision |
Material |
Anisotropic crystalline synthetic sapphire |
Density |
3.98 g/cm3 |
Refractive Index |
1.833 (265nm)
1.793 (365nm)
1.785 (405nm)
1.76 (630nm)
1.755 (1014nm) |
Diameter |
§¶ 5 mm ¨C §¶ 50.8 mm |
Dimension Tolerance |
+0.0/-0.2 mm |
+0.0/-0.05mm |
Thickness Tolerance |
¡À 0.2 mm |
¡À 0.05mm |
Clear Aperture |
> 90% |
Parallelism |
< 3 arc minutes |
< 10 arc seconds |
Flatness |
¦Ë at 632.8 nm |
¦Ë/4 at 632.8 nm |
Surface Quality |
scratch and dig 60-40 |
scratch and dig 40-20 |
Bevel |
0.5 (0/-0.3) mm |
Notes:
Please show us the size and the coating specification. |