Material: Bk7, Fused Silica, Silicon, Sapphire, Germanium, CaF2, MgF2
Specifications
Material |
Bk7, (other material upon request) |
Focal Length Tolerance |
2% |
Fringes |
1-5 |
Irregularity of Fringes |
0.2-0.5 |
Diameter Tolerance |
+0.0/-0.10 mm |
Center Thickness(Tc) Tolerance |
+0.0/-0.10 mm |
Centration |
3 arc minutes |
Clear Aperture |
90% of Diameter |
Surface Quality: |
60-40 scratch and dig |
Coating |
Single-layer MgF2 AR Coateds |
Note: All material and size are available upon
request.