Specification
| Material |
N-BK7 |
| Diameter (Ø) |
50.8mm |
| Focal Length (EFL) |
400mm |
| Back Focal Length (BFL) |
394.99mm |
| Radius of Curvature (R) |
R1 |
135.8mm |
| R2 |
393.38mm |
| Center Thickness (Tc) |
5.0mm |
| Edge Thickness (Te) |
3.4mm |
| AR Coating |
Uncoated |
| |
 |
AR Coating is available, please contact with our services center email: unicehq@unice.com.tw
