Specification
| Material |
N-BK7 |
| Diameter (Ø) |
25.4mm |
| Focal Length (EFL) |
400mm |
| Back Focal Length (BFL) |
397.61mm |
| Radius of Curvature (R) |
R1 |
136.5mm |
| R2 |
402.03mm |
| Center Thickness (Tc) |
2.4mm |
| Edge Thickness (Te) |
2.0mm |
| AR Coating |
Uncoated |
| |
 |
AR Coating is available, please contact with our services center email: unicehq@unice.com.tw
