Specification
| Material | 
N-BK7 | 
| Focal Length (EFL)  | 
-50mm | 
| Diameter (Ø) | 
25.4mm | 
| Radius of Curvature (R) | 
-25.84mm | 
| Center Thickness (Tc) | 
2.0mm | 
| Edge Thickness (Te) | 
5.34mm | 
| Back Focal Length (BFL) | 
-51.32mm | 
| AR Coating | 
Uncoated | 
|   | 
   | 
AR Coating is available, please contact with our services center email: unicehq@unice.com.tw

