$18.50
Specifications:
| Lens Form | Plano-convex Lens | Material | N-BK7 |
| Diameters(mm) | 25.0(+0.0/-0.1) | Design Wavelength(nm) | 632.8 |
| Effective Focal Length EFL(mm) | 75.00±1% | Back Focal Length BFL(mm) | 72.29 |
| Coating | 350-650nm AR Coating | Surface Quality(S/D) | 40/20 |
| Irregularity@632.8nm | λ/4 | Centration Error(arc min) | ≤2 |
| Center Thickness | 4.1±0.1 | Edge Thickness | 2.0±0.1 |
| Curvature Radius R1 | 38.63 | Clear Aperture | 90% |
| Protective Chamfer | 0.2mmx45° |
