Lenses
Plano-Convex Lens: 50.8mm Dia. × 400mm FL, BK7, Uncoated
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Availability: 2 in stock
Product Specifications
| Lens Type | Plano-Convex |
|---|---|
| Product Catalogue Number | PCX50BK7N0400 |
| Wavelength Range: (nm) | 350 - 2200 |
| Coating | Uncoated |
| Material | BK7 |
| Side 1 Type | Convex |
| Side 2 Type | Plane |
| Diameter (ϕ): (mm) | 50.80 |
| Diameter Tolerance: (mm) | ± 0.05 |
| Focal Length: (mm) | 400 |
| Effective Focal Length (EFL): (mm) | 402.53 |
| Back Focal Length (BFL): (mm) | 393.8 |
| Focal Length Tolerance: (%) | ± 1 |
| Centre Thickness (Tc): (mm) | 10.0 |
| Edge Thickness (Te): (mm) | 8.7 |
| Thickness Tolerance: (mm) | ± 0.1 |
| Centering (arcmin) | <2 |
| Side 1 Radius: (mm) | 196.9 |
| Side 2 Radius: (mm) | Infinity |
| Surface Quality (Scratch/Dig) | 40/20 |
| Power (peak to valley) | 2λ |
| Surface Irregularity | λ/3 |
| f Number | 7.9 |
| Clear Aperture: (mm) | 49.8 |
| Numerical Aperture | 0.1 |
| Bevel | 0.5 mm × 45 degree |
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