Lenses
Plano-Convex Lens: 76.2mm Dia. × 250mm FL, BK7, Uncoated
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Availability: 3 in stock
Product Specifications
| Lens Type | Plano-Convex |
|---|---|
| Product Catalogue Number | PCX13BK7N0250 |
| Wavelength Range: (nm) | 350 - 2200 |
| Coating | Uncoated |
| Material | BK7 |
| Side 1 Type | Convex |
| Side 2 Type | Plane |
| Diameter (ϕ): (mm) | 76.20 |
| Diameter Tolerance: (mm) | ± 0.05 |
| Focal Length: (mm) | 250 |
| Effective Focal Length (EFL): (mm) | 250.36 |
| Back Focal Length (BFL): (mm) | 245.7 |
| Focal Length Tolerance: (%) | ± 1 |
| Centre Thickness (Tc): (mm) | 5.0 |
| Edge Thickness (Te): (mm) | 4.7 |
| Thickness Tolerance: (mm) | ± 0.1 |
| Centering (arcmin) | <2 |
| Side 1 Radius: (mm) | 125.2 |
| Side 2 Radius: (mm) | Infinity |
| Surface Quality (Scratch/Dig) | 40/20 |
| Power (peak to valley) | 2λ |
| Surface Irregularity | λ/3 |
| f Number | 19.7 |
| Clear Aperture: (mm) | 11.7 |
| Numerical Aperture | 0.04 |
| Bevel | 0.5 mm × 45 degree |
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