T-LB4837 - f = 250.0 mm, Ø1" UV Fused Silica Bi-Convex Lens, Uncoated
T-LB4837 - f = 250.0 mm, Ø1" UV Fused Silica Bi-Convex Lens, Uncoated
Features
- 5 Different Diameters Available: Ø5 mm, Ø6 mm, Ø1/2", Ø1", and Ø2"
- Wavelength Range: 185 nm - 2.1 μm (Uncoated)
- Focal Lengths Available from 10.0 - 1000.0 mm
- Fabricated from UV Grade Fused Silica
- Diameter 1"
- Focal Length 250.0 mm
- Diopter +4.0
- Radius of Curvature 229.6 mm
- Center Thickness 2.7 mm
- Edge Thickness 2.0 mm
- Back Focal Length 249.1 mm
- Reference Drawing
| Common Specifications | |
|---|---|
| Lens Shape | Convex/Convex |
| Diameters Available | Ø5 mm, Ø6 mm, Ø1/2", Ø1", or Ø2" |
| Diameter Tolerance | +0.0 mm / -0.1 mm |
| Substrate Material | UV Grade Fused Silica |
| Focal Length Tolerance | ±1% |
| Surface Quality | 40-20 Scratch-Dig |
| Spherical Surface Power | 3λ/2 |
| Spherical Surface Irregularity | λ/4 |
| Clear Aperture | >90% of Dia. |
| Design Wavelength | 588 nm |
| Index of Refraction (@ Design λ) |
1.460 |
| Centration | ≤3 arcmin |