Технические характеристики
- Lens Type Cylindrical
- Lens Shape Plano-Concave
- Size 50.8 x 25.4 mm
- Center Thickness (Tc) 2.5 mm
- Edge Thickness (Te) 5.99 mm
- Lens Material UV Grade Fused Silica
- Antireflection Coating Uncoated
- Surface Quality 40-20 scratch-dig
- Surface Flatness &lambda,/2-&lambda,/4
- Effective Focal Length (EFL) -50.2 mm
- Back Focal Length (BFL) -51.91 mm
- Thickness 2.5 mm
- Principal Plane 2 (P2) -1.71 mm
- Radius of Curvature (R) -23.09 mm
- Focal Length Tolerance ± 2.0%
- Center Thickness Tolerance +0.5/-0.25 mm
- Wedge
- Clear Aperture &ge,central 80% of dimensions
- f/Y -2
- Cleaning See How to Clean Optics
