Технические характеристики
- Lens Type Cylindrical
- Lens Shape Plano-Convex
- Size 50.8 x 50.8 mm
- Center Thickness (Tc) 6.58 mm
- Edge Thickness (Te) 3 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) 200.0 mm
- Back Focal Length (BFL) 195.67 mm
- Thickness 6.58 mm
- Principal Plane 2 (P2) -4.33 mm
- Radius of Curvature (R) 92.00 mm
- Size Tolerance ±0.1 mm
- Focal Length Tolerance ± 2.0%
- Center Thickness Tolerance +0.5/-0.25 mm
- Edge Thickness Tolerance ±0.3 mm
- Wedge
- Clear Aperture &ge,central 80% of dimensions
- Chamfers 0.5 mm face width
- Chamfers Angle/Tolerance 45°, typical
- f/Y 3.9
- Cleaning See How to Clean Optics
