Технические характеристики
- Lens Type Cylindrical
- Lens Shape Plano-Concave
- Size 50.8 x 50.8 mm
- Center Thickness (Tc) 2.5 mm
- Edge Thickness (Te) 4.76 mm
- Lens Material UV Grade Fused Silica
- Antireflection Coating 650-1000 nm
- Coating Code AR.16
- Surface Quality 40-20 scratch-dig
- Surface Flatness &lambda,/2-&lambda,/4
- Effective Focal Length (EFL) -300.0 mm
- Back Focal Length (BFL) -301.71 mm
- Thickness 2.5 mm
- Principal Plane 2 (P2) -1.71 mm
- Radius of Curvature (R) -138.00 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 -5.9
- Cleaning See How to Clean Optics
