The KPX543 N-BK7 Plano-Convex Lens is an uncoated, 12.7 mm diameter N-BK7 plano-convex lens with an effective focal length of 25.4 mm. It has = &lambda,/2 surface irregularity, 60-40 scratch-dig. N-BK7 is an excellent material for most visible and near infrared applications. It is the most common optical glass, and it provides great performance at a good value.
Технические характеристики
- Lens Shape Plano-Convex
- Diameter 12.7 mm
- Lens Material N-BK7
- Antireflection Coating Uncoated
- Surface Quality 60-40 scratch-dig
- Surface Accuracy, Irregularity λ/2
- Surface Accuracy, Power 2.5 λ
- F/# 2
- Effective Focal Length (EFL) 25.4 mm
- Back Focal Length (BFL) 22.34 mm
- Radius of Curvature (R) 13.120 mm
- Edge Thickness (Te) 3.0 mm
- Center Thickness (Tc) 4.63 mm
- Principal Plane 2 (P2) -3.05 mm
- Design Wavelength 546.1 nm
- Centration ≤3 arc min
- Chamfers 0.25-0.75 mm
- Chamfers Angle/Tolerance 45° ±15°, typical
- Focal Length Tolerance ±2 %
- Diameter Tolerance +0/-0.15 mm
- Center Thickness Tolerance ±0.2 mm
- Clear Aperture ≥central 90% of diameter
- Cleaning See How to Clean Optics
