The KPX591-C N-BK7 Plano-Convex Lens is a 400-700 nm anti-reflection coated, 25.4 mm diameter N-BK7 plano-convex lens with an effective focal length of 88.3 mm. It has = λ/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 25.4 mm
- Lens Material N-BK7
- Antireflection Coating 400-700 nm
- Coating Type Visible Single-Layer MgF2
- Coating Code -C
- Damage Threshold 7 J/cm², 10 ns pulses, 20 Hz at 532 nm
- Surface Quality 60-40 scratch-dig
- Surface Accuracy, Irregularity &lambda,/2
- Surface Accuracy, Power 2.5 &lambda,
- F/# 3.4
- Effective Focal Length (EFL) 88.3 mm
- Back Focal Length (BFL) 85.14 mm
- Radius of Curvature (R) 45.803 mm
- Edge Thickness (Te) 3.0 mm
- Center Thickness (Tc) 4.80 mm
- Principal Plane 2 (P2) -3.16 mm
- Centration &le,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 &ge,central 90% of diameter
- Cleaning See How to Clean Optics
