Двояковыпуклая линза, N-BK7, диаметр 25,4 мм, EFL -50 мм, 650–1000 нм Модель: KBC043AR.16

Технические характеристики

• Lens Shape Bi-Concave
• Diameter 25.4 mm
• Lens Material N-BK7
• Antireflection Coating 650-1000 nm
• Coating Type NIR Multilayer
• Coating Code AR.16
• Damage Threshold 7.5 J/cm2, 10 ns pulses, 10 Hz at 1064 nm
• Surface Quality 40-20 scratch-dig
• Surface Accuracy, Irregularity &lambda,/4
• Surface Accuracy, Power 1.5 &lambda,
• F/# -1.9
• Effective Focal Length (EFL) -50 mm
• Back Focal Length (BFL) -50.81 mm
• Radius of Curvature (R) -52.103 mm

• Edge Thickness (Te) 5.04 mm
• Center Thickness (Tc) 2.5 mm
• Principal Plane 1 (P1) 0.81 mm
• Principal Plane 2 (P2) -0.81 mm
• Design Wavelength 589 nm
• Centration &le,3 arc min
• Chamfers 0–0.8 mm face width
• Chamfers Angle/Tolerance 45° ±15°, typical
• Focal Length Tolerance ±1 %
• Diameter Tolerance +0/-0.1 mm
• Center Thickness Tolerance ±0.1 mm
• Clear Aperture &ge,central 90% of diameter
• Cleaning See How to Clean Optics