Двояковыпуклая линза, N-BK7, диаметр 50,8 мм, EFL -250 мм, 430–700 нм Модель: KBC073AR.14

Технические характеристики

• Lens Shape Bi-Concave
• Diameter 50.8 mm
• Lens Material N-BK7
• Antireflection Coating 430-700 nm
• Coating Type Visible Multilayer
• Coating Code AR.14
• Damage Threshold 7.5 J/cm2, 10 ns pulses, 10 Hz at 532 nm
• Surface Quality 40-20 scratch-dig
• Surface Accuracy, Irregularity &lambda,/4
• Surface Accuracy, Power 1.5 &lambda,
• F/# -4.9
• Effective Focal Length (EFL) -250 mm
• Back Focal Length (BFL) -250.82 mm
• Radius of Curvature (R) -258.824 mm

• Edge Thickness (Te) 4.52 mm
• Center Thickness (Tc) 2.5 mm
• Principal Plane 1 (P1) 0.82 mm
• Principal Plane 2 (P2) -0.82 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