Технические характеристики
- Lens Shape Plano-Convex
- Diameter 25.4 mm
- Lens Material HPFS 7978
- Antireflection Coating 355 nm
- Coating Code AR.3
- Reflectance Ravg
- Damage Threshold 15 J/cm2, 20 nsec pulses, 10 Hz at 1064 nm
- Surface Quality 15-5 scratch-dig
- Surface Flatness &lambda,/10
- Surface Accuracy, Irregularity &lambda,/8
- Surface Accuracy, Power 1.5 &lambda,
- F/# 9.8
- Effective Focal Length (EFL) 250 mm
- Back Focal Length (BFL) 247.46 mm
- Radius of Curvature (R) 114.603 mm
- Edge Thickness (Te) 3.0 mm
- Center Thickness (Tc) 3.710 mm
- Design Wavelength 589 nm
- 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
