Технические характеристики
- Lens Shape Bi-Convex
- Diameter 12.7 mm
- Lens Material N-BK7
- Antireflection Coating Uncoated
- Surface Quality 40-20 scratch-dig
- Surface Accuracy, Irregularity &lambda,/4
- Surface Accuracy, Power 1.5 &lambda,
- F/# 5.9
- Effective Focal Length (EFL) 75.6 mm
- Back Focal Length (BFL) 74.43 mm
- Radius of Curvature (R) 77.538 mm
- Edge Thickness (Te) 3.0 mm
- Center Thickness (Tc) 3.521 mm
- Principal Plane 1 (P1) 1.17 mm
- Principal Plane 2 (P2) -1.17 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
