Технические характеристики
- Lens Shape Plano-Concave
- Diameter 25.4 mm
- Lens Material UV Fused Silica
- 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 20-10 scratch-dig
- Surface Flatness &lambda,/2
- Surface Accuracy, Irregularity &lambda,/4
- Surface Accuracy, Power 1.5 &lambda,
- F/# -9.8
- Effective Focal Length (EFL) -250 mm
- Back Focal Length (BFL) -251.71 mm
- Radius of Curvature (R) -114.750 mm
- Edge Thickness (Te) 3.07 mm
- Center Thickness (Tc) 2.5 mm
- Principal Plane 2 (P2) -1.71 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
