Achromatic Lens, NIR, 12.0 mm Diameter, 18.0 mm EFL, 750-1550 nm

Technical Specs

  • Lens Type
    Achromatic Doublet
  • Lens Shape
    Plano-Convex
  • Diameter
    12.0 mm
  • Antireflection Coating
    750-1550 nm
  • Coating Type
    NIR Multilayer
  • Coating Code
    AR.16E
  • Damage Threshold
    1.0 J/cm2 @ 1064 nm, 10 ns , 10 Hz
  • Lens Material
    N-LaK22/N-SF6
  • Surface Quality
    40-20 scratch-dig
  • Effective Focal Length (EFL)
    18.0 mm
  • Back Focal Length (BFL)
    12.30 mm  
  • F/#
    1.5  
  • Radius of Curvature (R)
    12.05 mm  
  • Radius 2
    -8.65 mm
  • Radius 3
    -37.28 mm
  • Edge Thickness (Te)
    8.41 mm  
  • Center Thickness (Tc)
    10.5 mm  
  • Thickness, Center 1
    8.00 mm  
  • Thickness, Center 2
    2.50 mm  
  • Design Wavelengths
    880 nm
  • Centration
    3-5 arcmin
  • Chamfers
    0.25 mm  
  • Chamfers Angle/Tolerance
    45°
  • Diameter Tolerance
    +0.0/-0.1 mm
  • Focal Length Tolerance
    ±2.0%
  • Center Thickness Tolerance
    ± 0.2 mm
  • Clear Aperture
    11 mm