Achromatic Triplet Lens, Visible, 38.1 mm, 125 mm EFL, 400-700 nm

  • Lens Type
    Achromatic Triplet
  • Lens Shape
    Plano-Convex
  • Diameter
    38.1 mm
  • Antireflection Coating
    400-700 nm
  • Coating Type
    Visible Single-Layer MgF2
  • Damage Threshold
    1.0 J/cm2 @ 1064 nm, 10 ns , 10 Hz
  • Transmission
    T>95%
  • Lens Material
    N-BaSF2/N-SF3/N-BaSF2
  • Surface Quality
    40-20 scratch-dig
  • Surface Accuracy, Irregularity
    λ/4
  • Surface Accuracy, Power
    1.5 λ  
  • Effective Focal Length (EFL)
    125 mm
  • Back Focal Length (BFL)
    117.5 mm  
  • F/#
    3.3  
  • Radius of Curvature (R)
    118.645 mm  
  • Radius 2
    -59.744 mm
  • Radius 3
    59.744 mm
  • Radius 4
    -118.645 mm
  • Edge Thickness (Te)
    18.5 mm  
  • Center Thickness (Tc)
    21.6 mm  
  • Thickness, Center 2
    3.6 mm  
  • Design Wavelengths
    589 nm
  • Centration
    ≤3 arc min
  • Diameter Tolerance
    +0/-0.1 mm
  • Focal Length Tolerance
    ±2.0%
  • Center Thickness Tolerance
    ±0.3 mm
  • Clear Aperture
    90% of central diameter
  • Cleaning