Achromatic Lens, Broadband, 12.50 mm, 50.00 mm EFL, 345-700 nm

Technical Specs

  • Lens Type
    Achromatic Doublet
  • Lens Shape
    Plano-Convex
  • Diameter
    12.5 mm
  • Antireflection Coating
    345-700 nm
  • Coating Code
    AR.15
  • Lens Material
    N-FK5/N-F2
  • Surface Quality
    40-20 scratch-dig
  • Surface Flatness
    λ/4
  • Effective Focal Length (EFL)
    50.0 mm
  • Back Focal Length (BFL)
    47.78 mm  
  • F/#
    4  
  • Radius of Curvature (R)
    29.11 mm  
  • Radius 2
    -25.27 mm
  • Radius 3
    -71.39 mm
  • Edge Thickness (Te)
    4.55 mm  
  • Center Thickness (Tc)
    5.5 mm  
  • Thickness, Center 1
    3.50 mm  
  • Thickness, Center 2
    2.00 mm  
  • Design Wavelengths
    405 nm
  • Centration
    3-5 arcmin
  • Chamfers
    0.25 mm  
  • Chamfers Angle/Tolerance
    45°
  • Diameter Tolerance
    +0.0/-0.05 mm
  • Focal Length Tolerance
    ±2.0%
  • Center Thickness Tolerance
    ± 0.1 mm
  • Clear Aperture
    11.50 mm