Polished Aspheric Lens, Bi-Convex, L-BAL35, 50 mm, 50.0 mm EFL, Uncoated

Technical Specs

  • Lens Shape
    Bi-Convex Aspheric
  • Diameter
    50.0 mm
  • Antireflection Coating
    Uncoated
  • Lens Material
    L-BAL 35 (589/611)
  • Surface Quality
    60-40 scratch-dig
  • Surface Accuracy
    0.75 µm RMS
  • Effective Focal Length (EFL)
    50.0 mm  
  • Back Focal Length (BFL)
    38.33 mm  
  • Center Thickness (Tc)
    19.40 mm  
  • F/#
    1.0
  • Radius of Curvature (R)
    30.85 mm  
  • Design Wavelength
    587.6 nm
  • Shape S2
    Convex
  • Diameter Tolerance
    +0.0/-0.1 mm
  • Center Thickness Tolerance
    ±0.1 mm
  • Clear Aperture
    90% of central diameter
  • Substrate Centering of Ruled Area
    3-5 arc min