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  5. N-BK7 Bi-Convex Lenses
  6. Uncoated N-BK7 Bi-Convex Lenses
  7. 39213

Focusing Lens, 25.4 mm, N-BK7/A, Bi-Convex, 33 mm FL, Uncoated

  • Lens Shape
    Bi-Convex
  • Diameter
    25.4 mm
  • Lens Material
    N-BK7
  • Antireflection Coating
    Uncoated
  • Surface Quality
    60-40 scratch-dig
  • F/#
    1.3
  • Effective Focal Length (EFL)
    33.0 mm
  • Back Focal Length (BFL)
    30.7 mm
  • Edge Thickness (Te)
    1.6 mm
  • Center Thickness (Tc)
    6.7 mm
  • Principal Plane 2 (P2)
    -2.3 mm
  • Design Wavelength
    589 nm
  • Centration
    3 arc min
  • Focal Length Tolerance
    ±2 %
  • Diameter Tolerance
    +0/-0.25 mm
  • Center Thickness Tolerance
    ±0.25 mm
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