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  2. Optics
  3. Optical Lenses
  4. Plano-Concave Lenses
  5. N-BK7 Plano-Concave Lenses
  6. Visible N-BK7 Plano-Concave Lenses

Visible N-BK7 Plano-Concave Lenses

Specifications

  • Lens Shape
    Plano-Concave
  • Lens Material
    N-BK7
  • Antireflection Coating
    430-700 nm
  • Coating Type
    Visible Multilayer
  • Coating Code
    AR.14
  • Damage Threshold
    7.5 J/cm2, 10 ns pulses, 10 Hz at 532 nm
  • Surface Quality
    40-20 scratch-dig
  • Surface Accuracy, Irregularity
    λ/4
  • Surface Accuracy, Power
    1.5 λ
  • Centration
    ≤3 arc min
  • Chamfers
    0–0.8 mm face width
  • Chamfers Angle/Tolerance
    45° ±15°, typical
  • Focal Length Tolerance
    ±1 %
  • Diameter Tolerance
    +0/-0.1 mm
  • Clear Aperture
    ≥central 90% of diameter
  • Cleaning
    See How to Clean Optics

Resources & Downloads