Neutral Density Filter, Absorptive, 50.8 x 50.8 mm, 0.7 OD at 546.1 nm

Technical Specs

  • Size
    50.8 x 50.8 mm
  • Optical Density
    0.7
  • Optical Density Tolerance
    ±4% at 546.1 nm
  • Wavelength Range
    400-900 nm
  • Angle of Incidence
  • Wedge
    ≤3 arc min
  • Transmission
    20.0 % at 546.1 nm
  • Size Tolerance
    ±0.3 mm
  • Surface Flatness
    ≤4λ at 632.8 nm over the clear aperture
  • Surface Quality
    60-40 scratch-dig
  • Chamfers
    0.25–0.76 mm face width
  • Chamfers Angle Tolerance
    45° ±15°
  • Cleaning
  • Clear Aperture
    ≥central 80% of dimensions
  • Damage Threshold
    30 W/cm2 CW, typical
  • Thickness
    0.99-4.19 mm