Neutral Density Filter, 0.04 Optical Density, 1.0 in. Diameter

Technical Specs

  • Size
    Ø25.4 mm
  • Wavelength Range
    400-2000 nm
  • Optical Density
    0.04
  • Transmission
    91%
  • Transmission Tolerance
    ±1%
  • Material
    Schott Borofloat Glass
  • Thickness
    1.1 mm
  • Surface Flatness
    1 λ @ 633 nm
  • Surface Quality
    40-20 scratch-dig
  • Clear Aperture
    21.5 mm
  • Parallelism
    0.5 mrad