Neutral density filter

Neutral density filters are reflective ND filters that are used to diffuse light intensity. The coated chrome film reduces the light by mainly reflecting and partially absorbing it.

Asahi’s ND filters are designed to provide uniform spectral performance, particularly in the VIS range, without changing the relative spectral distribution of energy. Nevertheless, they are available from the UV to the IR range, as the carrier material is quartz glass. Six different attenuation levels are available.


  • Chemistry
  • Biotechnology
  • Medical technology
  • Semiconductor industry
  • Photovoltaics and more
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    Overview of neutral density filters

    DescriptionTransmission (%) Item#
    25mm dia.
    Neutral Density Filter / 1% 1XND0001ZND0001
    Neutral Density Filter / 3% 3XND0003ZND0003
    Neutral Density Filter / 6% 6XND0006ZND0006
    Neutral Density Filter / 12% 12XND0012ZND0012
    Neutral Density Filter / 25% 25XND0025ZND0025
    Neutral Density Filter / 50% 50XND0050ZND0050

    Special cuts or customized filters with other passages or blocking ranges can be made. Please contact your technical advisor for more information.