Qioptiq Datasheets for Neutral Density Filters

Neutral density filters are designed to reduce transmission evenly across a portion of the spectrum. They are slightly sensitive to angles but they are much more forgiving than interference filters.
Neutral Density Filters: Learn more

Product Name Notes
Attenuate polychromatic light without altering its spectral distribution Transmittance τ = ΦT / Φ0 Optical density D = log 1 / τ Metallic films vacuum-evaporated onto glass substrates...
Fabricated from neutral-density filter glass Cemented onto compensating plate Transmittance range of 1 - 80 % Faces parallel to within 10 arcmin