Neutral Density Filters

Thorlabs offers both Absorptive and Reflective Neutral Density Filters in unmounted and mounted designs, with optical densities from 0.1 to 6.0. Absorptive neutral density filters are available for the visible or near IR ranges and an AR-coated versions are also available. Reflective neutral density filters are available with a N-BK7, UV Fused Silica, or ZnSe substrate. Links to our variable neutral density filters, as well as filter kits, are also provided.