Edmund Optics Inc. Apodizing Filter Reverse Bullseye 0.04 - 2.0 OD, 25mm NT64-388

Bulls Eye Filter Type Decreases Radially from Center Reverse Bulls Eye Type Increases Radially from Center Ideal for Eliminating Intensity Variations in Optical Systems Apodizing filters are used to create an even illumination profile in an optical system. Bulls Eye type filters feature a high optical density in the center which decreases continuously to an uncoated edge, and are commonly used to flatten the intensity profile of Gaussian beams. The Reverse Bulls Eye type features a high optical density coating on the filters edge which increases continuously to an uncoated center.Our standard filters are available in 25 and 50mm diameters, with end densities of 1.0 and 2.0. For different substrates, sizes, or intensity profiles, please contact our Applications Engineering Department.