Request InfoReynard CorporationApodizing filters from Reynard Corp. eliminate undesirable intensity variations in optical systems. Inserting a variable transmission filter at the aperture stop modifies the diffraction pattern of a lens, and the density of the filter increases radially from the outside edge toward the center. The reduced transmission at the center of the aperture improves performance at high frequencies, and reducing transmission at the edge enhances low-frequency performance. 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