Providing constant, ultra-broadband performance from 190–1,700 nm, TECHSPEC® UV-NIR Neutral Density Filters exhibit parallelism of less than 5 arcseconds. Units are available in 18 models with diameters of 12.5, 25, and 50 mm and optical densities of 0.3, 0.5, 1.0, 1.3, 1.5, and 2.0. Suitable for spectroscopy, machine vision, and ellipsometry applications, filters can be stacked to create intermediate density values.
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