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Knowledge Center/ Glossary/ Neutral Density Filter (ND)

Neutral Density Filter (ND)

A type of filter that yields a constant attenuation, or optical density, value over a range of wavelengths (i.e. spectrally flat). It is useful for attenuating, or reducing, the amount of light in a system.

See also Filter , Continuously Variable Apodizing Filter , Optical Density (OD)

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