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Neutral density (ND) Filter

Neutral density (ND) Filters are used to attenuate incident radiation without altering its spectral distribution.The neutral density value of an ND filter is related to the transmittance by D=Log(1/T) (Optical Density:D,Transmittance:T).

 Absorption glass ND Filter:



Metallic Coated Neutral Density Filter:

Metallic Coated ND Filters are glass or quartz substrates with a precision metallic coating (Inconel) that provides uniform attenuation across a wide spectral range.



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