Linear Variable Density Filters

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Linear Variable Density Filters
Designed to be spectrally flat from 400 to 700 nm or 1300 - 1600nm they provide excellent attenuation for spectrometers and other optical instruments.
Diameter Tolerance, mm ±0.2 mm
Material B-270, BK7
Parallelism, arcsec ±3 arc min


Transmitted intensity varies as a function of the optical density range. The filter can be used for white light as well as for lasers.
  • Circular Variable Neutral Density filter is economical solution to attenuate light