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ND Filters

ND Filters are used to reduce transmission evenly over a range of wavelengths in a variety of applications including microscopy, imaging, or spectroscopy. ND Filters reduce the intensity of light by absorbing or reflecting an even portion of the transmitted light determined by the filter's optical density. ND Filters are available in a wide range of densities or materials that may be stacked together to increase optical density.


Absorptive Neutral Density (ND) Filters
  • Attenuates Visible Light Via Absorption, Rather than Reflection
  • Multiple Filters Can be Stacked for Increased Blocking
  • Optical Densities from 0.1 to 4.0 are Available

Continuously Variable Neutral Density Filters
  • Continuous Linear Adjustment of Optical Density
  • Use in Pairs to Control Beam Transmission
  • Ideal for 400 - 700nm

Non-Reflective Neutral Density (ND) Filters
  • Prevent Unwanted Reflection Towards the Light Source
  • Spectrally Flat
  • VIS and NIR Ranges Available
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

Reflective Neutral Density (ND) Filters
  • Spectrally Flat
  • Maximum Accuracy and Neutrality at Moderate Price
  • Use Stacks to Create Intermediate Density Values
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

UV-VIS Neutral Density (ND) Filters
  • Ideal for 250-700nm Sources
  • Optical Densities Ranging from 0.3 to 3.0

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