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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.

Hoya Absorptive Neutral Density (ND) Filters Hoya Absorptive Neutral Density (ND) Filters
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  • 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
  • Also Available Pre-mounted in C-Mount Housings
C-Mount Absorptive Neutral Density (ND) Filters C-Mount Absorptive Neutral Density (ND) Filters
  • Pre-mounted in Engraved C-Mount Housings
  • Simplify Integration into Optical Systems
  • Optical Densities from 0.15 to 2.5
  • Also Available Unmounted
Anti-Reflection (AR) Coated HOYA Absorptive Neutral Density (ND) Filters Anti-Reflection (AR) Coated HOYA Absorptive Neutral Density (ND) Filters
  • Optical Densities from 0.1 to 4.0
  • VIS 0°, NIR I, and NIR II Coating Options
  • 12.5, 25, and 50mm Diameter Sizes
  • Uncoated HOYA or SCHOTT ND Filters Also Available

Continuously Variable Neutral Density Filters 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 Non-Reflective Neutral Density (ND) Filters
  • Prevent Unwanted Reflection Towards the Light Source
  • Spectrally Flat
  • VIS and NIR Ranges Available
Reflective Neutral Density (ND) Filters Reflective Neutral Density (ND) Filters
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
  • Spectrally Flat
  • Maximum Accuracy and Neutrality at Moderate Price
  • Use Stacks to Create Intermediate Density Values
UV-VIS Neutral Density (ND) Filters UV-VIS Neutral Density (ND) Filters
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
  • Ideal for 250-700nm Sources
  • Optical Densities Ranging from 0.3 to 3.0
VIS-NIR Neutral Density (ND) Filters VIS-NIR Neutral Density (ND) Filters
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
  • Consistent Transmission from 350 – 1100nm
  • Optical Densities from 0.1 to 3.0 Available
  • Combine Filters for Custom Optical Densities

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