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Neutral Density (ND) Filters

Edmund Optics offers a wide selection of neutral density (ND) filters designed to reduce light intensity while maintaining the spectral integrity of the transmitted light. Available in absorptive and reflective designs, these ND filters support applications such as optical and imaging setups, Spectroscopy, and laser systems. With optical densities ranging from 0.04 to ≥5.0, these filters provide accurate, repeatable attenuation across the UV, VIS, and NIR spectral ranges.

Our offering also includes continuously variable ND filters, which enable smooth attenuation adjustments without swapping optics—ideal for dynamic light control in lab and industrial environments. Whether you're optimizing a fluorescence setup or integrating them into a laser-based system, Edmund Optics provides precision-engineered ND filter solutions built for performance and reliability.

Filter
PMMA-Laminated Wratten ND Filters PMMA-Laminated Wratten ND Filters
  • One-Side Laminated for Stability
  • Available in 25mm and 48mm Sizes
  • Kodak Filter No. 96
  • Lightweight Alternative to Traditional Glass ND Filters
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
UV-NIR Neutral Density (ND) Filters UV-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
  • Constant Transmission from 190 – 1700nm
  • Can be Stacked to Create Intermediate Density Values
  • Multiple Optical Densities Available
Near-IR (NIR) Neutral Density (ND) Filters Near-IR (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
  • Ideal for NIR Wavelengths 700-1100nm
  • Optical Densities Ranging from 0.3 to 3.0
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
Hoya Absorptive Neutral Density (ND) Filters Hoya Absorptive Neutral Density (ND) Filters
Top Seller
  • 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
SCHOTT NG Absorptive Neutral Density (ND) Filters SCHOTT NG Absorptive Neutral Density (ND) Filters
  • Tightly Controlled Transmission Specifications
  • NG4, NG9, or NG11 Glass Types
  • Specified Optical Densities from 0.15 to 5.0
  • Provide Even Light Attenuation in the Visible Spectrum
  • SCHOTT NG Gray Glass Also Available
Kodak Wratten 2 Neutral Density Filters Kodak Wratten 2 Neutral Density Filters
  • Available in Large Sizes
  • Easily Cut for Custom Sizing
  • Kodak Filter No. 96
Infrared (IR) Neutral Density (ND) Filters Infrared (IR) Neutral Density (ND) Filters
  • Spectrally Flat from 2μm to 14μm
  • Precision Germanium Substrate
  • Due to material supply chain disruptions with germanium, there may be increased lead times and price changes on our germanium products. For more information, please contact our customer service team.
VUV Neutral Density (ND) Filters VUV Neutral Density (ND) Filters
  • Consistent Transmission from 120-200nm
  • Optical Densities Ranging from 0.3 to 3.0
  • Ideal for Raman Spectroscopy and Excimer Lasers

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

New Precision Anti-Reflection (AR) Coated Absorptive Neutral Density (ND) Filters Precision Anti-Reflection (AR) Coated Absorptive Neutral Density (ND) Filters
SCHOTT NG Gray Glass Neutral Density (ND) Filters SCHOTT NG Gray Glass Neutral Density (ND) Filters
  • Tightly Controlled Thickness Specifications
  • Standard Thicknesses of 1, 2, and 3mm
  • Even Light Attenuation in the Visible Spectrum
  • NG1, NG3, NG4, NG5, NG9 and NG11 Glass Types Available
  • Precision SCHOTT NG Glass Filters Also Available
SCHOTT Calibrated Neutral Density (ND) Filters SCHOTT Calibrated Neutral Density (ND) Filters
  • Calibrated for Specific Wavelengths
  • Optical Densities Ranging from 0.3 to 3.0
  • NG3, NG4, NG5, NG9, or NG11 Glass Types
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
Machine Vision Absorptive Neutral Density (ND) Filters Machine Vision Absorptive Neutral Density (ND) Filters
  • Multiple Mounting Sizes and Threads Available
  • 40-20 Surface Quality
  • Helps Minimize Pixel Saturation
Mounted Absorptive Neutral Density (ND) Filters Mounted Absorptive Neutral Density (ND) Filters
  • Spectrally Flat from 400-700nm
  • Homogeneous Glass: Blocks by Absorption
  • Light/Exposure Control for Imaging
M25.5 and M30.5 Mounted Neutral Density Filters M25.5 and M30.5 Mounted Neutral Density Filters
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
  • VIS and NIR ND Filters, Mounted for Imaging Lenses
  • Variety of Optical Densities
  • Stack Filters Together for Custom Transmission Profiles
Variable Neutral Density (ND) Machine Vision Filters Variable Neutral Density (ND) Machine Vision Filters
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
Stepped Neutral Density (ND) Filters Stepped Neutral Density (ND) Filters
  • 11 Discrete Density Steps
  • Design Wavelength of 400 - 700nm
  • Density Neutrality of ±5%
Circular Variable Neutral Density (ND) Filters Circular Variable Neutral Density (ND) Filters
  • Continuously Variable Over 270°
  • Spectrally Flat from 400-700nm
  • Mounted and Unmounted Versions Available
Mounted Circular Neutral Density (ND) Filters Mounted Circular Neutral Density (ND) Filters
  • Complete Package
  • Smooth Rotation
  • Stainless Steel Post is Included
Continuously Variable Apodizing Filters Continuously Variable Apodizing Filters
  • Bull’s Eye Filter Type Decreases Radially from Center
  • Reverse Bull’s Eye Type Increases Radially from Center
  • Ideal for Eliminating Intensity Variations in Optical Systems
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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