Metallic Neutral Density Filters UV-VIS-NIR

Metallic Neutral Density Filters UV-VIS-NIR

Metallic Neutral Density Filters UV-VIS-NIR

Metallic Neutral Density (ND) filters from Andover Corporation provide precise light attenuation with exceptional spectral neutrality across ultraviolet, visible, and near-infrared wavelengths. These high-quality filters employ a combination of absorption and reflection through a metal alloy coating on carefully selected substrates to reduce light intensity while maintaining spectral balance.

Unlike absorption-type filters, Andover's metallic ND filters offer greater linearity over an extended spectral range (250-2000nm), making them ideal for applications requiring consistent performance from UV through NIR. Available in a range of optical densities from 0.1 to 4.0, these filters deliver superior durability and reduced thermal effects, making them excellent for calibration, scientific measurements, low-power laser applications, and imaging systems. Custom configurations are available on both fused silica and glass substrates to meet specialized requirements across various optical wavelength regions.

  • Broadband performance from 250–2000 nm (UV–VIS–NIR)
  • Exceptional spectral linearity across extended wavelength ranges
  • Minimal thermal effects in low-power laser applications
  • High durability metallic alloy coating
  • UV-grade fused silica (quartz) substrate
  • Precise optical density control
  • High surface quality for demanding imaging systems
  • Custom size and configuration options available
  • Calibration Systems
  • Scientific Measurements
  • Research Instrumentation
  • UV Imaging Systems
  • Low-Power Laser Systems (UV–NIR)
  • Spectrophotometry
  • Optical Testing
  • Precision Light Attenuation
  • Transmitted Wavefront: λ/4
  • Parallelism: < 5 arcsec
  • Spectral Range: 250–2000 nm
  • Substrate: UV-Grade Fused Silica (Quartz)
  • Available Formats:
    • Individual filters
    • Filter sets
  • Customization Options:
    • Sizes
    • Optical Densities
    • Mounting Options
Optical Density Nominal Transmission (%) Transmission Deviation from Nominal (%)
250-400nm 400-800nm 800-2000nm
0.04 91.0 +/- 3.0 +/- 3.0 +/- 3.0
0.10 79.5 +/- 9.0 +/- 3.0 +/- 9.0
0.15 63.0 +/- 8.0 +/- 3.0 +/- 8.0
0.20 63.0 +/- 6.0 +/- 2.0 +/- 6.0
0.30 50.0 +/- 5.0 +/- 2.0 +/- 5.0
0.40 39.1 +/- 4.0 +/- 2.0 +/- 4.0
0.50 31.6 +/- 4.0 +/- 2.0 +/- 4.0
0.60 25.0 +/- 4.0 +/- 1.5 +/- 4.0
0.70 20.0 +/- 4.0 +/- 1.5 +/- 4.0
0.80 15.5 +/- 4.0 +/- 1.5 +/- 4.0
0.90 12.6 +/- 3.5 +/- 1.0 +/- 3.5
1.00 10.0 +/- 3.5 +/- 1.0 +/- 3.5
1.30 5.0 +/- 3.0 +/- 1.0 +/- 3.0
1.50 3.2 +/- 1.5 +/- 0.5 +/- 1.5
2.00 1.0 +/- 0.5 +/- 0.2 +/- 0.5
2.50 0.32 +/- 0.15 +/- 0.07 +/- 0.15
3.00 0.10 +0.08/-0.06 +/- 0.05 +/- 0.10
4.00 0.01 +/- 0.008 +0.01/-0.008 +/- 0.10
    PART NO.
    DESCRIPTION
    1 - 5 pcs.
    6 - 10 pcs.
    > 10 pcs.
    Stock Status

    010FN46-12.5

    Standard UV ND Filter, OD=0.1, 12.5mm diameter

    $101.00
    $85.00
    $72.00
    In Stock

    010FN46-25

    Standard UV ND Filter, OD=0.1, 25mm diameter

    $147.00
    $123.00
    $104.00
    In Stock

    010FN46-50

    Standard UV ND Filter, OD=0.1, 50mm diameter

    $254.00
    $213.00
    $180.00
    In Stock

    010FN46-50S

    Standard UV ND Filter, OD=0.1, 50mm x 50mm

    $254.00
    $213.00
    $180.00
    In Stock

    015FN46-12.5

    Standard UV ND Filter, OD=0.15, 12.5mm diameter

    $101.00
    $85.00
    $72.00
    In Stock

    015FN46-25

    Standard UV ND Filter, OD=0.15, 25mm diameter

    $147.00
    $123.00
    $104.00
    In Stock

    015FN46-50

    Standard UV ND Filter, OD=0.15, 50mm diameter

    $254.00
    $213.00
    $180.00
    In Stock

    015FN46-50S

    Standard UV ND Filter, OD=0.15, 50mm x 50mm

    $254.00
    $213.00
    $180.00
    In Stock

    020FN46-12.5

    Standard UV ND Filter, OD=0.2, 12.5mm diameter

    $101.00
    $85.00
    $72.00
    In Stock

    020FN46-25

    Standard UV ND Filter, OD=0.2, 25mm diameter

    $147.00
    $123.00
    $104.00
    In Stock

    020FN46-50

    Standard UV ND Filter, OD=0.2, 50mm diameter

    $254.00
    $213.00
    $180.00
    In Stock

    020FN46-50S

    Standard UV ND Filter, OD=0.2, 50mm x 50mm

    $254.00
    $213.00
    $180.00
    In Stock

    004FN46-12.5

    Standard UV ND Filter, OD=0.04, 12.5mm diameter

    $101.00
    $85.00
    $72.00
    In Stock

    004FN46-25

    Standard UV ND Filter, OD=0.04, 25mm diameter

    $147.00
    $123.00
    $104.00
    In Stock

    004FN46-50

    Standard UV ND Filter, OD=0.04, 50mm diameter

    $254.00
    $213.00
    $180.00
    In Stock

    004FN46-50S

    Standard UV ND Filter, OD=0.04, 50mm x 50mm

    $254.00
    $213.00
    $180.00
    In Stock