Neutral Density Filters: Absorptive/Reflective
These absorptive neutral density filters (unlike metallic filters) are manufactured from a family of Schott glasses exhibiting various internal absorption coefficients. By using three different glasses (each with a unique absorption) that have spectrally flat absorption coefficients and by differing the filter thicknesses, we are able to manufacture a progressively more absorptive series of neutral density filters. All data provided in the tables below is specified at 546nm.
Unmounted Absorptive Neutral Density Filters
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Features
  • Four Sizes Available:
    • Ø1/2"
    • Ø25 mm
    • Ø2"
    • 2" x 2"
  • Optical Densities
    • 0.1 to 6.0 for Ø1/2", Ø2", and 2" x 2" Filter Options
    • 0.1 to 8.0 for Ø25 mm Filters
  • Ideal for Low-Power Applications (<1 W, see the Specs Tab for Additional Details)
  • Absorptive Glass Reduces Multiple Reflections
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Unmounted Ø25 mm Absorptive Neutral Density Filters
Unmounted 2" x 2" Absorptive Neutral Density Filters
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