Neutral density filters attenuate light by a constant amount that is, to first order, independent of the wavelength neutral density filters are designed to equally reduce the transmission over a specified spectrum, either by absorption or reflection. Knight Optical stock several ranges for your specific application.
| Name | Density @ 546nm | Transmission (%) @ 546nm | Diameter (mm) | Length (mm) | Width (mm) | Thickness (mm) | Material/Equivalent | Type | Price | Buy |
| FNU0450 pdf | 50 | 50 | 2 | UV Fused Silica | Metallic ND Filter |
US$118.15
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| FNU0425 pdf | 25 | 2 | UV Fused Silica | Metallic ND Filter |
US$74.37
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| FNU0350 pdf | 50 | 50 | 2 | UV Fused Silica | Metallic ND Filter |
US$118.15
|
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| FNU0325 pdf | 25 | 2 | UV Fused Silica | Metallic ND Filter |
US$74.37
|
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| FNU0313 pdf | 12.5 | 2 | UV Fused Silica | Metallic ND Filter |
US$35.03
|
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| FNU0250 pdf | 50 | 50 | 2 | UV Fused Silica | Metallic ND Filter |
US$118.15
|
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| FNU0225 pdf | 25 | 2 | UV Fused Silica | Metallic ND Filter |
US$74.37
|
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| FNU0150 pdf | 50 | 50 | 2 | UV Fused Silica | Metallic ND Filter |
US$118.15
|
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| FNU0125 pdf | 25 | 2 | UV Fused Silica | Metallic ND Filter |
US$74.37
|
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| FNU00350 pdf | 50 | 50 | 2 | UV Fused Silica | Uncoated UV Fused Silica |
US$56.02
|
