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 Neutral Density Filter |
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| Neutral density filters or ND filters are “grey” filters. They are used to reduce transmission and increase contrast. Kupo neutral density filter is ideal because it reduces light of all wavelengths or colors equally. |
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Reference color #LEE 209
400~700nm Tavg=40% +/- 3%
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Reference color #LEE 210
400~700nm Tavg=20% +/- 3% |
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Reference color #LEE 211
400~700nm Tavg=6.5% +/- 1.5% |
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Reference color #LEE 299
400~700nm Tavg=2.5% +/- 1% |
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| See Glass Substrates Here |
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| Technical Specification |
| Humidity, Adhesion, and Abrasion Resistance is based on MIL-M-13508C regulations. |
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Custom Design
Flexibility
Kupo's experienced engineers are available to customize the louvers based on the specs you require.
Any request of a specified size and shape is welcome.
Please contact Kupo for further information! |
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