Circular Variable Neutral Density Filters

Circular Variable Neutral Density Filters

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Diameter tolerance +0.0/-0.1 mm
Clear Aperture >90%
Inner diameter 8.0 mm
Surface Quality 60/40 S/D
Surface Flatness <λ @ 632.8 nm
Parallelism error <3 arcmin
Protective chamfers <0,25 mm x 45 deg
Operating wavelength range 380 nm - 2000 nm (BK7)
250 nm - 2500 nm (UVFS)
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Attention! You can customise this product to your needs.
Transmitted intensity varies as a function of the optical density range. The filter can be used for white light as well as for lasers. A large finite aperture can be attenuated by counter rotating two filters in series. Sizes are available from 25 mm to over 100 mm in diameter.
varna Circular Variable Neutral Density filter is economical solution to attenuate light

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Optical density range Average transmission in VIS Substrate material Wavelength range Substrate size, mm Delivery Product ID Price Action
0.04 to 1.0 90% to 10% BK7 380-2000 nm Ø25 2-4 weeks 1-CNF-1-A025 89 €
0.04 to 1.0 90% to 10% BK7 380-2000 nm Ø50 2-4 weeks 1-CNF-1-A050 131 €
0.04 to 1.0 90% to 10% BK7 380-2000 nm Ø100 2-4 weeks 1-CNF-1-A100 186 €
0.04 to 1.0 90% to 10% UVFS 250-2500 nm Ø25 2-4 weeks 1-CNF-1-B025 99 €
0.04 to 1.0 90% to 10% UVFS 250-2500 nm Ø50 2-4 weeks 1-CNF-1-B050 146 €
0.04 to 1.0 90% to 10% UVFS 250-2500 nm Ø100 2-4 weeks 1-CNF-1-B100 233 €
0.04 to 2.0 90% to 1% BK7 380-2000 nm Ø25 2-4 weeks 1-CNF-2-A025 89 €
0.04 to 2.0 90% to 1% BK7 380-2000 nm Ø50 2-4 weeks 1-CNF-2-A050 131 €
0.04 to 2.0 90% to 1% BK7 380-2000 nm Ø100 2-4 weeks 1-CNF-2-A100 186 €
0.04 to 2.0 90% to 1% UVFS 250-2500 nm Ø25 1-3 days 1-CNF-2-B025 99 €
0.04 to 2.0 90% to 1% UVFS 250-2500 nm Ø50 2-4 weeks 1-CNF-2-B050 146 €
0.04 to 2.0 90% to 1% UVFS 250-2500 nm Ø100 2-4 weeks 1-CNF-2-B100 233 €
0.04 to 3.0 90% to 0.1% BK7 380-2000 nm Ø25 2-4 weeks 1-CNF-3-A025 94 €
0.04 to 3.0 90% to 0.1% BK7 380-2000 nm Ø50 2-4 weeks 1-CNF-3-A050 141 €
0.04 to 3.0 90% to 0.1% BK7 380-2000 nm Ø100 2-4 weeks 1-CNF-3-A100 203 €
0.04 to 3.0 90% to 0.1% UVFS 250-2500 nm Ø25 2-4 weeks 1-CNF-3-B025 102 €
0.04 to 3.0 90% to 0.1% UVFS 250-2500 nm Ø50 2-4 weeks 1-CNF-3-B050 151 €
0.04 to 3.0 90% to 0.1% UVFS 250-2500 nm Ø100 2-4 weeks 1-CNF-3-B100 238 €

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You can customise this product to your needs. If you do not find suitable specifications for your application please contact us for custom solution.

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