Circular Variable Neutral Density Filters

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Circular Variable Neutral Density Filters
Circular ND filters provide continuously variable, linear attenuation of light by rotating the filter about its center.
Clear Aperture, % >90%
Diameter Tolerance, mm +0.0/-0.1 mm
Inside Diameter, mm 8.0 mm
Operating Wavelength Range, nm 380 nm - 2000 nm (BK7)250 nm - 2500 nm (UVFS)
Parallelism, arcsec <3 arcmin
Protective chamfers <0,25 mm x 45 deg
Surface Flatness <λ @ 632.8 nm
Surface Quality, S-D 60/40 S/D
Description

Details

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.
Features
  • Circular Variable Neutral Density filter is economical solution to attenuate light
Name Average Transmission in VIS, %Optical Density RangeSubstrate MaterialSubstrate size, mmWavelength Range, nm Price Quantity

1-CNF-1-A025

90 to 100.04 to 1.0BK7Ø25380-2000 nm
US$115.70

1-CNF-1-A050

90 to 100.04 to 1.0BK7Ø50380-2000 nm
US$170.30

1-CNF-1-A100

90 to 100.04 to 1.0BK7Ø100380-2000 nm
US$241.80

1-CNF-1-B025

90 to 100.04 to 1.0UVFSØ25250-2500 nm
US$128.70

1-CNF-1-B050

90 to 100.04 to 1.0UVFSØ50250-2500 nm
US$189.80

1-CNF-1-B100

90 to 100.04 to 1.0UVFSØ100250-2500 nm
US$302.90

1-CNF-2-A025

90 to 10.04 to 2.0BK7Ø25380-2000 nm
US$115.70

1-CNF-2-A050

90 to 10.04 to 2.0BK7Ø50380-2000 nm
US$170.30

1-CNF-2-A100

90 to 10.04 to 2.0BK7Ø100380-2000 nm
US$241.80

1-CNF-2-B025

90 to 10.04 to 2.0UVFSØ25250-2500 nm
US$128.70

1-CNF-2-B050

90 to 10.04 to 2.0UVFSØ50250-2500 nm
US$189.80

1-CNF-2-B100

90 to 10.04 to 2.0UVFSØ100250-2500 nm
US$302.90

1-CNF-3-A025

90 to 0.10.04 to 3.0BK7Ø25380-2000 nm
US$122.20

1-CNF-3-A050

90 to 0.10.04 to 3.0BK7Ø50380-2000 nm
US$183.30

1-CNF-3-A100

90 to 0.10.04 to 3.0BK7Ø100380-2000 nm
US$263.90

1-CNF-3-B025

90 to 0.10.04 to 3.0UVFSØ25250-2500 nm
US$132.60

1-CNF-3-B050

90 to 0.10.04 to 3.0UVFSØ50250-2500 nm
US$196.30

1-CNF-3-B100

90 to 0.10.04 to 3.0UVFSØ100250-2500 nm
US$309.40
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