Neutral Density Filter, Infrared, 25 mm, 2.0 OD, ±0.25% Tolerance

The NDIR10-20 Infrared Neutral Density Filter is a 1 inch (25.0 mm) diameter filter with an optical density of 2.0, and ± 0.25 % transmittance tolerance. Optimized for 2 to 5 μm, this filter attenuates IR radiation from 2 to 14 μm. It is made from a germanium substrate and is coated with a spectrally neutral vacuum deposited metal alloy reflective coating.

Specifications

Technical Specs

Size
Ø25.0 mm
Wavelength Range
2000-5000 nm
Optical Density
2
Transmission
1.0%
Transmission Tolerance
±0.25%
Material
Germanium
Coating Type
Metallic Neutral Density

Thickness
1.0 mm
Thickness Tolerance
± 0.2 mm
Surface Flatness
3-5 λ per inch
Surface Quality
60-40 scratch-dig
Clear Aperture
90 % of central diameter
Parallelism
< 10 arc minute

Size
Ø25.0 mm
Wavelength Range
2000-5000 nm
Optical Density
2
Transmission
1.0%
Transmission Tolerance
±0.25%
Material
Germanium
Coating Type
Metallic Neutral Density

Thickness
1.0 mm
Thickness Tolerance
± 0.2 mm
Surface Flatness
3-5 λ per inch
Surface Quality
60-40 scratch-dig
Clear Aperture
90 % of central diameter
Parallelism
< 10 arc minute

Resources & Downloads

3D Product Models

Other

NDIR10-20 RoHS Certificate(705.2 kB, PDF)

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