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Infrared neutral density filters
from AndoverMetallic-coated neutral density (ND) filters obtain their optical density from a metal alloy coating on a substrate determined by the wavelength region of interest. Unlike the all-dielectric or absorption type, the metallic type ND filter employs a combination of absorption and reflection to reduce the intensity of light.
- Provides attenuation with greater linearity over a wide spectral range
- Delivers superior durability
- Custom substrates available
Specifications
| General Specifications | |
|---|---|
| Dimensional Tolerances | ±0.2 mm |
| Thickness | 1.0 mm |
| Clear Aperture | 90% of outside dimension |
| Surface Quality | 80/50 per MIL-0-13830B |
| Coating Quality | 80/50 per MIL-0-13830B |
| Coating Adherence | Per MIL-M-13508C |
| Humidity | Per MIL-STD-810F |
| Substrate Material | Germanium |
| Optical Quality | Flatness of 3-5 waves per inch and parallelism of 10 arc minutes or better |
| Mechanical | Unmounted |
| Optional | Mounted in threaded ring |
Custom IR Neutral Density Filter Specifications
| Size, Shape & Part Number | ||||
|---|---|---|---|---|
| Optical Density | Nominal Transmittance (%) | Max. Deviation From Nom. (%) | 25 mm Ø | 50 mm Ø |
| 0.3 | 50.12 | ± 4.0 | 030FNIR-25 | 030FNIR-50 |
| 0.5 | 31.62 | ± 2.0 | 050FNIR-25 | 050FNIR-50 |
| 0.6 | 25.00 | ± 2.0 | 060FNIR-25 | 060FNIR-50 |
| 0.9 | 12.60 | ± 1.5 | 090FNIR-25 | 090FNIR-50 |
| 1.0 | 10.00 | ± 1.5 | 100FNIR-25 | 100FNIR-50 |
| 1.3 | 5.00 | ± 1.25 | 130FNIR-25 | 130FNIR-50 |
| 1.5 | 3.20 | ± 0.7 | 150FNIR-25 | 150FNIR-50 |
| 2.0 | 1.00 | ± 0.25 | 200FNIR-25 | 200FNIR-50 |
| 3.0 | 0.10 | + 0.08/-0.05 | 300FNIR-25 | 300FNIR-50 |
| Set of nine filters (includes storage box) | FNIR-SET-25 | FNIR-SET-50 | ||
Applications
Calibration
Attentuation
Low-Power Lasers
Scientific Measurements and Research
Machine Vision and IR Imaging Applications
Contact
Ing.
Fabrizio
Renzi
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Contact
Quantum Design s.r.l.
Via Francesco Sapori, 27
00143 Roma
Italy
| Phone: | +39 06 5004204 |
| Fax: | +39 06 5010389 |
| E-mail: | italy@qd-europe.com |
