The FIR-ND20 Infrared Neutral Density Filter is a 1 inch (25.4 mm) diameter infrared neutral density filter with an optical density of 2.0, and ±3% 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.
| Newport MKS | |
|---|---|
| Product Category | Optical Filters |
| Product Number | FIR-ND20 |
| Product Name | Infrared Neutral Density Filter, 25.4 mm, 2.0 OD, ±3% Tolerance |
| Filter Type | Neutral Density Filters |
