- Provides attenuation with greater linearity over a wide spectral range
- Delivers superior durability
- Custom substrates available
IR Neutral Density Filter Sets
For your convenience and ecomony, Andover offers its metallic-coated infrared neutral density filters (IR ND filters) in sets. The cost is 10% lower than purchasing the individual parts, and they are supplied with a sturdy, hardwood storage case.
Andover's IR ND filters exhibit outstanding spectral neutrality, outperforming all others on the market. General specificatiosn are listed below. For individual part specifications,.
|Min. Clear Aperture:||90% of outside dimension|
|Surface Quality:||80/50 per MIL-O-13830B|
|Coating Quality:||80/50 per MIL-O-13830B|
|Coating Adherence:||Per MIL-M-13508C|
|Flatness:||3–5 waves per 25mm|
|Parallelism:||10 arc minutes or better|
Note: Custom sizes and spectral characteristics available on request.for a quotation.