Long wavepass filters are designed to achieve efficient separation of adjacent spectral bands. The cut-on edge of the filter may be located between 0.85 and 11 microns
Transmission
>90%
at wavelengths longer than the cut-on edge.
Extent of transmission region is typically in the ratio of 2:1
Attenuation
<0.1%
at wavelengths shorter than the cut-on edge.
Edge Slopes
3%-5% typically
Environmental Properties
Adhesion
MIL-C-48497A, 08/09/1980, para 4.5.3.1
Tape test
Humidity
MIL-C-48497A, 08/09/1980, para 4.5.3.2
24hrs, 48°, 95% relative humidity
Abrasion
MIL-C-48497A, 08/09/1980, para 4.5.3.3
Moderate, 50 strokes with a cheesecloth