Dust Protection
The camera housing is designed to prevent dust from falling directly onto the sensor's protective glass surface. In color models, this is achieved by placing an IR cut-off filter that sits above the surface of the sensor's glass. A removable plastic retainer keeps this glass/filter system in place. By increasing the distance between the imaging surface and the location of the potential dust particles, the likelihood of interference from the dust (assuming non-collimated light) and the possibility of damage to the sensor during cleaning is reduced.
Removing the IR filter from a color camera |
Selecting a lens for your camera |