Manufacturer Purges Optoelectronic Systems of Moisture Problems
Most of the moisture is present in hygroscopic materials, such as printed circuit boards or plastic components. The resulting condensation can fog mirrors and lenses, effectively blinding the equipment in potentially critical situations. Condensation also causes corrosion, affects performance and shortens the life span of an optoelectronic system.
To prevent moisture-related problems, manufacturers of laser, imaging, camera and other optical systems are increasingly mandating that the systems receive a nitrogen purge before field use. The process involves introducing ultra dry nitrogen (having a dew point of -94 F) under pressure into the system’s internal cavity or enclosure to create a dry environment.