Janos  Infrared optics help see beyond visible light. Janos Technology, LLC. is a trusted leader in advanced infrared optical lens, coating and assemblies, meeting the most stringent technical and environmental requirements. We design, engineer and manufacture our thermal imaging lens assembles in Keene, NH. Since 1970, Janos has been providing solutions for industrial thermography, defense, security, analytical instruments, and thermography. We are here to help our end users see in continuingly more challenging environments.