Ruggedized lenses are designed to withstand the harsh environments of the most demanding applications. Industrial ruggedized lenses will survive shock and vibration. Ingress protection ruggedization seals assemblies from moisture. Stability ruggedization not only protects from shock and vibration damage, but also maintains the position accuracy and repeatability of the optical pointing stability. Athermalization eliminates performance changes due to swings in the operational temperature of the application environment.