14 DISC
Integrated Indigenous Development of Germanium Lenses for Thermal Imagers
1- Thermal imaging systems deployed for surveillance, reconnaissance, targeting, and monitoring rely heavily on infrared-transmissive optical elements, particularly germanium-based lenses, to deliver clear and accurate thermal imagery. These optical components must operate efficiently in the MWIR and LWIR bands while maintaining high transmission and minimal distortion. However, many existing solutions face limitations related to optical losses, surface reflections, and environmental degradation, which can reduce overall system performance.
2- Germanium, while offering excellent infrared transmission and a high refractive index, is inherently susceptible to surface reflection losses and mechanical fragility. Without advanced coatings and protective treatments, lenses may suffer from reduced transmission efficiency, susceptibility to scratches, moisture damage, and coating delamination under harsh operating conditions. Additionally, temperature variations can introduce focus shift and optical misalignment, impacting image sharpness and detection reliability.
3- There is a need for a ruggedized, high-precision germanium optical solution with advanced anti-reflective and protective coatings tailored for field deployment. The optical system must maintain stable transmission, optical clarity, and structural integrity across diverse environmental conditions including dust, humidity, vibration, and temperature extremes.
