6mm F1.1 Long Wave 8-12um Athermalized Infrared Lens for 160x120-17um

The 6mm F/1.1 Athermalized LWIR Lens is a compact, passively temperature-compensated infrared optic designed for 160×120–17μm detectors, delivering a wide 25.5°×20° field of view that is ideal for close-range situational awareness, indoor monitoring, and short-distance target acquisition. With an outstanding >97% average transmission across the 8–12μm band and a fast F/1.1 aperture, this lens ensures exceptional thermal image brightness and contrast, while its athermalized design maintains stable focus and consistent optical performance across the –20°C to +60°C operating range—eliminating the need for manual refocusing in environments with significant temperature variations.

Weighing just 7.3g with an ultra-slim φ20mm×10mm profile and an M14×0.5 thread mount, this fixed-focus lens is purpose-built for integration into miniature thermal modules, microbolometer cores, drone payloads, and pocket-sized handheld thermal cameras. The focus range starts at just 0.3 meters to infinity, enabling both close-up inspection and general observation tasks. Optional AR coatings are available to further suppress stray light and enhance transmission, making this lens a reliable, maintenance-free solution for cost-effective and space-constrained thermal imaging systems operating in diverse environments.

Infrared Athermal Germanium Lens Parameter