Infrared optics and lenses
High-performance optics and lenses are critical to unlocking the full potential of any thermal imaging system.
From maximising transmission in the infrared spectrum to optimising field of view, focal length and resolution, the right optical design ensures accurate temperature measurement, enhanced image clarity and reliable performance in demanding environments. Whether for industrial inspection, medical diagnostics, security, transportation or defence applications, selecting the correct lens configuration is essential to achieving consistent, high-quality thermal data.
We offer a comprehensive portfolio of infrared optics and thermal imaging lenses to support a wide range of applications. Our range includes fixed and motorised lenses, custom optical assemblies, wide-angle and telephoto solutions, and specialist materials optimised for long-wave and mid-wave infrared performance. Working in partnership with leading global manufacturers, and supported by our in-house technical expertise, we help engineers select and integrate the right optical solution for their specific thermal imaging requirements.
Our team can also advise on design trade-offs, lens coatings, and environmental considerations to ensure your system performs reliably in real-world conditions.

Germanium solutions
Germanium remains one of the most widely used materials in infrared optics due to its excellent transmission in the long-wave infrared spectrum and robust mechanical properties. Acal BFi is able to offer Germanium imaging lenses and Germanium windows with short delivery times and without export licence restrictions, helping to reduce lead times and simplify procurement for your project. These high-quality Germanium components are ideal for applications requiring precise thermal detection, whether in industrial monitoring, research, or security systems.
If you are developing a new thermal imaging system or looking to optimise an existing design, our experts are here to help. Get in touch with Acal BFi to discuss your application and discover how our optics and lenses portfolio can enhance your next project.
