Folded optics designs better utilize the available volume for both lens and detector modules. This reduction in size is accomplished by “doublefolding” the lens optical axis back on itself by two, reflecting mirrors at 45° AOI, significantly reducing the overall length of IR lens.
The new FoldIR product family of zoom lenses, developed by MKS Ophir, utilizes a double-folded design to generate small-size, lightweight, small aperture and long vision (DRI) ranges. These continuous zoom lenses enable near diffractionlimit performance in harsh environments, addressing challenges such as line-of sight (LOS) stabilization and athermalization. This makes them ideal for advanced UAS IR cameras, creating crisp, clear images in a wide range of conditions.
Image 2: IR thermal image taken with SupIR 16-180mm f/3.6 VGA format continuous zoom lens from 6.1km distance, via Ventus Micro by Sierra Olympia Technologies Inc.