Products / MKS-Ophir / FoldIR 25-275mm f/5.5

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High Performance Infrared Zoom Lenses for UAVs and Drones: Low-SWaP, Extended-Range, Ruggedized Lenses

MKS-Ophir / FoldIR 25-275mm f/5.5

FoldIR 25-275mm f/5.5

Lightweight MWIR zoom lens for compact UAV gimbals

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FoldIR 25-275mm f/5.5

The FoldIR 25-275mm f/5.5 is a highly compact, continuous zoom MWIR lens engineered for integration into 5” (127mm) gimbal systems on UAVs and other airborne platforms. Built to match the latest 15μm pitch VGA focal plane arrays, it delivers thermal imaging performance that maximizes detection capabilities without exceeding strict size and weight limitations.

With an ultra-efficient folded optical design, the system measures just 107mm x 101.5mm x 96mm (with detector) and weighs only 302 grams—offering unmatched optical reach in a lightweight footprint.

Optimized for low-SWaP environments, the FoldIR lens combines a 25-275mm zoom range with motorized focus and zoom mechanisms, ensuring precise imaging across a range of distances. It achieves detection ranges exceeding 14.5km and maintains performance across extreme operating temperatures.

Sealed to IP67 at the front element and featuring robust RS422/RS485 interfaces, it is well-suited for ISR payloads, border monitoring, and tactical reconnaissance missions where space, weight, and imaging quality are paramount.

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