Recently, we conducted outdoor field tests with our new 21-460mm F4.0 MWIR continuous zoom lens, successfully completing real-world evaluation. From wide-area building complex scanning to ultra-long-distance structural detail locking, this lens—covering the 3.7–4.8μm MWIR band with a 22× ultra-high zoom ratio—delivered professional performance in an authentic urban environment.

The outdoor test video released today reproduces the lens’s imaging performance at different observation distances and zoom magnifications. Featuring city landmarks, curtain wall structures, and industrial facilities as the backdrop, the video fully demonstrates the real-world capabilities of the 21-460mm F4.0 cooled MWIR continuous zoom lens, highlighting three core advantages that make the technical strength visible and tangible:

22× Continuous Zoom, Wide-Area Search and Long-Range Lock-In: The zoom process is smooth throughout. From the 21mm wide-angle end capturing macro thermal radiation of entire building clusters, to the 460mm telephoto end delivering precise thermal imaging of curtain wall joints and rooftop equipment hundreds of meters away, the image remains consistently sharp and clear—perfectly embodying the “high-definition imaging across the full zoom range” feature.

F4.0 Constant Aperture, Uniform Illumination Across the Full Field: With a constant F4.0 aperture throughout the zoom range, the lens ensures uniform edge illumination and no vignetting. Even in complex radiation environments where building shaded sides and shadow areas intersect, the lens maintains stable, high-contrast output.

The 21-460mm F4.0 MWIR continuous zoom lens operates in the 3.7–4.8μm band with a constant F4.0 aperture, compatible with mainstream cooled MWIR detectors. The 21mm wide-angle end offers a broad field of view, efficiently enabling large-scale thermal radiation screening of building complexes. The 460mm telephoto end achieves ultra-long-distance narrow-field observation, allowing precise extraction of subtle thermal signatures from distant targets. The zoom process is continuous, smooth, and step-free, enabling both macro search and long-range tracking without losing the target. The lens incorporates advanced optical design, effectively suppressing aberrations while achieving a 22× ultra-high zoom ratio, ensuring sharp, chromatic-aberration-free images across the entire focal range.

In terms of reliability, the lens is specifically designed for all-weather building inspection, offering excellent environmental adaptability. It supports a wide operating temperature range and features a high-protection-grade design, resisting sand, dust, rain, fog, and extreme temperature variations, ensuring stable operation in harsh outdoor conditions. With outstanding long-range detection capability, the lens—when paired with a cooled detector—achieves detection distances of several kilometers for typical targets, making it suitable for applications such as facade void surveys on high-rise buildings, remote inspection of industrial facilities, and urban security monitoring. The lens features a compact structure and standardized interfaces, allowing flexible integration into electro-optical turrets, vehicle-mounted platforms, remote fixed monitoring systems, and more, providing a stable and reliable optical solution for all-weather, all-terrain infrared reconnaissance and inspection.

Our company remains committed to advancing high-end optical technology, increasing R&D investment, deepening technology transfer, and continuously launching more competitive optical products in MWIR, LWIR, visible light, laser, and other fields. Through real-world testing, technical interpretation, and other formats, we will demonstrate our corporate strength and provide global customers with superior full-spectrum optical solutions, supporting optical technology upgrades and intelligent transformation in high-tech areas such as industrial inspection, urban security, and scientific research.