As night falls over the city, visible-light devices are "blinded" one after another. Traffic, birds, and nearby people and trees are hidden in the darkness and glare, making it difficult for traditional surveillance to balance long-distance search with fine detail capture. To achieve all-weather, high-definition dynamic monitoring at night, a professional infrared optical lens is the core key.

    Independently developed by WH-Clear, the 25-150mm F1.4 HD uncooled long-wave infrared continuous zoom lens relies on ultimate optical performance and high-definition imaging strength to break through nighttime observation limitations. It focuses on traffic, birds, and nearby scenery in the city's nightscape, rendering both distant and near details with remarkable clarity. It is perfectly suited for diverse scenarios such as urban security patrols, high-altitude situational monitoring, and full-area dynamic control.

01 Ultra-Clear Night Vision, Discerning the Finest Dynamics

    Unlike ordinary lenses that suffer from blurry nighttime imaging, ghosting, and loss of detail, this long-wave infrared lens focuses on the conventional 8μm~12μm atmospheric infrared window, adapting to complex urban nighttime environments with maximum resistance to low light and stray light interference.

    When overlooking the city nightscape from high above, the lens continuously zooms from far to near. Distant traffic trails are gradually drawn closer and become clearly distinguishable. The outlines of vehicles shuttling across the road are well-defined, and dynamic capture is clean and crisp. After continuous zoom brings the focal length in, observation precision is instantly maximized. Vehicle details and road surface textures are fully restored, and dynamic targets in the night have nowhere to hide.

    What better demonstrates the strength of WH-Clear's lens is its nighttime dynamic capture performance. Under the dark night, a large flock of birds sweeps across the city sky. The lens can still precisely capture this fleeting, vivid motion. Flight postures are clear and transparent, and the image is clean without ghosting, outlining a lively and vivid scene amid the quiet urban night.

    At close range of just a few dozen meters, the lens also performs excellently — pedestrians' outlines and movements are clearly distinguishable, and tree branches and leaves are layered distinctly, with detail textures fully restored. This truly achieves the dual monitoring effect of long-distance search + close-range detailed observation, comprehensively safeguarding the city's nighttime security defense line.

02 Hardcore Optics, Achieving Ultra-Clear Image Quality

    The powerful night vision performance comes from solid core optical configuration. The lens features an F1.4 large aperture, ensuring sufficient infrared radiation energy collection capability and effectively improving dim nighttime images and excessive noise. It is compatible with 1280×1024, 12μm high-definition detectors, with an image plane size of 15.4mm×12.3mm, delivering higher image resolution and richer layering.

    The 25-150mm continuous zoom design covers wide, medium, and long-distance observation needs. When paired with a 1280×1024, 12μm detector, the field of view is 34.15°×27.61° (wide angle) / 5.86°×4.69° (narrow angle). It can both search traffic dynamics over a large area and focus on bird details at a fixed point. Nearby people and trees can also be clearly imaged, flexibly adapting to various high-altitude monitoring scenarios.

03 Precision-Engineered Body, Widely Adaptable to Scenarios

    In terms of structural design, the lens balances lightweight construction and professionalism. The overall weight is ≤1.8kg, and the dimensions are Φ130mm×141mm. The compact body offers strong installation adaptability and can be easily mounted on various carriers such as high-altitude gimbals, fixed watchtowers, and airborne monitoring equipment.

    The lens has a focusing range of 5m~Infinity. With a total optical length of 150.54mm, an optical back focal length of 17.13mm, and a mechanical back focal length of 10.1mm, focusing is fast and precise, and imaging is stable without deviation. It can easily handle long-distance traffic tracking and close-range capture of people and tree details, adapting to all-weather, routine urban security monitoring work.

04 Full-Area Coverage, Empowering Smart Security

    Relying on multiple advantages such as large-aperture ultra-clear night vision, flexible continuous zoom adaptability, lightweight and easy installation, and high stability and durability, this infrared zoom lens is not only suitable for monitoring urban nighttime traffic, birds, and close-range details, but can also be widely used in scenarios such as campus security, road traffic monitoring, suburban full-area patrols, and field situational monitoring. It adapts to complex environmental monitoring needs around the clock, providing reliable optical imaging support for smart security and full-area control.

    With optical strength, WH-Clear breaks through the limitations of the dark night, making every dynamic clearly observable and every monitoring task precise and efficient.