This infrared lens is manufactured with cost-effective chalcogenide glass molding process, featuring 2.6mm mechanical back focal length and 4mm maximum imaging circle, with horizontal field of view up to 55.8°, adaptable to various thermal imaging applications. Relative illumination up to 80%, uniform edge brightness, TV distortion controlled within -12%, stable imaging. Suitable for drones, handheld temperature measurement devices, etc., specially designed for overseas B-end customers, balancing performance and cost advantages.