This product is a medium-wave infrared continuous zoom lens. It has the functions of ultra-large zoom ratio continuous zoom, focusing, and auxiliary non-uniformity correction.

The lens has completely independent intellectual property rights, fully self-produced design, meets military standards, has high imaging quality, good optical axis consistency, and strong environmental adaptability. It adopts a U-shaped three-fold optical path design, with a compact structure, small size, light weight, and high integration. It can be widely used in airborne night vision, vehicle-mounted monitoring, forest fire prevention, power line inspection, border patrol, anti-terrorism reconnaissance and other fields.

Lens indicators	Focal length: f=20-500mm
	F number: F/#-5.50
	Optical axis stability: ≤2.5 pixels
	Weight: ≤3kg
	Dimensions: 105mm×131mm×236mm
Main functions	RS-422 interface
	Electric zoom and focus
	Automatic zero return
	Automatic focus adjustment according to temperature
	Working parameters can be stored
	Real-time feedback of focal length during zooming process
	Lens self-test