Patent technology analysis of infrared camouflage cloth
The textile industry is a traditional industry in China. In recent years, influenced by cheap labor markets such as Southeast Asia, the textile industry is transforming from labor-intensive to innovative and technological. Among them, infrared camouflage fabrics are innovative textiles with extremely high technological content and are highly valued by the military of various countries.
Camouflage printed fabrics are widely used in the military field, such as combat uniforms, sleeping bags, tents, etc., and are designed to blend into the surrounding environment such as deserts, forests or grasslands. However, traditional camouflage fabrics are only effective under visible light and cannot provide camouflage under advanced surveillance technologies such as infrared detection. Therefore, the development of infrared camouflage printed fabrics has become a new basic requirement for modern military camouflage textiles. High-performance infrared camouflage fabrics can not only improve the survival, safety and combat capabilities of the army, but also need to have near-infrared and thermal infrared camouflage capabilities, which reflects the progress of detection technology.
Principle of infrared camouflage
Infrared is an electromagnetic wave with a wavelength range of 0.76 to 1000 microns (μm). Any object with a temperature above absolute zero will emit infrared rays. In the military field, infrared detection mainly collects signals in the 3-5μm and 8-14μm bands, and uses thermal imaging technology for all-weather target reconnaissance.
The theoretical basis of thermal imaging is the Stefan-Boltzmann law. The working principle of thermal imaging is to use the difference in infrared radiation between the target and the background due to changes in temperature and emissivity. These distribution differences are the key factors in determining the efficiency of infrared detection. Therefore, the purpose of infrared camouflage is to make the infrared radiation characteristics of the target consistent with those of the background. This alignment helps to minimize or eliminate the infrared radiation contrast between the target and the surrounding environment, thereby achieving camouflage and evading infrared detection.