The advantages of infrared thermal imagers are also very obvious. Because the infrared thermal imager is imaged by collecting the infrared radiation energy of the target, it can work normally in the day or night; in the harsh rain and snow weather environment, it can also take advantage of the long infrared wavelength to use Thermal imager for observation. For concealed targets, because the infrared thermal imager is not detected by light, it will achieve the purpose of identifying camouflage.

Although our impression of infrared thermal imagers generally stays on body temperature detection, infrared thermal imagers also have many applications in other fields, such as long-distance detection and inspection of high-altitude pollution sources in chemical enterprises and volatile organic compound emissions from the top of tank farms. Imagers can provide temperature measurement and thermal state analysis, which facilitates long-distance, non-contact on-site law enforcement inspections for law enforcement officers; for example, in the medical field, infrared thermal imagers can collect human infrared radiation through thermal imaging diagnostic systems, and finally convert them into Images of different colors, thus reflecting the nature, degree, and scope of pain.