The role and status of thermal imaging technology Thermal imaging technology has three major functions: (1) extending the observation range of the human eye to the infrared region of the spectrum; (2) greatly improve the sensitivity of the human eye; (3) Obtained information about the objective world and the thermal movement. The rapid development of modern science and technology has revolutionized thermal imaging technology. (1) Realizing thermal imaging of long-wave infrared and medium-wave infrared, realizing night vision in the true sense; (2) The successful development of the second generation of thermal imaging products, mass production, has been widely used in land, sea, air, and sky; (3) Realizing uncooled thermal imaging, the product enters batch production, which greatly reduces the price of the thermal imager; (4) The development of complex and powerful information processing technology enables night vision technology to be more widely used.