FRESNEL LENS USED IN INFRARED SENSOR SYSTEM
Infrared sensing systems can be divided into five categories according to their functions. They are measurement systems that use infrared as the medium. According to the detection mechanism, they can be divided into photon detectors and thermal detectors. Infrared sensing technology has been used in modern science and technology, national defense, industry and agriculture, etc. It has been widely used.
Infrared technology has developed to this day and is already well known to everyone. This technology has been widely used in modern technology, national defense technology, industrial and agricultural technology and other fields. Infrared sensing system is a measurement system using infrared as the medium, which can be divided into functions Five categories: (1) Radiometer, used for radiation and spectrum measurement; (2) Search and tracking system, used to search and track infrared target, determine its spatial position and track its movement; (3) Thermal imaging system , It can produce the distribution image of the entire target's infrared radiation; (4) Infrared ranging and communication system; (5) Hybrid system refers to a combination of two or more of the above various systems.