The role of ir imager
The ir imager includes linear type in one-dimensional arrangement and surface type in two-dimensional arrangement. The one-dimensional image sensor is scanned by a mirror or the like, and when mounted on an artificial satellite such as a weather satellite or an earth observation satellite, the artificial satellite itself scans by rotating or moving. Generally, one-dimensional image sensors can achieve higher resolution than two-dimensional image sensors.
The ir imager can detect and photograph far-infrared rays emitted from objects or living organisms that are heat sources by using video equipment that detects the far-infrared region. Since the subject itself is identified as a luminous body, it can be identified without any external light source. Far-infrared wavelengths are longer than near-infrared wavelengths, so they have high transmittance and reflectivity even if the surface of the reflective surface is somewhat rough, however, video equipment has a very low resolution and can be seen when shooting movies visible light. Afterimages stay longer than other cameras. An imaging device that calculates and displays temperature distribution by analyzing the intensity of far infrared rays is thermal imaging (thermal imaging). Typically, high temperature parts are shown in red, while low temperature parts are shown in blue.