1. What is infrared?
In nature, where the temperature is greater than absolute zero degree dao (-273 ° C) of the object can radiate infrared, which and visible light, ultraviolet, X-rays, gamma lines, cosmic rays and radio waves together, constituting a complete and continuous electromagnetic spectrum. Its wavelength is between 0.78 μm and 1000 μm, and it is a non-visible light with a wavelength longer than that of red light.
Infrared light
2. How an infrared camera works
An infrared camera converts infrared heat radiation into a corresponding electrical signal, which is then amplified and processed into a video image that can be observed by the naked eye. In layman's terms, this means that the invisible infrared radiation is turned into a visible thermal image, and can reflect the temperature distribution of the target surface.
The working principle of infrared thermal imaging
3. Infrared thermal image Tips:
1) Thermal image reflects the distribution of infrared radiation on the surface of the object, which depends on the spatial distribution of the emissivity and temperature of the object.
2) Different manufacturers of thermal imaging cameras are preset with different color palettes, which have different effects on image color processing.
3) The image below uses the classic iron-red color palette, with yellow representing the high-temperature region and purple representing the low-temperature region.
Infrared thermal image taken by High-Tech SmartSense C series