What is infrared thermal imaging?
The light is familiar to everyone. What is light? Light is visible light, electromagnetic waves that the human eye can feel. The wavelength of visible light is: 0.38-0.78 microns. Electromagnetic waves shorter than 0.38 microns and electromagnetic waves longer than 0.78 microns cannot be felt by the human eye. Electromagnetic waves shorter than 0.38 microns are outside the visible light spectrum purple, called ultraviolet rays, and electromagnetic waves longer than 0.78 microns are outside the visible light spectrum red, called infrared rays. Infrared, also known as infrared radiation, refers to electromagnetic waves with a wavelength of 0.78 to 1000 microns. The part with a wavelength of 0.78 to 2.0 microns is called near infrared, and the part with a wavelength of 2.0 to 1000 microns is called thermal infrared.
The camera images get the photos, and the TV camera images get the TV images, which are all visible light images. In nature, all objects can radiate infrared, so the infrared difference between the target itself and the background is measured by a detector and different infrared images can be obtained. The image formed by thermal infrared is called a heat map.
The thermal image of the target is different from the visible light image of the target. It is not the visible image of the target that the human eye can see, but the image of the temperature distribution of the target surface. In other words, infrared thermal imaging prevents the human eye from directly seeing the surface temperature of the target The distribution becomes a thermal image representative of the temperature distribution on the target surface that can be seen by the human eye.
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