In nature, in addition to the light visible to the human eye (usually called visible light), there are also invisible light such as ultraviolet rays and infrared rays. Objects in nature radiate electromagnetic waves (infrared rays) as long as their temperature is higher than absolute zero (-273°C), so infrared rays are the most widespread electromagnetic waves in nature, and thermal infrared rays will not be absorbed by the atmosphere, smoke, cloud, fog etc.
In theory, as long as the corresponding relationship between the radiation energy and temperature of these objects is found and collected, after a certain processing, a thermal image corresponding to the target radiation distribution can be obtained.
Infrared Waves and The Classification
Generally, the electromagnetic waves radiated by objects with a wavelength between 0.76 μm and 1000 μm are defined as infrared light waves.
Infrared light is divided into four bands according to wavelength as below shows:
1.Short Infrared Waves (0.75μm～3.0μm)
2.Middle Infrared Waves (3.0μm～6.0μm)
3.Long Infrared Waves(6.0μm～15μm)
4.Super Long Infrared Waves (15μm～1000μm)
Infrared Thermal Imaging Technology based on atmospheric window bands
Research has found that infrared radiation has a great relationship with the penetration and wavelength of the atmosphere. Only a few specific bands of infrared radiation can penetrate the atmosphere well. Researchers call these specific bands “atmospheric windows”. The main atmospheric windows include 2μm-2.6μm, 3μm-6μm and 8μm-14μm.
Infrared thermal imaging technology is to perform imaging in the band of the “atmospheric window” using infrared radiation. At present, more research in the field of infrared imaging is to use two bands of mid-wave infrared (3 μm to 5 μm) and long-wave infrared (8 μm to 14 μm) for detection and convert the radiation of these bands into images that can be observed by human eyes and can be measured and analyzed.
LOYALTY-SECU Thermal Cameras Adopt The Long Infrared Waves (8μm～14μm)
Temperature Measurement Theory for LOYALTY-SECU Thermal Cameras
1.The thermal imaging camera infrared detector and optical system to perform infrared scanning of target objects
2.Gathering the infrared radiation information on the camera detector, convert it into an electrical signal, and perform a series of amplification processing.
3.After output the infrared radiation information to the display, the temperature distribution of the target object can be displayed. The thermal imaging camera with temperature measurement function not only has the function of temperature measurement, but also has the function of drawing the temperature distribution of the measured object and can convert the grayscale image into a false color image.
The infrared thermal imaging camera can accurately measure the temperature of the target object without touching the measurement object and display its temperature distribution on the display. Infrared thermal imaging cameras can accurately analyze the measured temperature and detect and analyze equipment which with abnormal heating.
Shenzhen LOYALTY-SECU Technology Co., LTD
