Infrared camera installation should avoid direct light source
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Infrared camera field of view should try to avoid all black objects, open space, water and other objects that absorb infrared light, CCD camera supporting the infrared light is reflected by the infrared light reflected on the object onto the CCD camera lens into an image, if the infrared light Absorption or weakening will greatly reduce the effective radiation effect of the infrared lamp.
Red storm problem
The light whose wavelength exceeds 700 nm is called infrared light. Infrared light with a wavelength above 900 nm is basically free of red storms. The shorter the wavelength is, the stronger the red storm is, but the higher the infrared sensitivity is.
Currently, there are two mainstream infrared lamps on the market. One is a light red storm with a wavelength of about 850 nm. The other is a red-storm free wavelength of about 940 nm. The same camera, the sensitivity of the 850nm wavelength, than the 940nm wavelength sensitivity to 10 times better. Therefore, the 850nm infrared lamp with a slight redstorm has a higher efficiency.