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Since infrared rays can be monitored at night, more and more TV monitoring systems use infrared rays, and diode infrared lamps are the main materials for emitting infrared rays.
The infrared light emitting diode matrix constitutes an illuminant, and an infrared light emitting diode is used, and the working principle is simple and the operation is easy.
The working principle of the diode infrared lamp is: the infrared emission diode is made of a material with high infrared radiation efficiency (commonly used GaAs GaAs), and a forward bias is applied to the PN junction.
Inspire infrared light. The spectral power distribution is center wavelength 830 ~ 950nm, half-peak bandwidth about 40nm, it is a narrow band distribution, which is the range that can be felt by ordinary CCD black and white cameras. its
The biggest advantage is that it can be completely red-free (using 940-950nm wavelength infrared tube) or only weak red storm (red storm is visible red light) and long life.