What is the infrared technology?

       In nature, object will produce infrared spectrum when over utterly temperature(- 273degree). Different object has different infrared wavelength, so the wavelength and temperature is relative. There are two important components in passive infrared detector. One is PIR, it can make infrared signal of 8—12um wavelength become electricity signal. The other component is Fenier lens. Fenier lens has two functions: one is focusing, can refract infrared signal to PIR, the other is that make detecting area to bright area and dark area, can transmit infrared signal according to temperature changing on PIR.


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