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Recovery of LED diode optical spectrum

The importance and using of power LED diodes increases. White power LED diodes cover a wide spectral range and they are usable in many applications. These LED diodes work in optical systems, the original spectrum of a white power LED diode can be changed by using all kinds of optical elements. This article describes a pursuit of the most faithful recovery of the original spectrum of a white power LED diode. The evaluative criterion is the value of the Correlated Color Temperature of the original white power LED diode compared with the value of the Correlated Color Temperature of the recovered spectrum. This recovery can be used in communication engineering.