In this study, a new method of measuring LED junction temperature is given. The linear relative radiant power/temperature variation has been utilized in this method. This method can be applied at pulsed high currents of LED. The measurement system used here consists of a pulse oscillator, an appropriate LED driving circuit and a photodetector circuit. A photodetector voltage, which is proportional to the radiant power of LED, has been measured by using an oscilloscope, and junction temperature have been determined by making easy calculations on it. A constant, which is obtained from linear relative radiant power/junction temperature characteristics, has been used in this calculation.

在这项研究中，给出了一种测量LED结温的新方法。该方法利用了线性相对辐射功率/温度变化。此方法可应用于LED的脉冲大电流。这里使用的测量系统由脉冲振荡器，适当的LED驱动电路和光电检测器电路组成。已通过使用示波器测量了与LED的辐射功率成比例的光电检测器电压，并通过对其进行简单的计算来确定结温。从线性相对辐射功率/结温度特性获得的常数已用于此计算中。