发光二极管光、色测试系统

Introduction to Optical and Color Measurement System for Light-emitting Diode

为适应特殊照明用白光发光二极管(white light-emitting diode以下缩写为WLED)研制开发的需要,设计加工了Φ100mm的积分球,通过光纤与现有的荧光分光光度计测量单元耦合,构成LED光、色测试系统。该系统首先给出LED的相对光谱功率分布,据此计算出LED的总光通量等光、色参数。这种方法避免了用一般光度计测总光通量时必须进行色修正的麻烦,也避免了因色修正不充分所带来的较大误差。

We designed and processed a Φ100mm measurement integral sphere, which connected with a fluorescence spectrophotometer by optical fiber, to meet the require of studies and application of white light-emitting diode for especial illumination. The system can measure the spectral power distribution of LED.On basis of the spectrum distribution, we can calculate the optical and colorimeter parameter of LED such as CIE color coordinate, color temperature, color rendering index and so on. This method can avoid color-correction which is necessary for general photometer and the large data error caused by color-correction.