自吸收修正系数对LED灯具光通量的影响

Influence of Self Absorption Correction Coefficient on Luminous Flux of LED Lamps

为精确测量LED灯具的光通量,建立了积分球+高精度快速光谱辐射计测量光通量的模型,阐述积分球原理,自吸收修正系数的测量步骤和推导过程。选取一只标称功率为9W的普通照明用自镇流LED灯进行试验。试验结果表明,自吸收修正系数对LED灯具光通量测量结果影响较大,光通量与自吸收修正系数成正相关的关系。

In order to accurately measure the luminous flux of LED lamps, the model of integrating sphere + high-precision fast spectral radiometer is established. The principle of integrating sphere, the measurement steps and derivation process of self absorption correction coefficient are described. Select a self ballasting LED lamp with nominal power of 9W for general lighting for test. The test results show that the self absorption correction coefficient has a great influence on the measurement results of luminous flux of LED lamps, and the luminous flux is positively correlated with the self absorption correction coefficient.