通用照明白光LED器件光谱节律刺激效应分析

Study on The Circadian Stimulus of White LED Device Spectrum for General Lighting

本研究基于通用照明领域常用LED器件光谱数据,通过节律刺激值计算方法,详细计算并分析了节律刺激值与色温、显指和照度的关系。研究发现:1)随着光源颜色色温升高,节律刺激值随之升高,但4000 K色温除外;2)不同色温光源,随着显指升高,节律刺激值随之变化趋势不同;3)随着照度升高,节律刺激值随之增大,变化趋势逐渐变缓;随着照度升高至10000 lx以上,节律刺激值接近0.7的饱和状态;以上结果对于LED照明灯具设计和器件选型具有较强的指导意义。

In this study,based on the spectral data of LED devices commonly used in the general lighting,the relationship between the circadian stimulus(CS)and color temperature,color rendering index,and illuminance was calculated and analyzed in detail through the calculation method of CS.The study found that:1)as the color temperature of the light source increased,the CS increased,except for the 4000 K color temperature;2)with different color temperature light sources,as the color rendering index increased the CS changed with different trerd;3)the CS increases as the illuminance increases.As the illuminance rises to more than 10000 lx,the CS approaches the saturation state of 0.7.The above results are very useful for LED lighting design and the selection of devices.