摘要
在单颗LED中,以1℃/W^30.5℃/W范围的散热器热阻值和0.5W^6.5W范围的负载电功率作为优化变量,40lm^460lm范围的光通量和7 100K^8 600K范围的色温作为目标变量,通过光-电-热理论和多重光谱模型优化白光LED的光谱功率分布.计算获得白光LED的光通量和相关色温在系统中变化时所对应的光谱功率分布,目标值与理论值的误差在5%以内.该理论模型可为LED照明系统的设计提供参考.
Considering the direct current drive electrical power from 0.5 W to 6.5 W on a different heatsink and the thermal resistance from 1℃/W to 30.5℃/W as optimization variables,a series of calculations are performed in order to obtain the target variables which are the objective function of luminous flux from 40 lm to 460 lm and correlated color temperature from 7 100 Kto 8 600 K.The spectral power distribution of white light-emitting diodes was optimized using a combination of the photoelectro-thermal theory and multi-spectral power distribution modeling.When the objective function is close to 5%,the optimized results of SPD is obtained.The work provides a reference for practicing LED system designers to optimization an LED system.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2015年第10期52-58,共7页
Acta Photonica Sinica
基金
The National Natural Science Foundation of China(No.61307059)
the Science Project of Education Bureau of Fujian Province,China(Nos.JA13191,JK2014027)
the Regional Major Projects of Fujian Province(No.2014H4018)
the Science Project of Zhangzhou Association for Science and Technology(No.2015003)
关键词
LED
光谱分布
光通量
相关色温
散热器
Light-emitting diode
Spectral power distribution
Luminous flux
Correlated color temperature
Heatsink
