摘要
通过发光二极管(LED)在模拟调光和脉冲宽度调制(PWM)调光两种不同调光方式实验中,研究其光色参数的变化情况.分析同一色温白光LED在不同调光方式的色温和光通量的变化趋势,并分别分析同一种调光方式下,两种不同色温LED混和之后的色温和光通量的变化趋势.结果表明:同一色温白光LED在PWM调光方式下,色温的变化较小,但其光效较模拟调光小;两种不同色温LED混色之后的色温可在较大范围内变化,可满足人们对LED不同光色的选择.
According to the light emitting diode（LED）′s performances respectively in the simulation dimmer way and pulse width modulation（PWM） dimmer way,this paper studies the changes of the LED′s photochromic parameters,analysis the change tendency of the color temperature and luminous flux in the same white LED with above two different dimmer ways,and the change tendency of the color temperature and luminous flux for two different color temperature LED mixed in the same dimmer way.The result shows that for the simulation dimmer way,both the color temperature′s change and its efficiency is smaller at the same color temperature white LED in PWM dimmer way;and after two different color temperature LED mixed,the color temperature′s change range is bigger,which meets the LED′s different color temperature′s demand for the people.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2013年第1期14-17,共4页
Journal of Huaqiao University(Natural Science)
基金
福建省自然科学基金资助项目(2010J01338)
福建省科技计划重点项目(2009H0034)
福建省发改委发明创造扶持基金资助项目(FC200905)
关键词
发光二极管
脉冲宽度调制
调光
色温
亮度
light-emitting diode
pulse width modulation
dimming
color temperature
lightness
