摘要
照明光源的灯光质量对人体健康的影响受到了越来越多的关注。近几年伴随着大功率发光二极管发光效率的不断突破,已经达到甚至超过普通照明光源的发光效率。为进一步改善照明光源质量,通过色温的变化实现类太阳光色温变化的智能光源,采用红绿蓝三基色发光二极管,基于理论计算按照不同比例的三基色搭配,在实验中测试得到一个不同色温配比的数据库。并将数据库植入控制程序中,然后通过控制程序自动调取不同配比,最终实现不同时间段色温动态变化的照明光源。实验结果表明,本照明光源可以实现从2300~7000 K的宽色温范围,实际色温与理论计算相符,基本实现了类太阳光动态色温变化趋势。
More and more attentions have been focused on the lighting source as it plays an important role to people′s health.The light emitting efficiency of light emitting diode has been broken through year by year and now it has been surpassed that of the traditional lighting source.In order to improve the lighting quality by a lighting source with flexible color temperature,a data base is created with different color temperature by mixing different proportion luminous flux of red,green and blue light emitting diode based on theoretical calculations.The data base is embedded into the control program and it can run different proportion to realize light source variation with color temperature at different time.The experimental results show that the lighting source can realize correlated color temperature from 2300~7000 K,real color temperature is in accordance with that of theoretical calculation.Thus a sunlight-style lighting device is realized fundamentally.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2011年第5期222-228,共7页
Acta Optica Sinica
基金
教育部新世纪优秀人才项目(NCET-07-0535)
上海市启明星跟踪计划项目(08QH14007)
上海市科委半导体照明专项计划(08DZ1140603
09DZ1141502
09DZ1140300)资助课题
关键词
光电子学
动态色温
三基色配光
照明光源
发光二极管
optoelectronics
dynamic color temperature
tricolor light mixing
lighting source
light emitting diode
