摘要
作为普通照明应用的光源，光效是其主要指标之一。与传统光源不同，LED光效及寿命等与结温密切相关，因此本文通过实验测试了LED器件在工作时温度及光度的变化，分析了现有评价LED光效的方法包括短时间脉冲电流法与在一定结温下测试光通量的方法用于评价照明用LED光效存在的问题，给出了标准散热器光效的评价方法，并通过实验证实这种评价方法对LED用于照明灯具具有实际的指导意义。
For general lighting application, the luminous efficacy of light source is one of its main performances. Comparing with traditional light source, the luminous efficacy and life of LED are directly bound up with the temperature of PN junction. Based on experiments, this article tested LED~ temperature and photometric changes when it is in working state; analysed existing assessment methods, including short-pulse current law and way to testing LED~ luminous flux when PN junction under certain temperature , to test luminous flux when LED lamp used as general lighting lamp; proposed standard radiator lighting efficiency evaluation method ; and confirmed that the evaluation method of the LED lamps for illumination has guiding significance.
出处
《照明工程学报》
北大核心
2010年第6期70-73,共4页
China Illuminating Engineering Journal
基金
陕西省教育厅专项研究计划（No.07JK188）.
关键词
电光源
照明电器
标准化
贸易技术壁垒
electric light source
lighting electrical appliance
standardization
technical barriers to trade （TBT）
