摘要
利用积分球比较法测量灯具光通量时,常采用分光光谱法和光度法,这两种方法都需要引入修正系数以补偿灯具自吸收效应造成的光通量损失。研究了分光光谱法和光度法测量灯具光通量自吸收效应补偿的差异,从两种方法测量灯具光通量的基本原理出发,得到了光通量修正值的表达式。通过实验测量数据和理论分析,探讨了不同光谱分布的辅助灯对两种方法测量灯具光通量的影响。研究结果表明,分光光谱法测得的光通量修正值与辅助灯相对功率分布无关,光度法测得的光通量修正值与辅助灯相对功率分布有关,分光光谱法选择不同光谱的辅助灯测得的光通量修正值具有唯一性,而光度法选择不同光谱的辅助灯测得的光通量修正值不同。
Integrating spheres are often used to measure the total luminous flux of lamps by comparison methods, including power-spectral method and photometric method. Correction factors are introduced to compensate the loss of luminous flux due to self-absorption effect in the measurement process with the two methods. Difference in self- absorption effect compensation between the power-spectral method and the photometric method in luminous flux measurement is studied. According to the fundamental principle of luminous flux measurement, the expressions of modified luminous flux are obtained. Based on experimental data and theoretical analysis, influence of auxiliary lamps with different spectra on luminous flux results measured by the two methods is discussed. The results show that modified luminous flux is irrelevant to the relative power distribution of auxiliary lamps by the power-spectral method instead of that by the photometric method. Further results indicate that the modified luminous flux obtained by the power-spectral method remains same in spite of auxiliary lamps with different spectra, however, the modified value of luminous flux changes when the photometric method is used.
出处
《激光与光电子学进展》
CSCD
北大核心
2016年第10期126-132,共7页
Laser & Optoelectronics Progress
基金
安徽省高校自然科学研究重点项目(KJ2016A749)
皖西学院质量工程(2016wxxy05
2016wxxy44)
关键词
测量
光通量修正值
辅助灯
相对功率分布
自吸收效应
measurement
modified value of luminous flux
auxiliary lamp
relative power distribution
self-absorption effect
