1 January 2007 Methods of estimating luminous flux of the backlight module by luminance measurement
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Optical Engineering, 46(1), 016402 (2007). doi:10.1117/1.2430501
Abstract
We present several different estimation methods to calculate the total luminous flux and luminous efficiency of a backlight module by using the measurement data from a luminance meter. We used the integrating sphere to measure a backlight module and found the luminous efficiency as 72.232%. With this result as a reference, we compared total luminous efficiencies obtained by five estimation methods, which are based on the luminance distributions along the x axis and y axis and measured by a luminance meter. In addition to these experimental results, we discussed the effect of dividing the luminous region into small areas on faster computations of total luminous flux of a backlight module.
Rong-Fong Fung, Liang-Kang Chang, Chi-Feng Lin, "Methods of estimating luminous flux of the backlight module by luminance measurement," Optical Engineering 46(1), 016402 (1 January 2007). http://dx.doi.org/10.1117/1.2430501
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KEYWORDS
Light emitting diodes

Luminous efficiency

Integrating spheres

Computing systems

Data modeling

Optical engineering

Error analysis

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