Analysis of normal and anomalous features of coefficients characterizing deviations from the inverse-square law in the application of LED modules
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- Guttsait, E.M. J. Commun. Technol. Electron. (2009) 54: 1417. doi:10.1134/S1064226909120122
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The curves of the coefficients that characterize deviations from the inverse-square law are classified as normal characteristics that are obtained in most cases and anomalous characteristics measured under specific conditions. The anomalous characteristics are classified as the curves of the first and second kind. The illuminance distributions are calculated for the areas located at various distances from the LED modules containing large numbers of LEDs that exhibit six types of the luminous-intensity curves. A notion of a relative uniformity of the illuminance distribution is introduced. A relation of the coefficients that characterize the deviations from the inverse-square law with respect to the distance and the uniformity of the illuminance distribution is analyzed for the LED modules with unrotated LEDs and the LEDs rotated in various directions.