Distribuição luminosa espacial de luminárias LED

Abstract

Considering a growing need for data transmission and the consequent reduction of the radio frequency spectrum, the use of unguided visible light presents itself as a promising alternative due to, among other advantages, its healthy, free and immense spectral bandwidth available. These systems need an accurate model of the spatial distribution of light from the various LEDs that make up the system. Therefore, measuring, instrumenting and describing models of this nature requires equipment aimed at the succinct analysis of fundamental optical effects. In this sense, an attempt was made to develop a goniophotometer for the experimental identificatio of the luminous distribution of high power LEDs. Next, the estimator is applied to approximate the order parameters of the Lambertian distribution. Numerical results verify the proposed solution by accurately determining the values of these parameters both by simulation and by the prototype developed on the bench. The results were adapted from the Lambertian model and, with addition, polynomial adjustment was suggested, comparing the metric results with the data from the goniophotometer. Thus, it was valid to elucidate a comparison between the analytical model obtained and the curves flowing via instrumentation.