Designing LED array for uniform illumination based on local search algorithm

P. Lei; Q. Wang; H. Zou

doi:10.2971/jeos.2014.14014

Journal of the European Optical Society - Rapid publications, Vol 9 (2014)

Designing LED array for uniform illumination based on local search algorithm

P. Lei, Q. Wang, H. Zou

Abstract

We propose a numerical optimization method based on local search algorithm to design an LED array for a highly uniform illumination distribution. In the first place, an initial LED array is randomly generated and the corresponding value of the objective function is calculated. In the second place, the value of the objective function is iteratively improved by applying local changes of the LED array until the objective function value can not be improved. This method can automatically design an array of LEDs with different luminous intensity value and distribution. Computer simulations show that the near-optimal LED array with highly uniform illumination distribution on target plane is obtained by this method.

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