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Determination of illuminance distributions of aspherical reflecting surfaces using power LED sources

O. FARUK FARSAKOGLU1, I. ATIK1,*

Affiliation

  1. Kilis 7 Aralik University, Faculty of Engineering Architecture, Department of Electric Electronical Engineering, Kilis, 079000, TURKEY

Abstract

Power LED lighting technology has been improving quite fast. Therefore, conventional lighting components have been currently replaced with LED lighting technology due to its advantages. In the reflector design, to obtain and control the probable characteristics of reflector surfaces such as luminous intensity, luminance distribution, and luminaire efficiency are very important. In this case, reflecting surface forms were computed to get optimum luminous intensity distributions and luminaire efficiencies providing uniform luminosities. On that way, different power LEDs and Fresnel lenses were used for this purpose. In paraboloid reflectors, the effects of variations of reflector surfaces and materials on luminous distributions were determined. The effects of variation illumination distances between the location of luminaire and illumination planes on luminance distributions were computed using multiple LED sequences. Luminance and luminous intensity distributions of reflector surfaces were simulated using computer software programs. This study was also implemented to prepare prototypes of paraboloid reflectors for the manufacturing aims..

Keywords

Power LED, Reflecting surfaces,Paraboloid Surfaces, Reflecting materials, Fresnel lens.

Submitted at: March 16, 2015
Accepted at: March 19, 2015

Citation

O. FARUK FARSAKOGLU, I. ATIK, Determination of illuminance distributions of aspherical reflecting surfaces using power LED sources, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 3-4, pp. 277-284 (2015)