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Determination of surface forms and optical efficiencies of ellipsoidal reflectors using power LED lighting sources



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


New methods are used every day in lighting with rapidly developing technology. The most popular of these is LED lighting. LEDs are more efficient than traditional lighting sources in terms of energy saving, light quality, and lifetime. Optical design is one of the most important and critical processes in luminaire designs using LED lighting sources. Therefore, efficient luminaire designs are required in order to direct light and use it more efficiently. Reflectors are used to diffuse light in the right amount, to the right direction. Obtaining light intensity, luminaire efficiency, and luminance distribution in designing process is important for successful reflector designs. The present study investigated luminance distribution, optical efficiencies of ellipsoidal reflectors using LED lighting sources and conducted optimization of these. In this framework, different reflector surface coating materials were used in ellipsoidal reflectors and luminance distribution profiles were obtained. Additionally, optical efficiency was defined for luminaires formed with these reflectors. The data based on the reflector manufacturing were obtained in accordance with the ellipsoidal reflector analyses. With this method, technical data packages for the prototype production of reflectors using LED lighting sources are created..


LED lighting source, Reflector design, Ellipsoidal reflector surfaces, Optical efficiency, Illumination distribution.

Submitted at: Sept. 28, 2015
Accepted at: Oct. 28, 2015


O. FARUK FARSAKOGLU, T. BEGGI, Determination of surface forms and optical efficiencies of ellipsoidal reflectors using power LED lighting sources, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 11-12, pp. 1668-1674 (2015)