Measurement and Analysis of Photometric Characteristics and Efficacy of LED Luminaires for Indoor, Industrial and Street Lighting With and Without an Optical System

Measurement and analysis of photometric characteristics and efficacy of LED luminaires for indoor, industrial and street lighting with and without an optical system, are done in this paper. The results for the measured with a goniophotometer system, maximum luminous intensity, beam angle, field angle, total output luminous flux, luminaire efficacy, average luminance at vertical angular zones and light distribution for the different variants of the optical system of the tested LED luminaires are presented. The efficiency loss in the optical system elements of the tested LED luminaires is shown. Comparative lighting calculations of the tested indoor LED luminaire with and without reflector and grating anti-glare are done. Classification of the lateral and vertical light distribution according to the IES standard of the tested street LED luminaires with different variants of the optical system is done. Comparative optimal lighting calculations of both street LED luminaires without and with a secondary lens for road lighting designed according to the luminance requirement are done. Conclusions regarding the realized photometric indicators, glare, illuminance, and efficiency losses in optical system elements of the tested LED luminaires are done.