COMPARATIVE ANALYSIS OF SPECTRAL AND ILLUMINANCE OF INCANDESCENT LAMPS AND WHITE LIGHT EMITTING DIODES IN SAUDI ARABIA MARKET

Manal A. Haridy, Hissah S. Al-Baqawy, Maryam S. Alshammary, Mona A. Alshammary

Abstract: The present comparative study aimed to investigate some lighting characteristics of the most useable commercial lamps in the Saudi Arabia markets; New Power white light emitting diode lamps (WLEDs) and compare it Osram incandescent lamps. The lighting characteristics such as spectral power distributions (SPDs), illumination levels, ratio of illuminance to electrical power and Spectral mismatch correction factor (SCF) to human response eye curve V(?) have important roles on visual health effects of lighting for the two groups of the lamps. The first measurements set up based on NIS Spectroradiometer and photometric bench to measure for measuring spectral power distribution (SPDs) for the two groups of lamps. The second measurements set up based on Luxmeter and photometric bench for measuring illuminance for the two groups of lamps. Calculations of comparative analysis have been done for spectral power distributions (SPDs), illumination levels, ratio of illuminance to electrical power and Spectral mismatch correction factor (SCF) to human response curve V (?). The SPDs diagrams for the WLEDs showed typical light emitting diode response, with a few narrow spectral peaks. Moreover, the incandescent lamps showed high power in the longer wavelengths of the visible spectrum. The histogram for comparison of Spectral Mismatch Factor shows that for the two groups of the group of WLEDs lamps is higher than the group of incandescent lamps. According to that, the group of incandescent lamps is better matching than the group of WLEDs lamps. The illuminance values show that the group of incandescent lamps is higher in illuminance level than the group of WLEDs lamps. But the illuminance per electrical wattages for the two groups of lamps is higher in the group of WLEDs lamps than the group of incandescent lamps. This is means that the group of WLEDs lamps is more savers in energy than the group of incandescent lamps. We recommended using WLEDs lamps for economically and energy saves. On the other hand, we recommended using incandescent lamps for perfectly spectral matching with human response eye curve V (?). Data analysis was performed and uncertainty model includes all parameters accompanied with the measurements are calculated.

Keywords: Uncertainty, Illuminance, Spectral Power Distribution(SPD)Spectral mismatch correction factor(SCF), White light emitting diode lamps (WLEDs), Incandescent Lamps.A

DOI: https://doi.org/10.15623/ijret.2017.0606004