Effect of a Flat Mirror Surface on the form of Photometric Body of Leds

Albert A. Ashryatov*, Dinara K. Churakova2

The present study discusses one of the possible ways to control the light distribution of a number of light sources (ICs), built on light-emitting diodes (LEDs) with different radiation angles. The use of a mirror surface as secondary optics, which redistributes the luminous flux of the SD IC is proposed. A program in Microsoft Excel has been developed to model the required light distribution of LEDs through varying the LED light intensity curve and orientation in space of a flat mirror surface relative to the optical center of the LED. It was experimentally shown that, depending on the initial type of luminous intensity curve of the LED and the features of mounting the mirror surface, the resulting light distribution can vary widely. The photometric results of a laboratory stand with mounted IP ICs and with a mirrored surface were exported into IES format and then imported into the DIALux software environment. The developed project of landscape lighting showed that compliance can be used with standards of lighting of areas adjacent to public buildings by using LED luminous intensity curve correction. Finally, a normalized average horizontal illumination with less energy is created.

Volume 11 | 02-Special Issue

Pages: 439-445