Zamienniki LED klasycznych �ar�wek (2)

The Photometric Test Distance in Luminance Measurement of Light-Emitting Diodes in Road Lighting

“…However, very few papers focus on luminance distributions on the surface of light sources and luminaires [61][62][63][64][65], and yet, in the case of light sources, luminance measurements make it possible to determine the luminance distribution on the light-emitting surface. These are the basic tests necessary to design luminaires correctly.…”

“…The ILMD has the advantage of being able to work with multiple lenses (which requires a separate calibration process). This makes it possible, for example, to analyse the luminance distribution in large areas such as street lighting [74][75][76][77] and with different lens to analyse the luminance distribution on a very small LED area [7,62,78].…”

Color quality consideration when switching from FL to LED

“…The legal status in the European Union from 2023 prohibits the use of fluorescent lamps in new lighting installations, where the technology promoted due to energy efficiency involves LED sources [1][2][3][4]. New a n d modernized lighting installations should meet the specifications of national standards, where the colorimetric requirements are typically limited to Corelated Color Temperature [5] and General Color Rendering Index (Ra) [6], which is based on a comparison of the length of colour difference vectors in the CIE1 964 chromaticity diagram.…”