The aesthetics of lighting

Impact of Street Lighting Level on Floodlights

“…The first factor of major importance in the impact of street lighting on facades is the type of luminaires located in the vicinity of the architectural structures. There are generally two groups of luminaires with light distributions dedicated to lighting streets (street luminaires), squares, and open areas (decorative luminaires) [28][29][30]. Other factors include the location of the luminaires in relation to the facade of the building on an axis parallel to the facade, the distance of the luminaires from the facade, the height of the lighting poles, the wattage of the luminaires, the distances between the poles, and the reflectance of the light from the facade [31].…”

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.…”

The light color quality of LED operating at winter temperatures

“…Due to the European Union regulations it has become a necessity to save the electricity [8]. For this reason, in many applications, fluorescent lamps are replaced by LED sources, which luminous efficiency improves as the ambient temperature decreases [9].…”