The impact of ground reflectance on relative values of light pollution created by outdoor lamp

Abstract

The article contains the research results on light pollution relative values. The effect of used luminaire type was analyzed and the kind of ground on which the lamp was installed. Calculations were performed by using professional computer-aided lighting design software DIALux. A number of typical outdoor lighting fixtures were taken into account. These lamps were placed on a grass, soil, concrete, asphalt and snow ground. It was assumed that these luminaires emit the same value of luminous flux. It has been shown that the degree of light pollutions dependent not only on the intensity curve of given luminaire but also on the reflective properties of the ground under the lamp.