Changes in the Spectral Power Distribution of Light Sources for Smart Lighting

Sunlight depending on the time of the day, is characterized by different spectral nature. The human body uses it to regulate its daily activity. To adjust the level of illumination and spectrum to the natural cycle of daily activity of the body we use lighting installations using smart light sources. The article presents the results of measurements of spectral characteristics, luminous flux and color temperature of incandescent, fluorescent and electroluminescence sources used in smart lighting installations.