LIGHTING DEVICE AND METHOD FOR UPGRADING A LIGHTING DEVICE

摘要

A lighting device comprising a first light source for emitting electromagnetic radiation having a first electromagnetic spectrum and a second light source for emitting electromagnetic radiation having a second electromagnetic spectrum, wherein the first and the second electromagnetic spectrum are different from each other, wherein an intensity maximum of the first electromagnetic spectrum lie within the range of the spectral sensitivity of the human eye, and wherein an intensity maximum of the second electromagnetic spectrum lies within the range of the spectral sensitivity of the visual organs of nocturnal insects.