Lighting device and associated method

摘要

A lighting device (10) comprises a housing (12) carrying a linear array of light radiation sources (146) and one or more elongated diffusive screens (16) arranged facing the array (14) of light sources (146) so as to be passed through by the light radiation. The screen or screens (16) have a pattern of geometric features for producing a radiation pattern of the light radiation emitted by the lighting device (10) as a result of passing through the diffusive screen or screens (16). By replacing the diffusive screen or screens (16) with screens (16) which have a different pattern of geometric features (160, 162) it is possible to vary the radiation pattern of the light radiation emitted by the lighting device (10).