UV ACTIVATED ELECTRONIC WINDOW

摘要

An area light source (1) comprising a first light source (2) emitting light (L2) in a first wavelength range, and a light-transparent carrier screen (4) coated with a phosphorous layer (5) is disclosed. The area light source is characterised in that it comprises at least one additional light source (3) projecting light L3 in a second wavelength range, differing from said first wavelength range onto the carrier screen (4), said projected light L3 being capable of exciting the phosphorous layer (5).