LED-based planar light-source

摘要

The device works on the color mixing principle, so that the radiation of flat ultraviolet-emitting diodes (5) is converted into longer wavelength light by at least one ultraviolet absorbing fluorescent material (7) and mixed with a blue component. The radiation from the ultraviolet diodes is absorbed by the fluorescent material(s), while the blue component is provided by at least one blue emitting LED (8).