How Does Photoluminescent Technology Work?
Photoluminescence is a special kind of phosphorescence. The energy needed to activate it is supplied by common light sources such as daylight, tungsten filament, and fluorescent lights. Under sudden power loss situations, the material is conspicuous at some distance, providing an effective, bright contrast for text and graphical symbols and ensuring that safety messages are quickly recognized. This assists people to orientate themselves so that they can react effectively and evacuate efficiently. Photoluminescent materials contain purpose-designed inorganic phosphor compounds that are energized in seconds. This high-energy source in converted into a lower energy source of light. The lower energy light source is yellow-green, the color most readily perceived by the human eye and as specified by safety signs standards. Photoluminescent materials are non-radioactive, non-toxic and self-extinguishing.
