Photoluminescent films are made by calcining metal (zinc, chromium) sulfides or rare earth oxides with micro active agent. Colorless or pale white of photoluminescent vinyl, is in the ultraviolet light (200 ~ 400nm) irradiation, depending on the type of photoluminescent vinyl film and content of metal and activator in the pigment, and presents a variety of colors of visible light (400 ~ 800nm).
1 the principle
Principles of editing
Photoluminescent films reflect light back quickly from the surface. Different glow in the dark adhesive vinyl reflect light in different wavelength ranges. The color of reflected light depends on the wavelength of light absorbed by the film and the wavelength of light reflected, so there must be light on the surface of the film, the surface of the glow in the dark vinyl sheet can reflect light, such as various license plates, traffic signs and so on. Photoluminescent films emit light outward, not reflected light.
Photoluminescent film absorbs light of a certain wavelength and immediately emits light of different wavelengths outward, which is called fluorescence. When the incident light disappears, the Photoluminescent film will immediately stop emitting light. More specifically, fluorescence refers to some fairly bright colors of light that the human eye sees when glow in the dark vinyl film exposed to ambient light, such as green, orange, and yellow, also known as neon light.