What is the principle of car photo reflection? What material is it made of?
The reflective principle: 1. rare earth reflection: using visible light (electromagnetic wave length of 0.77-0.39 microns) activation of rare earth luminescent materials in Eu3+, Dy3+ and other elements, storage of light in the dark can emit yellow green light wavelength is 450~600nm. Based on the principle of luminescence, the rare earth luminescent material is applied to reflective material. 2. glass bead structure of reflective type: using high refractive index glass beads as the aluminum retroreflector, with retro reflective properties strong, most of the light can be directly reflected to the light source, resulting in the reflective brightness.
According to the practice of reflective material is divided into four grades: advertising level, engineering level, high strength and diamond; but according to the essence of classification is divided into: rare earth reflective glass beads, reflective type and reflective type micro prism structure.
Micro prism structure: the micro prism technique is different from the reflection principle of glass beads used in ordinary reflective films. Each micro prism cube is connected and arranged in order to form a precise reflection array. The reflective film made by using the technique has not only more than a few times increase in reflection efficiency, but also wide angle performance. It is also the only reflective material with long distance and wide angle.