Reflective principle of reflective signs on highways

When driving on the highway at night, the traffic signs on the road are very clear under the illumination of the car lights. Many places on the expressway are equipped with reflective signs. When the driver reaches a certain distance, the words on the signs can be clearly recognized. The expressway generally has a large traffic volume, and the speed is relatively fast, and the requirements for lighting are relatively high. But when you drive on the highway, you will find that except for service areas, gas stations and other sections, street lights are basically not installed in other places, but a new type of reflective tape is used.

Reflective tape materials are usually divided into two types. One is glass beads, which use optical glass with a high refractive index, are uniformly arranged and have a single-layer structure, and use the directional reflection function of the thin lens imaging principle to retroreflect the emitted light back to the light source. Reflective signs glow in the dark after being irradiated by lights, and do not need to consume energy, which is very energy-saving. The second type is micro-prism reflective tape, which is composed of many tiny reflective units arranged regularly. There are hundreds of reflective units per square centimeter, and each reflective unit is an independent reflective point. This kind of reflective material is used on road signs to play a directional retroreflective effect on car lights at night.

In addition to a large number of applications on highways, as a new type of optical material, reflective tape is also widely used in railways, airports, mining, advertising and other fields. Kunshan Yuhuan Package Material Co., Ltd. specializes in the production of reflective tapes. Hope to cooperate with you.

Contact: lulu Email:lulu@yhtape.com