How is the reflection function implemented?

The surface of the reflective material is also covered with a layer of glass beads on top of the silver reflective paint. There are tens of thousands of glass beads per square centimeter of material surface. The characteristic of these tiny structures is that they can reflect the light that strikes the material back in the direction of the light source.

Therefore, the closer the observer is to the light source, the stronger the reflection will be. As the angular difference between the observer and the light source becomes larger, the intensity of the reflected light decreases rapidly. In this way, people near the light source, such as drivers driving at night, can see the bright reflection of their own car lights and spot people wearing reflective clothing in front of the vehicle; while drivers driving in other directions cannot see the reflection and will not be distracted.

By the way, studies have shown that reflective fabric tape on the legs (such as knees, ankles, etc.) are more likely to be seen by drivers than reflective strips on the torso. On the one hand, whether you are walking, running or riding, the reflective strips on your legs are constantly moving and are therefore more visible; on the other hand, in order to avoid shining into the eyes of oncoming drivers, the car headlights (low beam headlights) There are obvious light and dark cutoff lines, which mainly illuminate the area below the cutoff line and close to the ground. Therefore, the legs will be illuminated brighter by the car lights, and the reflection will be stronger.