retroreflektivitetsnivå
Retroreflektivitetsnivå, often abbreviated as RL, is a measure of how effectively a surface reflects light back towards its source. This property is particularly important for materials designed to be seen in low-light conditions, such as road signs, traffic markers, and safety clothing. A high retroreflektivitetsnivå means that a significant portion of the incident light is reflected directly back to the observer, making the object appear brighter than if it were simply diffusely reflecting light in all directions.
The measurement of retroreflektivitetsnivå is typically expressed in candelas per lux per square meter (cd/lx/m²). This
Retroreflective materials achieve this effect through various mechanisms. Common methods include the use of small glass