| 摘要 |
The present invention relates to a retroreflective material comprising a substrate layer having at least one parabolic retroreflector formed therein, the mathematical function describing the parabola being such that the angle of incidence and the angle of reflection of light from a light source are substantially equal for substantially all of the incident light. The invention further relates to a retroreflective system comprising the retroreflective material and a method of manufacture of a retroreflective material. |
