Patent ID: 8511839

Claim:
A retroreflective article, comprising: a number of cube corner retroreflective elements formed in a closely packed manner on a common plane (plane Sc), each of the cube corner retroreflective elements having three reflective lateral surfaces (surface a, surface b and surface c) that have three edge lines (HD, HE and HF) and one apex (H) in common and an optical axis that passes through the apex (H) and is at equal distance from the three reflective lateral surfaces (surface a, surface b and surface c); and at least two types of cube corner retroreflective elements having optical axes tilted with respect to each other within a plane (plane Sv) that is perpendicular to a reflective lateral surface (surface c) of each cube corner reflective element and includes a common edge line (HF) of the other reflective lateral surfaces (surface a and surface b) and a perpendicular line from the apex (H) to the common plane (plane Sc).