| 摘要 |
To provide a retroreflective article formed of many triangular-pyramidal cube-corner retroreflective element pairs. One-side groove angle formed between a cross line between a plane vertical to the common plane and a V-groove vertical plane which includes the base line of a V-shaped groove and perpendicular to said the common plane, and a reflective lateral face, and the V-groove vertical plane does not form a constant angle in the reflective lateral face but the lateral face forms a curved and/or multiple surface. A base line constituting any directional V-shaped groove in retroreflective element pairs is a nonlinear base line which does not form a linear trajectory and the reflective lateral face formed of the V-shaped groove forms a curved and/or multiple surface. |
