| 摘要 |
The present invention aims to provide a retroreflective material that exhibits high reflective luminance for incident light with a large incident angle, and has excellent retroreflective performance for incident light with a wide incident angle. A retroreflective material includes a support, a fixing resin layer held on the support, transparent microspheres embedded in the fixing resin layer, and a reflective layer provided between the transparent microspheres and the fixing resin layer. In the retroreflective material, the transparent microspheres used have a refractive index of 1.6 to 2.5, and are exposed in air with an exposure ratio of 53 to 70%. The retroreflective material can thus have excellent retroreflective performance for incident light with a wide incident angle. |
