Patent ID: 9170354
Filing Date: 2015-10-27
Classification: G02B

Abstract:
1. A retroreflective sheet, comprising: a base including a non-reflective region and a reflective region; a bonding layer formed over the base in the non-reflective region and the reflective region; a colored layer formed over the bonding layer in the non-reflective region and the reflective region, wherein the colored layer formed in the non-reflective region is thicker than the colored layer formed in the reflective region to have a concave-convex surface, wherein the colored layer has a fluorescent function or a phosphorescent function or having the both fluorescent and phosphorescent functions, wherein the concave is formed in the reflective region and the convex is formed in the non-reflective region; a reflective layer formed over the colored layer in the reflective region; and a light concentrating layer having a plurality of beads and formed over the reflective layer.