Formation of multiple aerial LED signs in multiple lanes formed with AIRR by use of two beam splitters

Abstract We propose multiple aerial imaging system by use of two beam splitters in the optical retro-reflection (AIRR). The AIRR consists a light source, splitter, and retro-reflector. Use two-layered enables us to show signs drivers driving lanes. purpose this paper is confirm feasibility that an display for novel traffic information provision. First, we explain configuration images road lanes, lane overtaking with splitters. Next, have developed prototype large high-brightness LED sign designed be used actual displays. source was height 450 mm width 390 mm, which shows character. observed naked eyes as experiments. And discuss issues practical application experiments revealed.