| 摘要 |
PURPOSE: A recursive reflex sheet is provided for getting wider scope of direction and higher recursive reflex coefficient in reflected light according to an incidence. CONSTITUTION: A recursive reflex sheet reflects light in the almost opposite to the specific direction of incident light. The recursive reflex sheet includes a flat part forming the same side of incident and output light on the recursive reflex sheet. The other side with shape reflects a light, wherein the side includes repeated units having two cube corners. The two cube corners are the same shape when turning completely, and make a scalene triangle formed by themselves and incident light. The recursive reflex sheet further comprises three different length's angles met within a cube corner at about right angle. As the recursive reflex sheet has wider scope of direction and higher recursive coefficient in reflected light according to incidence, it is possible to make use of wider angle.
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