PRINTED IMAGE-SET RETRO-REFLECTION SHEET

摘要

A retro-reflection sheet comprising a retro-reflection sheet provided with at least a printed image, and an optical element array sheet regularly arranged on at least a specified location with many optical elements having a light transmitting feature, wherein, specifically, a printed image delivering a stereoscopic vision image is installed when the printed image is viewed through a lenticular lens sheet or a convex lens array sheet; and a reflection sheet using a stereoscopic vision image for forgery prevention.