| 摘要 |
Disclosed therein is a beautiful and clear three-dimensional sheet, which includes a lens array formed on one side of a plastic sheet and having a plurality of hemispherical convex lenses arranged in columns and rows and embossed or engraved patterns formed on the other side of the plastic sheet by a plane total reflection angle, so that the uneven patterns appear to be enlarged and glitter like diamonds when they are viewed from the front of the convex lenses to thereby provide an effect that the patterns appear to hang in the air or to be sunken from the surface of the sheet. The three-dimensional sheet includes: a convex lens layer (10) molded of transparent synthetic resin or glass, the convex lens layer (10) having a plurality of hemispherical convex lenses (11) arranged in columns and rows on the upper face thereof; a transparent layer (20) located beneath the convex lens layer (10) for controlling a focal distance of the convex lenses (11); and an uneven pattern layer (30) located beneath the transparent layer (20) and having a pattern arrangement structure that embossed or engraved patterns are arranged at the same angle as convex lenses (11) of the convex lens layer (10), the uneven pattern layer (30) having uneven patterns (31) each having a section with an oblique angle larger than a plane total reflection angle (35) at the point of time that an observer observes the three-dimensional pattern, wherein the convex lens layer (10), the transparent layer (20) and the uneven pattern layer (30) are integrated into one sheet.
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