Decorative body, decorative body lighting equipment, decorative body manufacturing apparatus and decorative body manufacturing method

摘要

PROBLEM TO BE SOLVED: To provide a decorative body and the like that exhibit various visual states by changing the viewing direction. In the decorative body 3 of FIG. 7c, the base material portion M is permeable and the plurality of groove portions G are arranged side by side. When the observer V sees the ornamental body 3 from the front, for example, a landscape in the back and the like can be seen through, and the groove G is barely visible. On the other hand, when the observer V0 views the ornamental body 3 from an oblique direction, for example, among the plurality of groove portions G, an upper portion of the groove side surface F11 behind the front groove portion G and a lower portion of the groove side surface F0 in front of the rear groove portion G0. If the two are seen in close contact with each other without any gap, the observer V0 can see the pattern of the groove G and the like, and the scenery in the back is hidden. For that purpose, the depth de of the groove portion G0 passes through the point Po1 on the end portion of the groove side surface F0 on the back surface portion S side and is perpendicular to the surface portion S, and the shortest distance di3 between cot [arcsin]. (1 / n)] times (n is the refractive index of the base material portion M). The above-described problem is solved by the decorative body 3 having the repeating pattern of the plurality of groove portions G having such a relationship. [Selection diagram] FIG.