| 摘要 |
The total thickness of a reflecting layer 12, colored layers 13 and a protecting layer 14 formed on a roughened surface area 11a of a reflecting substrate 10 is larger than a step difference Deltad between the roughened surface area 11a and a flat surface area 11b so that the surface of the roughened surface area 11a of the reflecting substrate 10 is lower than the surface of the flat surface area 11b.
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