| http://www.w3.org/ns/prov#value | - Over the concave portions 34, a reflection film 35 made of a thin film of aluminum, silver or the like, for example, is formed by vapor deposition, printing or the like. [0087]FIG. 9A is a cross-sectional view of the concave portion 34, and FIG. 9B is a plan view thereof.
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