TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Method: In the method (M1) the composition for the second organic layer is laminated on the first organic layer. Preferred Components: The polyfunctional (meth)acrylate is contained as at least one of the polymerizable compound in the composition for the first organic layer, or the polymerizable compound in the composition for the second organic layer. The polyfunctional aromatic ring (meth)acrylate is contained as the (meth)acrylate having the aromatic group in the composition for the second organic layer. The (meth)acrylate having a bisphenol skeleton is contained as the (meth)acrylate having the aromatic group in the composition for the second organic layer. In the method (M1): the main ingredient contained in the composition for the first organic layer and the main ingredient contained in the composition for the second organic layer are the same; the acidic compound is an acidic (meth)acrylate, phosphoric acid acrylate, or their oligomers or polymers; at least one or each of the first inorganic layer and the second inorganic layer is an inorganic layer containing silicon oxide, silicon nitride, silicon oxynitride or silicon carbide; each of the composition for the first organic layer and the composition for the second organic layer comprises a solvent and photopolymerization initiator; and the composition for the second organic layer comprises a silane coupling agent, where a compound identical with the silane coupling agent (contained in the composition for the second organic layer) is contained as the silane coupling agent contained in the composition for the first organic layer, and the silane coupling agent contained in the composition for the first organic layer and the silane coupling agent contained in the composition for the second organic layer independently have a dimethoxymethylsilyl group or a trimethoxysilyl group respectively. In the organic/inorganic laminate: the first organic layer is adjacent with the second organic layer; at least one of the first organic layer and the second organic layer comprises a poly(meth)acrylate, where the second organic layer comprises poly(meth)acrylate having an aromatic group or a (meth)acrylate having a poly-bisphenol skeleton, and the first organic layer comprises a poly(meth)acrylate having an acidic group which is a phosphoric acid group; the silicon atom constituting the siloxane bond contained in the first organic layer is connected with at least one kind of organic groups, and an silicon atom constituting the siloxane bond contained in the second organic layer is connected to the same kind of the organic group as that of the organic group; and the total thickness of the organic layers contained between the first inorganic layer and the second inorganic layer is 0.1-50 mu m. EXAMPLE - No suitable example given.