摘要：

l. A decorative sheet material which exhibits interference color effects having individual given properties of color, depth, and visibility throughout a wide viewing angle comprising, in relative order of arrangement with respect to the inward passage of light rays incident upon said material, a layer embodying a plurality of lenticular elements for differentially refracting light rays passing therethrough, a light polarizing layer, a birefringent layer, and a light reflecting layer, said light polarizing layer having a given polarizing direction and said birefringent layer having a given thickness and a principal direction suitably oriented with respect to said polarizing direction to provide a given interference color of those light rays which have passed in order through said light polarizing and birefringent layers to said reflecting layer and return, said first-named lenticular layer variously altering the direction of the rays to thereby vary the retardation effect of the birefringent layer.

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