Abstract: A flexible radiant energy reflecting surface, including a laminate composed of a metal ply, a glass ply having a front face and a rear face, the glass ply being bonded over its entire rear face to the metal ply, in an inter-ply bond, and a radiant-energy reflecting surface associated with one of the plies. The relative thicknesses of the glass and metal plies, the moduli of elasticity of the glass and metal plies, and the efficiency of the inter-ply bond are such that the rear face of the glass ply is not subjected to tensile stresses when the laminate is flexed, within the elastic limit of the metal, such that the front face of the glass ply has a concave curvature of a radius of 10 meters.