Article incorporating a transparent hologramm

Claim 1

An article comprising: a substrate comprising a display portion(5) providing a first visible information pattern; and on the substrate, a reflection hologram (1) whose holographic image provides a second visible information pattern, and said hologram comprises a layer (2) having a holographic image forming surface relief (3) such that the second information pattern of the holographic image is visible to the naked eye when the hologram is illuminated within the angle range in which reproduction of the hologram is possible, and the layer (2) is at least partly coated with a reflection-enhancing layer (4), characterised in that the relief layer (2) is a transparent layer at least partly coated with the reflection-enhancing layer (4) which is a thin transparent layer of a resin or an inorganic compound and has a thickness capable of reproducing the surface relief of the transparent relief layer (2), the difference between the refractive index n₁ of the transparent relief layer (2) and the refractive index n₂ of the transparent reflection-enhancing layer (4) being not less than 0.1, and the transparent relief and reflection-enhancing layers (2,4) are disposed over the display portion (5) so that the first information pattern is visible to the naked eye through the hologram.