Surys

Banque De France

Khalil Chikha

Valéry Petiton

Vincent Tollet

Françoise Daniel

Yoran Eli Pigeon

Francoise Daniel

Valery Petiton

Michel Barats

According to a first aspect, the invention relates to an optical security component intended to be observed in reflection, with the naked eye, according to face of observation. It comprises a first layer made of dielectric material, having a first refractive index (n), at least one first diffractive structure (S, S) etched on said first layer. The first diffractive structure comprises a first pattern with at least one set of modules disposed side-by-side, in a given direction (X) of arrangement, a maximum width (l) of each module defined in the direction of arrangement (X) being less than 300 &#x3bc;m. Each module comprises a bas-relief with a first set of facets whose forms are determined to simulate an optical element visible in reflection, with at least one convex or concave region, said optical element having a profile with a continuously variable slope in a single direction (Y), said direction of variation of the slope, at right angles to the direction of arrangement (X). For two modules side-by-side, the slope along at least one line parallel to the direction (X) of arrangement is different between said two modules.

Optical security component visible in reflection, manufacture of such a component, and secure document provided with such a component

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Bussy Saint Georges, France

Khalil Chikha