Centre National De La Recherche Scientifique

H.e.f.

Université Jean Monnet Saint-étienne

Hologram Industries

Université Jean-monnet

Université Jean Monnet De Saint-etienne

Yves Jourlin

Laurent Dubost

Maxime Bichotte

Valéry Petiton

Alexandre Noizet

Jean Sauvage-Vincent

The invention relates to a system () for producing an optical mask () for surface microtexturing, said system () comprising: a substrate () having a surface () that is to be textured; a layer of material () which covers the surface () of the substrate () and has an outer surface () that is exposed to the outside environment; and a generating and depositing device for generating and depositing droplets () on the outer surface () of the layer of material (), in a specific arrangement () under condensation, forming the optical mask () on the outer surface () of the layer of material (). The invention also relates to a treatment plant comprising a system () of said type. The invention further relates to a method for producing a mask as well as to a surface microtexturing method.

System and method for producing an optical mask for surface microtexturing, and surface microtexturing plant and method

The invention relates to a system () for producing an optical mask () for surface treatment, in particular surface microtexturing, said system () comprising: a layer of material () which has an outer surface () that is exposed to the outside environment; and a generating and depositing device for generating and depositing droplets () on the outer surface () of the layer of material () in which a specific arrangement (), forming the optical mask () on the outer surface () of the layer of material (). The invention also relates to a treatment plant comprising a system () of said type. The invention further relates to a method for producing a mask as well as to a method for surface treatment.

System and method for producing an optical mask for surface treatment, and surface treatment plant and method

According to one aspect, the invention relates to an optical safety component having a plasmonic effect intended to be observed by transmission, including two layers () made of a transparent dielectric material, a metal layer () that is arranged between said layers made of dielectric material to form two dielectric-metal interfaces (), and is structured to form on at least a portion thereof corrugations () that are capable of coupling surface plasmon modes supported by said dielectric-metal interfaces with an incident light wave. The corrugations are arranged in a first coupling area in a first main direction and in at least one second coupling area separate from said first coupling area, in a second main direction that is substantially perpendicular to said first main direction, said metal layer being continuous on each one of said coupling areas.

Optical safety component having a transmissive effect, manufacture of such a component, and secure document provided with such a component

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Saint Etienne, France

Yves Jourlin