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Patents Year : 2011

Device and method to optically authenticate an object

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Abstract

The device has a set of nanometric pads distributed at a surface of a support e.g. object, for forming a homogeneous planar array, where each pad is a non-linear optical diffraction and diffusion pad. Each pad extends remote from the support along an axis. The pads, which are non centro-symmetric, are distributed on the support along different orientations for creating a constructive interference between non-linear optical responses of the pads. Each pad includes multiple parts, where one of the parts includes gold or silver. An independent claim is also included for a method for optical authentication of an object.
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Dates and versions

hal-02514904 , version 1 (23-03-2020)

Identifiers

  • HAL Id : hal-02514904 , version 1

Cite

Timothée Toury, Dominique Barchiesi, Hong Shen, Sophie Brasselet. Device and method to optically authenticate an object. France, Patent n° : EP2506225. 2011. ⟨hal-02514904⟩

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