Institut Mines-telecom

Oberthur Fiduciaire Sas

Vincent Nourrit

Jean-Louis De Bougrenet De La Tocnaye

Fabrice Seguin

Cyril Lahuec

Francesco Ferranti

Jean-Louis De Bougrenet

Xavier Borde

Julien Gillot

Thierry Djenizian

Kevin Heggarty

Marie Dejean

Stéphanie Ferragut

A contact lens, intended to be worn on the eye of a person, for automatically aiming in the direction of the eye. The contact lens includes:—a membrane suitable for covering the pupil and the iris of the eye;—at least two light sources encapsulated in the membrane, each suitable for emitting a light beam whose divergence is controlled in relation to the axis of the lens;—at least one interface for collecting and supplying electrical energy to the light sources, from outside the lens;—at least one electronic circuit suitable for activating the sources from the interface.

Contact lens for automatically aiming in the direction of an eye of a person, associated detection system

The contact lens () for augmented reality comprises: a transparent body () designed to be placed on an eye (); and at least one augmented reality module comprising an optical source () attached to the transparent body () and designed to emit a light into the transparent body, and an optical element () attached to the transparent body () and designed to receive the light from the optical source () and send it in the direction of the eye (). The optical element () is a hologram designed to diffract the received light as a holographic image in the direction of the eye ().

Contact lens for augmented reality and method thereof

An optical system for detecting and tracking the eye movements of an individual. The system includes a frame, intended to be worn on the face of the individual, that includes a plurality of illumination sources. The system includes at least one contact lens, intended to be worn by an eye of the individual facing the frame, in which are encapsulated: an autonomous integrated circuit, a plurality of photoreceptors and a wireless communication transmitter. Variation in a signal (e.g., voltage or current) delivered by the photoreceptors allows not only the closure of the eyelid but also eye movements to be detected.

Optical system for detecting and tracking eye movements, associated external frame and associated connected contact lens

An assembly comprising a complex transparency device, i.e. a refractive and/or diffractive device acting on the light phase, and at least one array of micro-images, wherein: the complex transparency device comprises a periodical two-dimensional array formed from individual 'pupils,' wherein each pupil comprises a micro-optical device, at least some of the micro-optical devices having a non-centered optical axis, and at least some of the micro-optical devices positioned non-periodically with variable off-setting of the optical axis thereof with the array; the array of micro-images comprising as many micro-images as micro-optical devices; each micro-image has a contour identical to that of the associated pupil and a surface which is at the most identical to that of the associate pupil; and each micro-image is sub-divided into at least one thumbnail image such that when the transparency device is positioned facing the array of micro-images, and an observer observes the array through the transparency device, the observer sees, at least in a given direction of observation, an image which is reconstructed by the combination of the thumbnail images associated with the direction, wherein within the same subdivision, certain thumbnail images, form 'firsts group' and are distributed such that when the transparency device is positioned facing the array of micro-images, the thumb-nail images are respectively arranged according to the optical axis of the associated micro-optical device.

Assembly consisting of a complex transparency device and at least one array of micro-images, as well as a security document comprising same

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Brest, France

Vincent Nourrit