Commissariat a L'energie Atomique Et Aux Energies Alternatives

Idemia Identity & Security France

Commissariat a L'energie Atomique Et Aux Energies

Safran Identity & Security

Idemia Identity & Science France

Atmel Switzerland

Jean-François Mainguet

Joel Yann Fourre

Josep Segura Puchades

François Templier

Joël Yann Fourre

Gorka Arrizabalaga

Amelie Revaux

Mohammed Benwadih

Joël-Yann Fourre

Guy-Michel Parat

Jérôme Boutet

Miguel Aubouy

Margaux Vigier

Alain Chambron

Ghislain Despesse

Emmanuel Defay

Norbert Daniele

Sébastien Boisseau

Roland Pelisson

Christophe Serbutoviez

Pierre-Henri Thevenon

Florian Porte

Bruno Charrat

Joel-Yann Fourre

Alexandre Paleologue

Amélie Revaux

Nicolas Bouquet

An optoelectronic device including at least an emissive component including at least a first electrode, a second electrode, and an emissive element disposed between an emissive face of the optoelectronic device and the second electrode, a photodetector component such that the second electrode of the emissive component is disposed between the photodetector component and the emissive element. The emissive component and the photodetector component are superimposed one above the other, and the second electrode has at least one hole passing through it, disposed vertically in line with at least a part of a detection surface of the photodetector component and/or a part of the detection surface of the photodetector component is not disposed vertically in line with the second electrode and form a ring located at the external edges of the detection surface of the photodetector component.

Optoelectronic device with superimposed emissive and photodetector components

A display device including an array of display blocks, each display block including luminous elements and a driving circuit for the luminous elements; an array of control circuits associated with the display blocks; and a video card receiving an encrypted digital signal to be displayed and sending the encrypted digital data to be displayed to the control circuits Each control circuit includes: a first memory circuit receiving and storing the encrypted digital data; a second memory circuit storing a decryption key; and a decryption circuit decrypting the encrypted digital data using the decryption key.

Display device with local decryption of digital data

A virtual reality or augmented reality vision system including: a first emission module, emitting light in the visible range; a second emission module, emitting light in the infrared range; an infrared-sensitive photodetection module; and a micromirror array. Each micromirror is capable of assuming a first position and a second position. Each micromirror of the micromirror array is configured to, in its first position, receive light from the first emission module and reflect it along an axis of interest. Each micromirror of the micromirror array is configured to, in its second position, receive light from the second emission module and reflect it substantially along the axis of interest, and receive light propagating along the axis of interest and reflect it towards the photodetection module.

Virtual or augmented reality vision system with image sensor of the eye

Display device with local compression and decompression of displayed digital data

Method for capturing a thermal pattern by a sensor comprising a plurality of pixels each comprising a heat-sensitive measuring element, the method comprising, for each pixel:

Sensor and double integration method for capturing thermal patterns

The bottle has a neck sealed by a stopper. The safeguarding device () comprises a first and a second part (), the first part () being adapted to be integrated in the stopper () and the two parts () being joined in translation while allowing a limited relative movement of one part with respect to the other when a traction force is applied to the safeguarding device () in order to remove said stopper () from the neck. According to the invention, the safeguarding device comprises an electrical component () disposed so that at least one electrical characteristic of said component is modified during the relative movement of the two parts ().

Safeguarding device designed to secure a container

The invention relates to a pixel matrix of a thermal pattern sensor comprising several rows and several columns of pixels, said matrix comprising:

Pixel array of a thermal pattern sensor, sensor associates with coil heating lines

Method for manufacturing a device comprising a stack including a first layer comprising electrical conductors electrically insulated from each other, a second electrically conducting layer, a third layer of pyroelectric material, said third layer being arranged between the first layer and the second layer, said method comprising,

Method of manufacturing a device comprising a material acquiring an electrical property after have been subjected to an electric polarisation

A thermal pattern sensor including a plurality of pixels arranged on a substrate. Each pixel has a pyroelectric capacitance formed by at least one pyroelectric material portion arranged between a lower electrode and an upper electrode. The sensor has an abrasion-resistance coating, located on the side opposite the substrate and including pillars embedded in an abrasion-resistance layer, the pillars having a thermal conductivity strictly higher than that of the abrasion-resistance layer. A high thickness of the anti-abrasion protection coating can be achieved with a high rate of thermal transfer through the latter.

Pyroelectric sensor with improved abrasion-resistance coating

A papillary print sensor is provided, including a light emitting device configured to emit light radiation towards the sensor; and a matrix photodetector configured to be sensitive to at least part of an emission spectrum of the light emitting device, the light emitting device and the matrix photodetector being distributed together in and/or above a same semiconducting substrate, the light emitting device being composed of at least one gallium nitride light emitting diode (LED) with a series of through openings.

Print sensor with gallium nitride LED

The invention relates to a manufacturing process of a pixel array of a thermal pattern sensor comprising the steps of:

Manufacturing process of a pixel array of a thermal pattern sensor and associated sensor

Method for capturing a heat pattern with a sensor including a plurality of pixels each comprising a heat-sensitive measuring element, the sensor comprising an element for heating the measuring element, the method including carrying out the following steps for each pixel: a first heating step in which a first amount of heating power is dissipated in the measuring element; a first step of measuring the heat pattern, comprising a first read-out of the heat-sensitive measuring element, after a first delay time; a second heating step in which a second amount of heating power is dissipated in the measuring element; a second step of measuring the heat pattern, comprising a second read-out after a second delay time; and wherein the first amount of power is different from the second amount of power and/or the length of the first delay time is different from that of the second delay time.

Method for capturing a heat pattern

A system for vision in virtual reality or augmented reality is provided, in a support to be mounted on a head of a user, the system including a matrix of light-emission elements extending according to a display surface for display of images configured to be seen by the user; an optical projection system to form an image of the elements on a focusing surface at a distance from an eye of the user; a matrix of photo-detectors to acquire an image of a region of the eye extending according to a capture surface and arranged coplanar with the elements and at least partially overlapping with the capture surface and the display surface; and a computer to receive as an input the image acquired, and to process the same to deduce a parameter relative to the user, the optical projection system being a variable-focal-length optical system.

System for virtual reality or augmented reality having an eye sensor and method thereof

Thermal pattern sensor including a matrix of multiple rows and columns of pixels, each pixel comprising: - a pyroelectric capacitor comprising a pyroelectric portion positioned between lower and upper electrodes, in which a first of these electrodes forms a readout electrode; and &#x2014;a heating element that is capable of heating the pyroelectric portion of said pixel; and in which: - for each row of pixels, the heating elements are capable of heating the pyroelectric portion of the pixels of the row independently of the heating elements of the pixels of the other rows; and &#x2014;for each column of pixels, the readout electrodes of each pixel are electrically linked to one another and are formed by a first electrically conductive portion that makes contact with the pyroelectric portions of the pixels of the column, and that is separate from the first portions of the other columns.

Active thermal pattern sensor comprising a passive matrix of pixels

A method for determining if a papillary print is comprised of living human tissue or not, using a papillary print sensor comprising in superposition, a contact surface, an array optical sensor, and a plurality of illuminating devices parallel between them. The method comprises illumination of the papillary print by the illuminating devices forming together, on the contact surface, a light pattern which is uniform along an axis that extends from one side to the other of a detecting surface of the array optical sensor, and acquisition of an image by the array optical sensor, with these steps being implemented at least once; in each image, selection of the pixels corresponding to the valleys or ridges of the print; and using the pixels selected, extraction of an optical characteristic defining the response to illumination, of the material comprising the papillary print.

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Grenoble, France

Jean-François Mainguet