Saint-gobain Glass France

Saint-gobain Performance Plastics Corporation

Centre National De La Recherche Scientifique

Cardinal Ig Company

Saint-gobain Sekurit France

Emmanuel Mimoun

Brice Dubost

Michele Schiavoni

Patrick Gayout

Simon Mazoyer

Nicolas Nadaud

Mathieu Berard

Guillaume Francois

Arnaud Huignard

Keihann Yavari

François Guillemot

Marie-Virginie Ehrensperger

Etienne Sandre-Chardonnal

Jean-Philippe Schweitzer

Cécile Ozanam

Louis Garnier

Matthieu Bilaine

Lucie Devys

Jean-Luc Allano

Daniele Costantini

Guillaume Counil

Fabrice Alain Pierre Gerbier

Jean Dalibard

Jean-Jacques Zondy

Delphine Descloux

Laurent Maillaud

Nicolas Desboeufs

C Cile Ozanam

A method for analyzing a glazing for a correction intended to be used by a LiDAR configured to emit, according to a given angle of emission, light waves intended to pass through a vehicle glazing, includes for a plurality of points of the glazing: obtaining a horizontal local slope and a vertical local slope at the point; calculating a vertical angular offset and a horizontal angular offset based on a vertical component and on a horizontal component of the angle of emission of the light wave passing through the glazing at the point, of the vertical local slope and of the horizontal local slope at the point and of the inclination of the glazing; and establishing an angular correction map from calculated vertical angular offsets and horizontal angular offsets.

Method for analyzing a glazing for a LiDAR

A laminated glazing of a vehicle includes a first extra clear glass sheet (exterior glazing), a lamination interlayer and a second glass sheet (interior glazing) with a through-hole in this second sheet including a mineral piece.

Laminated vehicle glazing, manufacture thereof and device with associated near-infrared vision system

An article used as black or dark-colored front-projection screen includes two distinct diffusely reflecting scattering elements, taking the form of parallel sheets or planes, qualified first and second scattering elements, wherein the first scattering element is translucent or transparent and the second scattering element is of dark color.

Dark-coloured or black projection screen

A radome may include a core and an outer dielectric constant (ODC) adaptation component overlying an outer surface of the core. The radome may have an effective dielectric constant variation profile from an outer surface of the ODC adaptation component, through the ODC adaptation component to an outer surface of the core. The effective dielectric constant variation profile of the ODC adaptation component may be a continuous monotonic function DC, where DCis the dielectric constant of the ODC adaptation component at the value ot, where ot is a ratio OT/OT, OTis a location within the ODC variation component measured from the outer surface of the ODC variation component, and OTis the total thickness of the ODC adaptation.

Continuous dielectric constant adaptation radome design

A glass sheet includes a symbol marked in the interior of the glass, the symbol forming a code. The symbol is marked in at least two dimensions including the dimension of the thickness of the glass sheet, portions of the symbol being marked at various depths in the thickness of the glass sheet.

Glass sheet with identification code

The subject of the invention is a process for obtaining a substrate provided on at least one portion of at least one of its sides with a coating, comprising a step of depositing said coating on said substrate, then a step of heat treatment of said coating using a pulsed or continuous laser radiation focused on said coating in the form of at least one laser line, the wavelength of which is within a range extending from 400 to 1500 nm, said heat treatment being such that a relative displacement movement is created between the substrate and the or each laser line, the speed of which is at least 3 meters per minute, the or each laser line having a beam quality factor (BPP) of at most 3 mm&#xb7;mrad and, measured at the place where the or each laser line is focused on said coating, a linear power density divided by the square root of the duty cycle of at least 200 W/cm, a length of at least 20 mm and a width distribution along the or each line such that the mean width is at least 30 micrometers and the difference between the largest width and the smallest width is at most 15% of the value of the mean width.

Method for producing a coated substrate

The invention relates to a glazing unit comprising a substrate coated with a variable light scattering system switching between a transparent state and a translucent state comprising a scattering layer able to scatter the incident light along scattering angles greater than the critical total internal reflection angle at the interface between the substrate and the air and at least one pair of elements absorbing visible light separated from one another at least by the scattering layer. The invention also relates to the use of said glazing unit as a projection or back-projection screen.

Glazing unit comprising a variable light scattering system and a pair of absorbing elements

In a process for obtaining a transparent substrate including a refractive index modulation pattern, a transparent substrate is irradiated with a laser radiation focused on the substrate in the form of at least one laser line, where the substrate at least partially absorbs the laser radiation, a relative movement is generated between the substrate and the laser line focused on the substrate, in a direction (X) transverse to the longitudinal direction (Y) of the laser line, and, in the course of this relative movement, the power of the laser line is temporally modulated as a function of the speed of the relative movement and as a function of the dimensions of the pattern in the direction (X) of the relative movement.

Process for obtaining a substrate

A process for obtaining a substrate provided with a coating, in which the coating includes a pattern with spatial modulation of at least one property of the coating, includes performing a heat treatment, using a laser radiation, of a continuous coating deposited on the substrate. The heat treatment is such that the substrate is irradiated with the laser radiation focused on the coating in the form of at least one laser line, keeping the coating continuous and without melting of the coating, and a relative displacement of the substrate and of the laser line focused on the coating is imposed in a direction transverse to the longitudinal direction of the laser line, while temporally modulating during this relative displacement the power of the laser line as a function of the speed of relative displacement and of the dimensions of the pattern in the direction of relative displacement.

Process for obtaining a substrate provided with a coating

A transparent sheet includes a texture in relief on a first of its main faces, such that, if n is the refractive index of the material including the texture, Pis the mean slope in degrees of the textured face and Y(q) is the percentage of the textured surface with a slope greater than q/(n&#x2212;1) in degrees, then the two cumulative conditions exist: Y(q)&#x3e;3%+f(q) %*P*(n&#x2212;1) and Y(q)&#x3e;10%, with f(q)=24&#x2212;(3*q) and q=2 or 3.

Textured glass for greenhouses

A method for reading symbols forming a code, the symbols each being marked on one face of a number of glass sheets in proximity to the same edge face of the glass sheets, the glass sheets being arranged in a stack. The method includes acquiring, with a camera, at least one image via the edge face of the glass sheets, the observation direction being non-perpendicular and inclined relative to the edge face of each of the glass sheets the code of which is read with the image; and an image processing step in which the acquired image is processed by a processor programmed to extract information present in at least one code visible in the image and having to be read.

Method for reading an identification code on a glass sheet

A process for the manufacture of a scattering polymer film can include (a) making available a film made of organic polymer, (b) applying, to one of the faces of the said film, a liquid composition (c) heating and/or irradiating the layer of liquid composition to form a cured scattering layer. A scattering polymer film can be obtained by this process. A substrate for OLED can include such a film adhesively bonded to a transparent substrate.

Scattering film for OLED

A laser apparatus includes a plurality of laser modules each generating a laser line in a working plane. The laser modules are juxtaposed so that the laser lines generated by the modules combine into a single laser line. Each of the laser modules includes at least one laser line generator and a laser line shaper. The laser line shaper includes an array of microlenses such that the final laser line generated by each laser module has, in the working plane, a power density profile with a width (L) at 90% of the maximum power density and a width (L) at 10% of the maximum power density. A ratio L/Lis between 1/15 and 1/5.

Modular laser apparatus

A laser apparatus includes a plurality of laser modules each generating a laser line in a working plane. The laser modules are juxtaposed so that the laser lines generated by the modules combine into a single laser line. Each of the laser modules includes at least one laser line generator. The laser line generator includes two linear arrays of strips of laser diodes each emitting a focused laser beam. The two linear arrays are arranged parallel to each other so that the strips are staggered. The two sets of parallel laser beams generated by the two linear arrays of strips, respectively, are merged into a single laser line by a set of mirrors. The linear arrays of strips of laser diodes and the mirrors are arranged so that the two sets of laser beams trace optical paths of the same length before being merged into a single laser line.

The invention relates to an optical wavelength conversion device adapted to receive at least one first pump beam (&#x3bb;) as an input and emitting a different wavelength output beam (&#x3bb;), which includes: an optical cavity (CE); an optically non-linear medium (CNL) placed inside the optical cavity; and a control system (BA) for controlling said optical cavity having the wavelength of the first pump beam; said control system being adapted to receive, as an input, a first signal (S) representing the power stored in the cavity having said first wavelength and a second signal (S) representing the power of the output beam. The invention also relates to a coherent light source comprising such a device and one or two pump laser sources (L, L).

Growing community of inventors

Boulogne-Billancourt, France

Emmanuel Mimoun