Essilor International (Compagnie Generale D'optique)

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Thales

Essilor International

Essilor International (Compagnie General D'optique)

Anthony Saugey

Jean-Paul Cano

Samuel Archambeau

Christian Bovet

Claudine Biver

Sandrine Duluard

Umberto Rossini

Jerome Ballet

Jérôme Ballet

Paul Lefillastre

Laurence Clerc

Jean Paul Cano

Jéróme Ballet

Laëtitia Pont

Feng Shi

An ophthalmic lens including an active matrix including pixels, addressing rows serving to control the pixels, data columns serving to supply electrical power to pixels, and at least one transistor for each pixel. In the matrix of the ophthalmic lens: each row or column undulates continuously but non-periodically on either side of a theoretical straight addressing or data line connecting the two end terminals of the row or column.

Ophthalmic lens integrating a disordered array, transparent active matrix

A transparent electrochromic system includes a cellular structure, two power supply electrodes together supported on a single wall, and at least one additional electrode. The additional electrode can be used as a reference electrode or as a polarization electrode. The additional electrode can also form a condenser with a fourth electrode that is added to the system, in order to control a migration of certain electroactive substances responsible for coloring and decoloring the system. The operation of the system can thus be improved.

Transparent electrochromic system

The invention relates to transparent electrochromic systems which each include one pair of supply electrodes and at least one pair of polarization electrodes. The polarization electrodes prevent a reaction of mutual neutralization of the electroactive substances of the systems from causing unnecessary consumption of electric current. Said electrodes also prevent a neutralization reaction from limiting a lower value of light transmission of the systems. For this purpose, the polarization electrodes produce an electric field inside the systems, which attracts the electroactive substances that have already reacted with the supply electrodes to different areas.

Transparent electrochromic systems with a plurality of polarisation electrodes

The invention relates to a photochromic optical article with reduced thermal dependency, comprising: (a) a transparent substrate, (b) a saturated photochromic layer having, in the activated state and at a temperature of 20&#xb0; C. or greater, a relative transmission factor of less than 1% in the visible range, and (c) an anti-UV coating of plastic material at least partially covering the saturated photochromic layer, the said anti-UV coating containing at least one agent which absorbs UV radiation (anti-UV agent) and is distributed in a pattern consisting of a multitude of points, each having a surface area of less than 0.15 mm 2, the average distance between two neighboring points lying between 0.5 and 2 mm and the ratio of the overall surface area of all the points to the total surface area of the anti-UV coating being such that the relative transmission factor of the optical article in the visible range in the activated state and at 20&#xb0; C. or greater is at least equal to 5%. The invention also relates to two methods for manufacturing such an optical article.

Photochromic optical article comprising a saturated photochromic coating and a film absorbing UV radiation

The present invention relates to a method for making a device provided with at least one closed enclosure filled with at least one liquid and closed with at least one flexible membrane based on an elastic material, comprising the steps of:

Method for making enclosures filled with liquid and closed by a membrane

A photochromic structure includes a plastic support of optical grade with good light transparency, having at least one face with an adhesive layer impregnated with a solution of a solvent with photochromes, having a flexible host matrix for the photochromes, which is mounted by adhesion onto another support. A structure with a uniform flexible photochromic matrix, which has rapid transition times, notably a rapid relaxation time, is thus obtained. The structure is mountable, and advantageously repositionable. It is produced via a process using roll-milling combined with a system for dispensing the solvated solution of photochromes upstream of the rolls, via which a support strip of an adhesive is entrained by the rolls, and the adhesive is gradually impregnated and then laminated on another support.

Multilayer structure having a photochromic host matrix and manufacturing method

An optical element comprises a base component () provided with a set of cells () open on a face of the component and a film () for sealing the cells. The film is adhesively bonded to ends () of separation walls () present between the cells. The adhesive bonding is carried out by applying a pressure adjusted so that the ends of the walls penetrate into a layer of adhesive material () positioned between the film and the set of cells. A refractive index value of the adhesive material is adjusted with respect to a value of the same index for the material of the ends of the walls m order to obtain an optical element which exhibits a high transparency.

Optical element comprising cells sealed by means of a layer of adhesive material

The invention concerns a method for producing a transparent optical element () including filling cells () of the element with a substance having an optical property. It consists in moving an amount of the substance () radially on the cells, towards a peripheral edge of the optical element, such that the substance penetrates each cell. Optionally, the cells may be sealed with a film () fixed on the partition walls () of the cells. The filling and the sealing of the cells may be carried out in a single step of the process.

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Charenton-le-Pont, France

Anthony Saugey