Essilor International

Essilor International (compagnie Generale D'optique)

Jean-Marc Padiou

Alexandre Gourraud

Loïc Quere

Mathieu Feuillade

Olivier Roussel

Eric Gacoin

Cyril Guilloux

Peiqi Jiang

Claudine Biver

Mathieu Meynen

Robert Alan Valeri

Jérôme Moine

Loic Quere

James Daniel Riall

Laurent Marcepoil

Jeanne Marchal

Patrick Herbin

Noémie Lesartre

Maxime Lecompere

Jean Stephane

Pierre Leite

Jonathan Saulny

Manuel Theodet

Marc Silva

Christophe Jeannin

Enrique Nava Rudiger

Jo&euml;l Bernard

Joel Bernard

Luis Ricardo Castro-Martinez

Jérome Moine

Laurent Huprel

Camille Meridiano

This system for selecting at least one ophthalmic lens manufacturing process to be used for manufacturing an ophthalmic lens, the manufacturing including additive manufacturing, includes at least one processor configured to determine in an automated manner, on the basis of a set of input data, at least two ophthalmic lens manufacturing processes differing by at least one manufacturing operation, which can be used for manufacturing the ophthalmic lens. It further includes at least one processor configured to select at least one ophthalmic lens manufacturing process to be used for manufacturing the ophthalmic lens, among the determined at least two ophthalmic lens manufacturing processes.

System and method for selecting an ophthalmic lens manufacturing process

A method of manufacturing an optical component having at least one optical function, comprising: —manufacturing using an additive manufacturing process at least part of an optical element () by depositing a plurality of predetermined volume elements () of polymerizable material, a part of the optical element () being configured to provide at least a part of the optical function of an optical component, said additively manufacturing being performed such that the optical element () comprises an unfinished peripheric surface (), said unfinished peripheric surface () having a relief pattern () formed by traces of the additive manufacturing process and having at least one depression () with regard to another part of the peripheric surface (), —coating said unfinished peripheric surface () with a layer () of coating liquid () configured to at least partially fill the at least one depression ().

Method for manufacturing an optical component with improved quality surface using additive manufacturing

A method of determining at least one parameter of an ophthalmic lens () including a complementary optical element () obtained by additive manufacturing and configured to provide at least a part of the optical function of the ophthalmic lens, the determining method including a step of providing two characterizing surfaces simulating two opposite surfaces of a complementary optical element (), the distance between the two characterizing surfaces along a thickness axis (Z) defining the thickness of the complementary optical element; a step of optimizing the distance between the two characterizing surfaces () along the thickness axis (Z) so that the thickness of the complementary optical element reaches a thickness threshold while complying with the optical function of the ophthalmic lens (); and a step of determining at least one parameter of the ophthalmic lens () on the basis of the optimized distance.

Determining method for an ophthalmic lens with optimized thickness

A method of manufacturing an ophthalmic lens having at least one optical function includes: a step of additively manufacturing a complementary optical element by depositing a plurality of predetermined volume elements on a predetermined build support, the complementary optical element being configured to provide at least a part of the optical function of the ophthalmic lens, wherein the build support includes at least one added value or adhesive configured to provide to the ophthalmic lens at least one added function. An ophthalmic lens including a build support and a complementary optical element as well as an ophthalmic lens obtained by such a manufacturing method.

Method of additively manufacturing an ophthalmic lens with at least one added function

A method of manufacturing an ophthalmic lens, including: a step of providing a starting optical system () having a first optical function and a first main refractive index; a step of providing a transition layer () intended to be disposed between the starting optical system () and a complementary optical element () having a second main refractive index, the transition layer () aiming at reducing unwanted reflection caused by the mismatch between the first and the second main refractive index, the transition layer () having a transition optical function; and a step of additively manufacturing the complementary optical element () on the transition layer (), the complementary optical element () having a second optical function, the second optical function being predetermined as a function of the first optical function and of the transition optical function.

Method for additively manufacturing an opthalmic lens and opthalmic lens

The invention provides a method for manufacturing an ophthalmic article having at least one optical function and at least one predetermined transmission parameter, comprising the steps () of surfacing at least a first face of a first body of said article, made from a first material, according to a first geometry determined for providing said predetermined transmission parameters; and surfacing () at least a second face of a second body of said article, made from a second material, according to a second geometry determined at least according to said first geometry, for providing said optical.

Method for manufacturing an ophthalmic article

Disclosed is a semi-finished lens that includes a blank formed in a first material having a first hardness, the blank having an outline, a first face and a second face configured to be surfaced so as to constitute a first optical face of the ophthalmic lens, and a top layer formed in a second material having a second hardness greater than the first hardness, the top layer having an outline, a first face and a second face, the second face of the top layer being arranged on the first face of the blank. The outline of the top layer is equal to or included in the outline of the blank, and satisfies to a predetermined dimensional selection criterion involving the final outline of the ophthalmic lens.

Semi-finished lens to be machined for forming an ophthalmic lens to be mounted in a spectacle frame, set and a method involving the same

A method of manufacturing an ophthalmic lens comprising: an ophthalmic lens data providing step (S) during which ophthalmic lens data corresponding are provided, a semi-finished lens blank providing step (S) during which a semi-finished lens blank is provided, a transfer function determining step (S) during which the transfer function to be applied to the first optical surface of the ophthalmic lens so as to correspond to the first lens blank surface is determined, an one side lens data calculating step (S) during which one side lens having second surface that corresponds to the second optical surface calculated by applying the transfer function, a machining step (S) during which the semi-finished lens blank is machined according to the one side lens data, a deforming step (S) during which the machined semi-finished lens blank is deformed so as to obtain the ophthalmic lens.

Method of manufacturing an ophthalmic lens

Disclosed is a method implemented by computer for determining a lens blank intended to be used for the manufacturing of a finished optical article. The method includes: &#x2014;a virtual volume data determining step, during which virtual volume data are determined based at least on finished optical article data representative of the volume of the finished optical article and over-thickness data representative of over-thickness requirements, the virtual volume data are determined so that the virtual volume defined by the virtual volume data includes the volume of the finished optical article volume of the finished optical article and the over-thickness, &#x2014;a lens blank determining step, during which a lens blank is determined based on the virtual volume data so as to include the virtual volume defined by the virtual volume data.

Method for determining a lens blank intended to be used to manufacture an optical lens

The present invention relates to a method for transforming an initial progressive ophthalmic surface which has to be manufactured by a manufacturing method, the transformation method comprising: a step of selecting a manufacturing method intended to be implemented, in which said manufacturing method introduces a reproducible surface defect, a step of selecting a predictive model of said reproducible surface defect,

Method for transforming a progressive ophthalmic surface

A polishing wheel () arranged to polish an article. The polishing wheel comprises a hub () provided with an axial cavity () coaxial with an axis (). The polishing wheel further comprises a substrate layer () being made of an elastomer material affixed to the hub () and coaxial with the axis (). The substrate layer () has an outer surface () having a substantially symmetrical shape with respect to the axis (). The polishing wheel () further comprises a continuous cover layer () affixed to the outer surface () and coaxial with the axis (). The continuous cover layer () is made of an elastomer material covering substantially entirely the outer surface ().

Polishing wheel

A method for producing an article which is made of a transparent material and devoid of visible surfacing lines, comprising:

Method for producing an article made of a transparent material devoid of visible surface lines and the thus obtained article

Tool for surfacing an optical surface

A process is disclosed of fabricating a surface of an ophthalmic lens. The process includes a step a) of machining the surface by removing material by moving a cutting tool along a continuous trajectory to form grooves, two adjacent grooves being spaced by a constant pitch from 0.01 mm to 3 mm, and a step b) of smoothing the machined surface by moving a smoothing tool along a continuous trajectory formed of passes, two adjacent passes being spaced by a constant pitch from 0.2 mm to 3 mm, to effect band-pass filtering of the undulations of the surface between a low frequency corresponding to a surface envelope and a high frequency corresponding to a background roughness.

Process for fabricating a surface of an ophthalmic lens, installation for implementing the process and ophthalmic lens obtained by the process

A tool for smoothing optical surfaces including a rigid support and a generally annular working member which is at least in part axially deformable. The support forms a recessed annular housing and the working member is attached to the support via the bottom of the annular housing but projects beyond the support. Applications include smoothing ophthalmic lenses, whether made from a mineral material or an organic material.

Growing community of inventors

Charenton-le-Pont, France

Jean-Marc Padiou