Essilor International (compagnie Generale D'optique)

Essilor International

Cedric Begon

Pascal Allione

Loic Quere

Alexandre Gourraud

Peiqi Jiang

Ahmed Haddadi

Konogan Baranton

Gilles Le Saux

Steven Weber

Carlos Rego

Yves Leclaire

Cedric Lemaire

Christelle Marck

Yu Liu

Olivier Roussel

Alexandra Roos

Cédric Lemaire

Nicolas Lavillonniere

Melanie Tessieres

Aude Lapprand

Berangere Granger

Christelle Defranco

Agnes Ladous

Patrice Szymanski

Gerard Poirrier

Bruno Fauquier

Gilles Menges

Method implemented by computer for determining an optical equipment including at least an optical lens and a spectacle frame, the lens being adapted to be mounted in the frame, the method including:

Method for determining an optical equipment

A method for manufacturing an ophthalmic lens () having at least one optical function, includes the step of additively manufacturing () a complementary optical element () by depositing a plurality of predetermined volume elements () of a material having a predetermined refraction index on a predetermined manufacturing substrate (), the complementary optical element being configured such as to be assembled with an initial optical system (), the manufacturing step including the step of determining a manufacturing setting () from properties relating to the deformation of the complementary optical element, which deformation is caused by transferring the latter onto the initial optical system, and the step of determining a setting including the step of determining the deformation properties () of the complementary optical element from geometric properties of the manufacturing substrate and the initial optical system and from properties of the optical function to be provided to the ophthalmic lens.

Method for manufacturing an ophthalmic lens

A process for manufacturing an ophthalmic lens () having at least one optical function, includes: a step () of additively manufacturing the ophthalmic lens () by depositing a plurality of preset volume elements of at least one material having a preset refractive index in order to form a target geometric envelope; a step of determining an actual geometric envelope at least once during the implementation of the additive manufacturing step (); and a step of triggering a corrective action if there is in a zone a discrepancy larger than a preset threshold between the target geometric envelope and the actual geometric envelope.

Process and machine for manufacturing an ophthalmic lens

A process for manufacturing an ophthalmic lens having at least one optical function, includes the following steps: additively manufacturing () an intermediate optical element by depositing a plurality of preset volume elements of at least one material having a preset refractive index, the intermediate optical element including a target ophthalmic lens and a thickness allowance consisting of a portion of the plurality of volume elements; and subtractively manufacturing (), by machining, the target ophthalmic lens from the intermediate optical element, the machining being carried out in a preset sequence, of at least one step, the preset sequence making it possible to subtract the thickness allowance, the additive manufacturing step () including a step of determining a manufacturing setpoint for the intermediate optical element in which the thickness allowance is determined depending on the preset sequence defined in the subtractive manufacturing step ().

Process and system for manufacturing an ophthalmic lens

Method of shaping an ophthalmic eyeglass lens presenting two main optical working faces and including firstly a substrate made of a first material and presenting two main faces corresponding to the two main faces of the lens, and secondly at least one coating film made of a material distinct from that of the substrate, the coating film being previously secured on at least one of the main faces of the substrate, includes:

Method for trimming a pre-coated ophthalmic eyeglass lens

A method cuts a patch to be applied onto a curved substrate and includes the preliminary calculation of curvilinear lengths on the substrate between a reference point and a peripheral edge of said substrate. The calculated lengths are applied to a planar film for making the patch, and then the patch is cut by connecting the ends of the applied lengths. The patch then precisely coincides with the edge of the substrate. Such a method is particularly useful for applying a functional film onto a spectacle lens, as a trimming of the lens after the film is assembled with the lens would degrade said film.

Method for cutting a patch to be applied onto a curved substrate

An ophthalmic lens includes: a transparent ophthalmic lens substrate made of organic glass; an adhesive layer covering at least one of the faces of the transparent substrate; a transparent film made of a thermoplastic polymer fixed to the transparent substrate via the adhesive layer; and an abrasion-resistant coating covering the transparent thermoplastic polymer film, characterized in that the ophthalmic lens has a minimum thickness at the center of less than 2 mm, preferably less than 1.5 mm and even more preferably less than 1.2 mm. Two processes for manufacturing such a lens and the use of an adhesive multilayer film to improve the impact strength of such a lens are also described.

Impact-resistant ophthalmic lens and its manufacturing process

The present invention relates to a process for transferring at least one coating onto at least one geometrically defined surface of a lens substrate to produced a lens substrate coated with at least one functional coating adhering to at least one geometrically defined surface through a layer of transparent adhesive composition.

Process for transferring coatings onto a surface of a lens substrate with most precise optical quality

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Charenton-le-Pont, France

Cedric Begon