Essilor International

Essilor International (compagnie Generale D'optique)

Other

Cécile Pietri

Pauline Colas

Gilles Le Saux

Frédéric Dubois

David Freson

Stephane Boutinon

Helene De Rossi

Cyril Guilloux

Benjamin Rousseau

Pascal Allione

Cécile Petignaud

Jean Sahler

Christian Joncour

Vincent Anatole

Mathieu Guillot

Valérie Parmentier

Gilles Garcin

A method of ordering an ophthalmic lens comprises the following steps: &#x2014;obtaining data representative of a desired correction for a wearer's eye; &#x2014;determining (S, S), using an electronic device, a lens power to be measured on a lensmeter based on the obtained data and on at least one parameter defining an expected position of the lens with respect to the wearer's eye, wherein the lens power corresponds to the power measured on the lensmeter for a lens adapted to provide the desired correction to the wearer's eye when placed at the expected position with respect to the wearer's eye; &#x2014;ordering (S) the ophthalmic lens specifying the determined power. A corresponding system is also provided.

Method of ordering an ophthalmic lens and corresponding system

A method of determining a refractive power value characterising an ophthalmic lens for correction of an individual's eye ametropia includes: obtaining first data representative of a refraction value and second data representative of a position of the individual's head with respect to a refraction apparatus when the refraction value was determined; determining the refractive power value as a function of the first data and of a relative position, derived the second data, of the refraction apparatus with respect to a centre of rotation of the eye when the refraction value was determined. A corresponding electronic device is also proposed.

Method of determining a refractive power value characterising an ophthalmic lens and corresponding electronic device

A method for manufacturing an ophthalmic lens (), includes a marking step for producing permanent technical marks () on the lens, which includes a body (), a first surface () and a second surface () opposite the first surface (); the step of additive manufacturing (-) of the body and the first and second surfaces, by depositing a plurality of first predetermined volume elements of a first material having a first complex index of refraction (), in order to obtain first and second optical surfaces, respectively, of the first and second surfaces; and the step of additive manufacturing () of the marks by depositing, during the deposition of a plurality of the first volume elements of the first material, at least one second predetermined volume element of a second material having a second complex index of refraction () other than the first complex index of refraction of the first material.

Method for manufacturing an ophthalmic lens comprising a marking step for producing permanent technical marks on said ophthalmic lens

A method for calculating or optimizing an ophthalmic lens design comprising the steps of providing a given ophthalmic lens design and assessing the given design by a computer comprising a media suitable for storing electronic instructions.

Method for assessing an optical feature of an ophthalmic lens design

A method of selecting a semi-finished ophthalmic lens according to a given spectacle frame comprising the steps of: providing the spectacle frame front face base data providing a list of semi-finished ophthalmic lenses with a plurality of front face bases, and selecting from the list of semi-finished ophthalmic lenses the semi-finished ophthalmic lens whose front base is the closest from the front base of the spectacle frame.

Method of selecting a semi-finished ophthalmic lens according to a given spectacle frame

A method of calculating an optical system (OS) of an ophthalmic lens according to a given spectacle frame comprising the steps of: providing geometrical data of the spectacle frame, providing wearer data, and optimization of the optical system (OS) according to at least the criteria consisting of the geometrical data of the spectacle frame, the wearer data and at least one positioning data, so as to generate at least two optical surfaces (S, S).

Method of calculating an optical system according to a given spectacle frame

A method for selecting base-curves for an ophthalmic lens according to given prescription data comprising the steps of: providing a base-curve series consisting of a plurality of base-curves; calculating a target lens according to the prescription data; calculating the base-curves calculated lenses according to the prescription data; selecting, for at least an optical parameter and/or a geometrical parameter, a threshold value for the difference between the base-curves calculated lenses values and the target lens value of said parameter(s); determining the list of the base-curves of the base-curve series where said difference for said parameter(s) is less or equal to the selected threshold value(s).

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Charenton-le-Pont, France

Cécile Pietri