Essilor International

Essilor International (compagnie Generale D'optique)

Centre National De La Recherche Scientifique

Céline Benoit

Damien Paille

Claire-Eline Bres

Jean-Paul Cano

Pascal Allione

Laurent Calixte

Christian Bovet

Jérôme Moine

Jean Sahler

Carlos Rego

Sylvain Chene

Bruno Decreton

Guillaume Broutin

Olivier Roussel

Jérôme Ballet

Pierre Chavel

François Goudail

Marie Jarrousse

Eva Lazuka-Nicoulaud

A method is implemented by a computer for modifying a non-dioptric parameter of an optical system including a first and a second surface. The method includes a modifying step during which the first surface and second surface are modified so as to obtain a modified optical system such that the dioptric function of the modified optical system is substantially the same as the dioptric function of the optical system.

Method for modifying a non-dioptric parameter of an optical system

The invention relates to a method of selection of an ophthalmic lens suitable for correcting at least an optical impairment of an eye of a wearer who observes a screen. According to the invention the method comprises the steps of:

Ophthalmic lens and method for determining such an ophthalmic lens

A computer implemented method for determining an ophthalmic lens for providing to a wearer a comfortable vision when looking at electronic displays. The method includes: a wearer near vision electronic display use determining to determine at least an electronic display the wearer intends to use in a near vision situation; a wearer intermediate vision electronic display use determining to determine at least an electronic display the wearer intends to use in an intermediate vision situation; an usage priority rank determining to determine an usage priority rank between the near vision electronic display during the wearer near vision electronic display use determining and the intermediate vision electronic display during the wearer intermediate vision electronic display use determining; an ophthalmic lens determining to determine an ophthalmic lens from the at least one near vision electronic display or the at least one intermediate vision electronic display and the usage priority rank.

Ophthalmic lens and method for determining the same

Methods for determining a progressive ophthalmic lens are described, the lens comprising a near and a far vision area, a main meridian separating the lens into a nasal and a temporal area. The method includes determining a first and a second surface of the lens, determining the second surface to provide, in combination with the first surface, vision correcting properties, and determining a spherical area on the first surface of the lens having a constant sphere value and including a far vision diopter measurement position. The far vision diopter measurement position and a near vision diopter measurement position have substantially the same mean sphere value. The method also includes determining the first surface to reduce the lens distortion by defining a toric area extending outside the spherical area on the first surface in at least one of the nasal and the temporal area, in which characteristics of the toric area are related to the lens astigmatism.

Methods for determining a progressive ophthalmic lens

The invention relates to a transparent optical component having a cellular structure, comprising a network of walls (), that forms a set of cells () that are juxtaposed parallel to a component surface. In order to produce such a component, an irregular set of points () in the surface of the component is determined, each point being used to form a center of one of the cells. A position and an orientation of each wall are then determined such that the set of cells forms a Vorono&#xef; partition of the surface of the component. The component has a level of transparency that is compatible with an optical or ophthalmological use.

Production of a transparent optical component having a cellular structure

Growing community of inventors

Charenton-le-Pont, France

Céline Benoit