Essilor International (compagnie Generale D'optique)

Essilor International

Essilor International Cie Generale D'optique

Michel Nauche

Stephane Boutinon

Stéphane Boutinon

Vincent Tejedor Del Rio

Cedric Lemaire

Laurent Geysels

Konogan Baranton

Guilhem Escalier

Jean-Pierre Chauveau

Ludovic Jouard

Christian Joncour

Laurent Guillermin

Alain Chansavoir

Cédric Lemaire

David Tang

Bernard Brechemier

Didier Grand-Clement

Gaël Mazoyer

Laurent Cussac

Léonard Hartmann

Patrice Renan

Christophe Condat

Patrick Horel

Bruno Moinard

Pierre Rolland

Elisabeth Genevieve

Lionel Iribarne

Joel Batisse

Sebastien Evain

Jean-Michel Bargot

Salvatore Alaimo

Joël Batisse

David C Tang

Fouad Amghar

Sébastien Evain

Aude Tardy

An optical device including a lens and a control member configured such that motion of the control member produces a change in the optical power provided along an optical axis of the lens. The optical device further includes a framework, a motor and a driving member. The motor includes an output shaft rotatively coupled to said driving member. The motor and the control member are mounted in the framework such that the driving member and the control member mechanically cooperate. The driving member is rotatably mounted in the framework. The optical device comprises biasing means for maintaining the driving member in a predetermined axial position along the output shaft axis and relative to the framework. This optical device can be used in an optometric equipment.

Optical device and optometric equipment comprising such an optical device

An optometry device for testing an individual's eye (E) comprises an imaging module () adapted to produce a first image at a variable distance for the individual's eye (E), a beam splitter () arranged to combine the first image and a second image for the individual's eye (E), and a screen () facing the beam splitter (). A mirror () is arranged in combination with the screen () to produce the second image to be visible by the individual's eye via the beam splitter ().

Optometry device

An optometry device for testing an individual's eye includes: a casing; an imaging module located in the casing and adapted to produce a light beam directed to the individual's eye; and a refraction module adapted to provide a variable optical correction to the individual's eye looking there through into the casing. The optometry device includes an illumination system adapted to produce a variable ambient light level inside the casing.

Optometry device and method of performing a test using such an optometry device

Disclosed is a lens of variable optical power, characterized in that it includes: a transparent flexible lamella; a body having a ridge inscribed in a cylindrical surface; an element able to move a first portion of the lamella, which is distinct from a second portion of the lamella making contact with the ridge, so as to deform the lamella by flection; and a liquid contained between the lamella and the body. An optical assembly including such a lens and a vision-correcting device including such an optical assembly are also proposed.

Lens of variable optical power, optical assembly comprising such a lens and vision-correcting device comprising such an optical assembly

Disclosed is an optometry apparatus including: a base designed to receive corrective eyeglasses; at least one transmission element designed to cooperate with a member for regulating an optical correction characteristic of the eyeglasses; and at least one drive motor for driving the transmission element. Also disclosed is an assembly and to an associated system.

Optometry apparatus, assembly and system comprising such an apparatus

A refractor () includes: an enclosure having a front face containing a first optical window and a back face containing a second optical window aligned with the first optical window along an optical axis of observation; and at least one vision compensating device making it possible to observe along the optical axis of observation. The vision compensating device includes, between the first window and the second window, a first optical element having a spherical power along the optical axis, the spherical power being variable. The enclosure is mounted on an orientable holder () that is rotatable relative to a stationary portion () about a horizontal axis (H). A method for measuring refraction employing such a refractor is also disclosed.

Phoropter, and method for measuring refraction using a phoroptor of said type

Disclosed is a centering-blocking apparatus () including: a frame (); an ophthalmic lens holder (); a blocking unit () suitable for receiving a blocking accessory () with a view to depositing it on the ophthalmic lens; and a centering unit () suitable for revealing a reference system of the ophthalmic lens. According to an embodiment, the blocking unit is fixedly mounted on the frame whereas the holder is movably mounted on the frame.

Ophthalmic lens centring-blocking apparatus

The invention relates to vision compensating spectacles comprising means of support () on a wearer's face and at least one optical subassembly () mounted on the support means () opposite at least one of the wearer's eyes. The optical subassembly () comprises three optical elements mounted on the support means in series along an optical axis: a first optical element of cylindrical power for a direction of gaze of the wearer along the optical axis, a second optical element of cylindrical power for the said direction of gaze and a third optical element of variable spherical power for the said direction of gaze. The first optical element and the second optical element are adjustable in rotation about the optical axis independently of one another.

Corrective eyeglasses and method for subjective refraction by a wearer of said eyeglasses

A binocular optoelectronic apparatus for screening defects in the sight and for measuring the visual acuity of a user, includes a casing having a right-hand first aperture and a left-hand first aperture, which apertures are intended to be placed facing the right eye and the left eye of a user facing in a first gaze direction, respectively. This apparatus includes: a touchscreen placed so that a first zone of the touchscreen is located in the interior of the casing and a second zone of the touchscreen is accessible from the exterior of the casing; electronic elements suitable for displaying a plurality of optotypes on a first portion of the first zone; and an optical system configured to form a right-hand first image of the first portion of the first zone in the direction of the first right-hand aperture at a first vision distance along a first optical path.

Apparatus and method for screening for defects in the sight and for measuring the visual acuity of a user

A visual compensation system () enabling observation, with variable optical power correction, along an optical observation axis (X) includes:&#x2014;a first rotatable optical element () centered on the optical axis (X) and having a first cylinder power along the optical axis (X); &#x2014;a second rotatable optical element () centered on the optical axis (X) and having a second cylinder power along the optical axis (X); and&#x2014;a lens () having the optical axis (X) as the axis thereof, and moreover having variable sphere power.

Visual compensation system and optometric binocular device

A device () for cutting an ophthalmic lens (L) to be mounted onto a spectacle frame, includes: elements () for locking and rotating the ophthalmic lens about a locking axis (A); a tool holder which supports at least one first tool () rotatable about a rotational axis (A) and a second tool () rotatable about a finishing axis (A) and which has a spacing mobility (ESC) for the spacing apart thereof from the locking axis, a shifting mobility (TRA) for the axial positioning thereof along the locking axis, and a pivoting mobility (PIV) for adjusting the orientation of the rotational axis relative to the locking axis; and elements for controlling the three mobilities of the tool holder. The rotational and finishing axes are separate from one another.

Device for cutting an ophthalmic lens

A calibration template for calibrating a machining device that has blocking elements for blocking an ophthalmic lens, and machining elements for machining the ophthalmic lens, the template including a fastener portion suitable for being fastened to the blocking elements and a calibration portion arranged around the fastener portion. The calibration portion is made out of a material that is suitable for being machined by the machining elements, and presents firstly a plurality of shape patterns, and secondly a plurality of visual identifiers each visually associated with one of the shape patterns.

Template for calibrating a machine used to machine an ophthalmic lens, device and method using such a template

The machine includes: elements for supporting the lens and for driving it in rotation about a first axis of rotation, the rotation of the lens being driven by first driver element, a tool-carrier mounted to turn about a second axis of rotation, turning of the tool-carrier being driven by second driver element, a plurality of working tools mounted on the tool-carrier to rotate about tool axes, with at least two of the tools including tools for shaping the periphery of the lens for shaping having distinct tool axes, third driver element for driving relative spacing movements between the first axis of rotation and the second axis of rotation, swivel elements for enabling the tool-carrier to be pivoted relative to the first axis of rotation about a third axis of rotation that extends substantially transversely to the first axis of rotation.

Machine for shaping an eyeglass lens, the machine being provided with a turnable tool-carrier having a plurality of working tools mounted thereon

A method and device for edging an ophthalmic lens, includes turning the lens about a first axis of rotation and working on the edge face of the lens with a beveling grindwheel or cutter having a beveling groove or chamfer and mounted to rotate about a second axis of rotation. While machining the edge face of the lens with the beveling grindwheel or cutter, the first and second axis of rotation are moved dynamically relative to each other as a function of the angle of rotation of the lens about the first axis of rotation, in such a manner that during machining of each portion of the edge face of the lens, the tangent to the curve of the working portion of the beveling groove or chamfer is substantially parallel to the tangent to the curve of the bevel desired on the portion of the edge face.

Method and a device for edging an ophthalmic lens for machining the edge face of the lens to a desired curve

The present invention relates to a device and to a method for shaping an optical lens. According to the invention, a selection is provided between either a first tool () for machining the edge face of the lens, and a cutter tool () for cutting through the material of the lens, for the purpose of performing at least one given shaping operation. The invention also provides a method of shaping an optical lens coated in a treatment with low surface energy, the method including cutting through the material of the lens.

Growing community of inventors

Charenton-le-Pont, France

Michel Nauche