Essilor International (compagnie Generale D'optique)

Essilor International

Bernard Brechemier

Stéphane Boutinon

Konogan Baranton

Michel Nauche

Stephane Boutinon

David Tang

Léonard Hartmann

Mai-Lan Boytard

An optometry device for testing an individual's eye, includes a refraction test unit having an optical system for providing different vision correction powers close to the eye of the individual, and a display unit adapted to produce a visual test image for the individual's eye, the visual test image being visible through an exit aperture of the test unit of the optometry device. The display unit includes a screen adapted to display a test picture used in producing the visual test image and at least one optical element having an optical power. The optical element presents an active state in which it exhibits a non zero refraction power placed on an optical path of the light emitted by the screen and exiting the device through the exit aperture, and an inactive state in which it introduces no refractive power on the optical path.

Optometry device for testing an individual's eye and associated method

A system includes a positioning and centering pin () configured to be attached to an ophthalmic lens, an attachment member () configured to be positioned on and attached to the pin and to be attached to the lens, a tool () for positioning the attachment member on the pin, and which includes a body () provided with at least one receiving recess configured to at least partially receive at least one of the attachment members and the pin, at least one centering member () and at least one guide member (), which are configured such that, when the attachment member and the pin are mounted on the tool, the attachment member is centered relative to the body and the pin is guided relative to the body, whereby the attachment member is positioned in a predetermined position on the pin.

System comprising a positioning and centering pin for an ophthalmic lens, an attachment member and a tool for positioning said attachment member on said positioning and centering pin

An ophthalmic-lens holder () includes a plate () and three pads () which are mounted on the plate and rise up above the latter to offer free ends () via which they can bear the ophthalmic lens. At least one of the three pads is movably mounted on the plate.

Ophthalmic-lens holder

A blocking device () includes: a structure (); a manipulation arm () mounted on the structure to be movable between two extreme positions and including gripper element () for gripping a blocking accessory for placing on an ophthalmic lens; guide element () for guiding the manipulation arm between its two extreme positions along a path that presents a curved portion and an adjacent rectilinear portion; and drive element () for changing the position of the manipulation arm and including a gearwheel that meshes with a rack (). The rack forms part of the manipulation arm and presents a circularly arcuate portion () enabling the manipulation arm to be driven along the curved portion of its path, and a rectilinear portion () enabling the manipulation arm to be driven along the rectilinear portion of its path.

Device for blocking an ophthalmic lens

A preparation device () for preparing an ophthalmic lens to be machined, includes a support () suitable for holding the ophthalmic lens, blocking elements () including at least one blocking accessory () and a manipulator arm () for manipulating the blocking accessory, an acquisition device () suitable for acquiring an image of the ophthalmic lens, electronic and/or computer processor elements () suitable firstly for deducing an optical frame of reference of the ophthalmic lens, and secondly for controlling the position of the manipulator arm and/or of the support to apply the blocking accessory against the ophthalmic lens in a given blocking position. The blocking elements and/or the support include at least one marker element and the electronic and/or computer processor elements are adapted to identify the position of the marker element in an image acquired by the acquisition device, in which image there appears an image of the marker element.

Device and a method for preparing an ophthalmic lens for machining

A machine for trimming optical lenses includes two coaxial clamping jaws for clamping faces of a blank provided with bearing arrangements each of which cooperates with one face of the blank. At least one of the jaws includes a plate and a body. The plate carries one of the bearing members and is articulated to the body by a male member carried by one of the two parts constituting the plate/body combination and cooperating with a blind female housing in the other of the two parts. The male member has at least three facets evenly distributed about its axis and each facet is generally cylindrical with generatrices orthogonal to the axis and on respective opposite sides of a common transverse plane. The female housing has plane faces parallel to its axis and each of which is delimited axially by a bottom and cooperates with one of the facets of the male member.

Growing community of inventors

Charenton le Pont, France

Bernard Brechemier