Abstract: A variable optical transmission device (2) comprising: —ariable transmission optics (4a, 4b) capable of varying an optical transmission between an initial transmission value (TV (ti)) and a target transmission value (TVtarget), and —a control unit (5) configured to control a transmission parameter of the variable transmission optics, wherein the control unit (5) is configured to control a response duration of the variable transmission optics as a function of the initial transmission value (TV (ti)) and the target transmission value (TVtarget).

Abstract: A device for evaluating the performance of visual equipment for a wearer. The device includes at least one input adapted to obtain virtual tests to be performed with the equipment, each test including at least one scenario combined with at least one virtual model of the wearer, defining how a visual task including a sequence of fixation points is to be carried out by the model in an environment defined by a description of shapes and positions of elements to be viewed by the model, at least one processor configured for selecting at least one test, based on at least one personalized real or simulated wearer activity profile representing usage of the equipment by the wearer, and evaluating the performance of the equipment with which the selected test is performed by the model by computing for one or more fixation points at least one performance criterion generated for the task.

Abstract: The invention relates to a method of manufacturing an optical lens (12) comprising at least one electronic component (14, 16), the method comprising: providing (S2) a mechanical reference system on an optical lens blank, the optical lens blank being configured to be processed to form the optical lens; providing (S4) edging data configured to be used to edge the optical lens blank to form the optical lens; embedding (S6) the at least one electronic component in the optical lens based on edging data and on the mechanical reference system.

Abstract: A device for evaluating visual equipment models corresponding to real visual equipments. The device includes at least one input adapted to obtain parameters including a prescription for a given human wearer of any one of the real visual equipments, a set of ophthalmic lenses pre-selected on the basis of those parameters, at least one processor configured, for each pre-selected ophthalmic lens, to obtain a visual equipment model including a virtual ophthalmic lens defined by the same characteristics as the pre-selected ophthalmic lens, obtain a wearer model from the parameters, the visual equipment model cooperating with the wearer model, obtain an environment and visual task model including a sequence of points to be looked at by the wearer model, and evaluate a performance of the visual equipment model worn by the wearer model and combined with the environment and visual task model.

Abstract: An optical device including an active programmable lens having an adjustable optical power depending on a prescription of a wearer and being relative to a vision distance and/or direction of an eye of the wearer, a vision sensor adapted to measure vision data relating to the vision distance and/or direction of the eye, and an optical power controller that includes a memory storing computer executable instructions and adapted to store measured vision data and two predetermined optical power states corresponding to an optical power relative to a range of vision distance and/or direction of the eye, and a processor for executing the stored computer executable instructions, which include instructions for adjusting the adjustable optical power between the predetermined optical power states with a resolution smaller than or equal to 0.25D when the vision data passes from one range of vision distance and/or direction to another.

Abstract: A process, phoropter, and an optometry system, the process being for correction of the shift of the optical power of an active lens in a phoropter due to a temperature change over time, the active lens including a container filled with a liquid and having a deformable curvature membrane under the action of an actuator controlled by an optical power control command, the shift being that the active lens provides an actual optical power that is different from the expected optical power corresponding to the optical power control command. A temperature sensor is arranged in and/or on the phoropter to measure the temperature in the phoropter.

Abstract: A machine for disassembling a lens mold assembly including a first mold part, a second mold part, and a molded-lens sandwiched therebetween. The machine includes a centering unit to center the lens mold assembly. The machine includes a disassembling module having a mold engagement mechanism to engage the first and second mold parts to clamp and move the lens mold assembly. The disassembling module includes a molded-lens holder mechanism having at least two clamping members to clamp the molded-lens of the lens mold assembly. The machine includes an alignment guidance module to detect relative positions between the molded lens of the lens mold assembly and the molded-lens holder mechanism to align the molded lens for clamping by the molded-lens holder mechanism. The mold engagement mechanism is configured to hold the first and second mold parts individually and to separate the first and second mold parts from the molded lens.

Abstract: A method of determining at least one parameter of an ophthalmic lens (40) including a complementary optical element (12) obtained by additive manufacturing and configured to provide at least a part of the optical function of the ophthalmic lens, the determining method including a step of providing two characterizing surfaces simulating two opposite surfaces of a complementary optical element (12), the distance between the two characterizing surfaces along a thickness axis (Z) defining the thickness of the complementary optical element; a step of optimizing the distance between the two characterizing surfaces (20) along the thickness axis (Z) so that the thickness of the complementary optical element reaches a thickness threshold while complying with the optical function of the ophthalmic lens (40); and a step of determining at least one parameter of the ophthalmic lens (40) on the basis of the optimized distance.

Abstract: A de-taping machine for removing a tape around a lens-mold-assembly. The machine including a lens-mold-assembly-rotation mechanism for holding and rotating the lens-mold-assembly and a tape gripping mechanism. The tape gripping mechanism including a first jaw having a clamping surface; a second jaw movable towards the first jaw for clamping a free end of the tape; a proximity sensing arrangement to generate a first detection signal when the free end of the tape is at a pre-determined distance from the first jaw; and a contact sensing arrangement to generate a second detection signal when the tape is in contact with the first jaw. A rotational speed of the lens-mold-assembly-rotation may be varied based on the first detection signal. Further, the lens-mold-assembly-rotation mechanism may be stop and the tape gripping mechanism may move the second jaw for clamping based on the second detection signal. A corresponding method for tape removal.

Abstract: A method for producing an optical article having a Fresnel microstructure and an injection molding system for producing such an article. The method includes heating and cooling a mold and applying a pressure to a thermoplastic material during injection molding of the optical article to facilitate formation of the Fresnel microstructure.

Abstract: Disclosed is a method wherein the following steps are performed: a) the subject is placed in a natural posture, in which at least one of the gaze directions of the subject points to a visual target, b) an image capture apparatus is placed between the head of the subject and the visual target, c) the relative posture of the image capture apparatus and head of the subject is adjusted in order for the pupil of the image capture apparatus to be positioned close to the gaze direction of at least one of the eyes of the subject, d) an image of the head of the subject is captured, and e) the at least one geometrico-morphological parameter is deduced from this image.

Abstract: The invention provides a method for determining at least one filter for a transparent support, the method comprising the following steps: —determining a quantity representative of a light sensitivity threshold of the user; —determining, for each light environment among a group of light environments, an index representative of the level of protection required by the user; —determining a score for each light environment among the group of light environments (40) and for each filter among a group of filters, said score being representative of the capacity of the filter to reach the level of protection required by the user, determining at least one filter among the group of filters based on the scores of said at least one filter in a plurality of light environments (40) among the group of light environments.

Abstract: The present disclosure relates to a method and device for evaluating a fit of visual equipment. In an embodiment, the method (105) includes receiving (110) an image(s) of a face of a user, identifying (115) a subset of eyeglasses from a database that satisfy a preliminary fit threshold, determining (120) an eyeglass rim plane of a candidate eyeglass, determining (125) an eyeglass pads plane of the candidate eyeglass, generating (130) at least one 2D profile of a nose of the user, generating (140) at least one 2D profile of a nasal section of a frame of the candidate eyeglass, virtually docking (150) the candidate eyeglass on the nose of the face of the user, calculating (170), when the virtually docked candidate eyeglass satisfies a secondary fit threshold, a final fit of the virtually docked candidate eyeglass, the final fit being defined by at least one of a comfort criterion and/or an aesthetic criterion.

Abstract: A system for generating a virtual image for a wearer includes: a lens providing vision of a real scene and having refractive power related to the prescription of the wearer, a directive light source that emits directive light beams to create the virtual image, a reflecting element positioned on or in the lens that receives and redirects the directive light beams emitted by the directive light source toward a convergence area of an eye of the wearer, a dynamical optical element for modifying the received light beams, and a memory storing prescription data relative to the prescription of the wearer, the dynamical optical element modifying the light beams at the convergence area so as to compensate at least partly the prescription of the wearer.

Abstract: The invention relates to a group of novel electrochromic compounds. More specifically, it relates to benzazoles and condensed azole compounds substituted with one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

Abstract: An electrochromic cell including a chamber including an electrochromic formulation, and at least two electrodes that are part of the same electrochemical cell and that include a conducting material deposited on the inner surface of the chamber. At least one of the electrodes includes a layer of a transparent conductive oxide and a layer including a conductive polymer, the layer including a conductive polymer being the only part of the at least one electrode that is in contact with the electrochromic formulation.

Abstract: A method of manufacturing an optical lens including at least one electronic component. The method includes providing a mechanical reference system on an optical lens blank, the optical lens blank being configured to be processed to form the optical lens, providing edging data configured to be used to edge the optical lens blank to form the optical lens, and embedding the at least one electronic component in the optical lens based on edging data and on the mechanical reference system.

Abstract: A lens element worn in front of an eye of a person includes a refraction area having a refractive power based on a prescription for the eye of the person, and a plurality of at least three optical elements, wherein the optical elements are configured so that along at least one section of the lens the mean sphere of optical elements increases from a point of the section towards the peripheral part of the section.

Abstract: A method of evaluating the efficiency of a myopia control solution for a person. The method includes providing an initial value of a prolateness indicator of at least one eye of the person, determining a second value of the prolateness indicator of the at least one eye of the person after having the person use the myopia control solution over a given period of time, and evaluating the efficiency of the myopia control solution by comparing the evolution between the initial and second values of the prolateness indicator of the at least one eye with a value of reference.

Abstract: An optical device for a wearer intended to form an electrochromic ophthalmic lens, spectacle glasses comprising two such lenses fitted on a frame, and a method for manufacturing such an optical device. The optical device includes at least one electrochromic cell which has a rear shell and a front shell respectively defining for the optical device a backside surface proximal to at least one eye of the wearer and an opposite front surface, the rear shell and the front shell being provided with at least one pair of transparent electrodes and delimiting a sealed cavity filled with an electrochromic composition. One of the front shell and the rear shell includes a mineral glass substrate, and the other one includes an organic polymeric substrate, and the electrochromic cell forms a hybrid mineral-organic ophthalmic lens selected from plano lenses and prescription lenses satisfying a prescription for power correction.