Abstract: The disclosure provides post-production methods for functionalization of optical quality films produced by top tier manufactures. The methods disclosed herein allow for the incorporation of different additives into existing films.

Abstract: This method for predicting at least one eye gazing parameter of a person wearing visual equipment includes steps of: measuring data of at least two individuals wearing visual equipment, such data including at least head motion parameters and eye gazing parameters of the individuals; measuring head motion parameters of the person in real-life conditions; comparing the head motion parameters of the person with the head motion parameters of the at least two individuals; and predicting the at least one eye gazing parameter of the person at least on the basis of the results of the comparing step and of the eye gazing parameters of the at least two individuals.

Abstract: Disclosed are optical elements and the methods of producing the same. The optical element contains two or more near infrared absorbers mixed in an optical substrate, and one or more functional film disposed on the optical substrate. The method of producing the optical element comprises mixing two near infrared absorbers with different near infrared wavelengths absorption ranges and residual colors with a precursor of an optical substrate. The mixture is subsequently processed to produce an optical element that has broad near infrared wavelength absorption range, a high near infrared absorption level, and/or homogeneous color distribution.

Abstract: A blocking device includes a support member configured for providing a rigid support to the semi-finished optical element, the support member including a support element made of a shape-memory material having a rigid state below a predetermined temperature and a plastic state above the predetermined temperature, and assuming in the absence of external forces a predetermined memory shape when heated above the predetermined temperature, the support member having a contact face onto which the first face of the optical element is to be applied, the contact face of the support member being a surface of the support element, the shape-memory material being configured for having adherence properties with respect to the first face of the optical element, the adherence properties being sufficient for attaching the first face of the optical element to the contact face of the support element.

Abstract: A method of manufacturing an optical lens (417, 901), comprising: obtaining (S301) a transparent thermoplastic (TP) carrier (410, 1210) with at least one smooth surface; printing (S305), via a 3-D printer on the side opposite to the at least one smooth surface of the transparent TP carrier (410, 1210), at least one transparent layer (420, 1220) using a thermoplastic filament (403), each transparent layer (420, 1220) having a predetermined light filtering property, thereby forming a functional layer (420, 1220); and performing (S307) an injection over-molding process (415) to fuse bond the functional layer (420, 1220) to a thermoplastic substrate thereby forming the optical lens, wherein the at least one smooth surface of the transparent TP carrier (410, 1210) forms a smooth surface of the manufactured optical lens (417, 901).

Abstract: The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any Ta2O5 layer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 100 nm, and a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer. A mean reflection factor selected from Ruv for UV light, Rv for visible light and RsNIR for near infrared light is higher than or equal to 10-15% on at least one main face.

Abstract: An application device is configured to clean grinding surfaces in a machine for grinding ophthalmic lenses, the application device including: a central portion having so as to mount the application device in the grinding machine; and a peripheral edge configured to receive an application surface to cooperate with the grinding surface of the grinding wheel so as to clean the grinding surface. It also relates to a cleaning kit including an application device and a cleaning solution, and to a method for cleaning grinding surfaces.

Abstract: The disclosure includes core-shell filament composition for additive manufacturing of ophthalmic lenses and ophthalmic lens components. The disclosure also includes a set of criteria for selecting core and shell thermoplastic combinations that exhibit high optical clarity, improved filament inter-strand diffusion, high inter-strand adhesion, and improved manufactured part strength when used in an additive manufacturing method like fused deposition modelling.

Abstract: Disclosed herein is an injection molding method for making optical thermoplastic lenses using 3D—printed functional wafers. The method employs a variable injection molding cavity temperature that is heated to at least wafer Tg—10° C.

Abstract: A system for determining a modification of an initial myopia control solution used by a myopic subject, comprising one or more memories having in memory values of individual features of said myopic subject and values of environmental parameters relative to conditions of use by said myopic subject of said initial myopia control solution and comprising one or more processors programmed to: determine an individual score linked to a role of said individual features in causing the myopia of said myopic subject, said individual score depending on said values of individual features, determine an environmental score linked to a role of said environmental parameters in causing the myopia of said myopic subject, said environmental score depending on said values of said environmental parameters, and determine said modification of said initial myopia control solution for said subject based on said individual and environmental scores.

Abstract: A lens element intended to be worn in front of an eye of a wearer, the lens element being adapted to provide a prescribed dioptric correction function in a prescription plane, the lens element including an arrangement of microoptical elements. When receiving a collimated beam of monochromatic light, the lens element is configured to produce a primary luminous intensity maximum in a prescription plane, and the arrangement of microoptical elements is configured to produce at least one first secondary luminous intensity maximum at a first proximity difference from the prescription plane and at least one second secondary luminous intensity maximum at a second proximity difference from the prescription plane, the first proximity difference and the second proximity difference having opposite signs.

Abstract: The present invention relates to a cross-linkable composition comprising an epoxy oligomer comprising at least six hydroxy groups, to a coating obtained by curing the cross-linkable composition and to an optical lens comprising said coating on a surface thereof, in particular on the edge surface thereof. The invention also relates to a method of preparing a coating for an optical lens and to a method of coating a surface of an optical lens, in particular the edge surface of an optical lens.

Abstract: 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.

Abstract: A method for monitoring an evolution of a visual acuity value of a user of a digital device configured for displaying optotypes at a chosen optotype size, and computing a guessing rate corresponding to a percentage of optotypes correctly identified by a user. The method includes determining a visual acuity reference value based on at least a predefined first guessing rate threshold of the displayed optotypes at an optotype reference size, testing the evolution of the visual acuity value by displaying optotypes at a first optotype size corresponding to the optotype reference size, measuring the guessing rate of the displayed optotypes, and, if the measured guessing rate is below the first guessing rate threshold by more than a tolerance value, remeasuring the guessing rate of displayed optotypes at a second optotype size, the second optotype size being superior to the first optotype size.

Abstract: A method for objectively determining the optimal correction of an optical refraction of a subject, comprising the steps of: a) providing said eye of the subject with successive distinct lens powers and recording the corresponding successive neural signals of the subject while said eye of the subject receives a visual stimulus through each lens power, until the recorded neural signal corresponding to one of the lens power shows a maximum neural activity as compared to all the other recorded neural signals (blocks E2 to E5), b) determining that the optimal correction of the ophthalmic refraction of the subject corresponds to a lens power with which the subject exhibits a neural signal showing a given reduced neural activity as compared to the maximum neural activity obtained in step a) (blocks E6 and E7).

Abstract: This method for determining specification parameters used to manufacture an optical article includes steps of: training at least one neural network to predict the specification parameters, by using a training data set including a plurality of training prescription parameters and corresponding training specification parameters; and predicting specification parameters of the optical article by the at least one neural network, from prescription parameters relating to the optical article, on the basis of the training.

Abstract: A lens element intended to be worn in front of an eye of a person comprising: a refraction area having a first refractive power based on a prescription for correcting an abnormal refraction of said eye of the person and a second refractive power different from the first refractive power; a plurality of at least three optical elements, at least one optical element having an optical function of not focusing an image on the retina of the eye so as to slow down the progression of the abnormal refraction of the eye.

Abstract: A lens element intended to be worn in front of an eye of a person comprising: a refraction area having a first refractive power based on a prescription for correcting an abnormal refraction of said eye of the person and a second refractive power different from the first refractive power; a plurality of at least three optical elements, at least one optical element having an optical function of not focusing an image on the retina of the eye so as to slow down the progression of the abnormal refraction of the eye.

Abstract: An ophthalmic element includes a vision base element and a film structure that is adhered to an optical surface of the vision base element, so that the film structure conforms to the optical surface. The film structure comprises at least one auxetic film that has a negative Poisson ratio. Using an auxetic film suppresses wrinkles, cracks and delamination that may appear in the ophthalmic element when the optical surface is synclastic.

Abstract: A lens element intended to be worn in front of an eye of a person comprising: a refraction area having a first refractive power based on a prescription for correcting an abnormal refraction of said eye of the person and a second refractive power different from the first refractive power, and a plurality of at least three optical elements, at least one optical element having an optical function of not focusing an image on the retina of the eye to slow down the progression of the abnormal refraction of the eye.