Abstract: Disclosed is an optical article, preferably an ophthalmic lens, including a substrate having at least one main surface and a precursor coating of an anti-fog coating, the precursor coating in direct contact with either the main surface of the substrate, or with a first coating, when the main surface of the substrate is coated with a first coating, the precursor coating being formed by a deposition of at least one hydrophilic compound A on the substrate or on the first coating, including an inner portion in which the compound A is grafted on the substrate or on the first coating, and an outer portion that can be removed by washing and/or wiping, resulting from the deposition of the compound A, and being coated with a temporary layer, in direct contact with the compound, including at least one compound selected from the metal fluorides and the compounds including magnesium and oxygen.

Abstract: A method for determining a progressive ophthalmic lens, comprising determining first, second and third intermediate values of regression as the strongest regression that can be applied on the front surface of the lens while keeping a mean sphere value in at least a portion of the lower part of the rear surface of the lens less or equal to, respectively, first, second and third predetermined values; and determining a value of regression (d) for the front surface as the maximum value among the first, second and third intermediate values of regression.

Abstract: A method for determining color characteristics reflected by an interference filter, a method for depositing such an interference filter, and an assembly of an interference filter and an object, the method including: determining color coordinates of an object; and determining at least one color characteristic reflected by the interference filter according to the determined color coordinates, respecting an isoperception law.

Abstract: An optical lens includes: (i) a temporary coating for protection against degradation at least partially covering a surface of the lens, the temporary protective coating including an outermost layer mechanically degradable through friction and/or contact, and (ii) a removable film having a first side and a second side, which adheres to the outermost layer of the temporary protective coating through its first side, the first side of the removable film including at least one surface portion, which, when applied to the outermost layer of the temporary protective coating, includes at least one adherent zone and at least one non-adherent zone distributed across the surface portion.

Abstract: Eyeglass lenses have at least a portion of their edge shaped to reflect light away from an eye of a wearer, such as the edge being disposed at an acute angle with respect to a principal axis of the lens, toward the back surface of the lens. Alternatively or additionally, the edge may include a plurality of edge surfaces disposed at an acute angle with respect to a principal axis of the eyeglass lens, toward the back surface of the eyeglass lens, or at least one edge surface may be disposed at an acute angle with respect to the front surface of the lens and at least one other edge surface may be disposed at an acute angle with respect to the back surface of the lens. As yet another alternative, the edge may be rounded with progressive angles to have an edge axis directed away from the wearer's eye.

Abstract: This invention relates to an ophthalmic lens comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered antireflective coating comprising a stack of at least one high refractive index layer (HI) having a refractive index higher than or equal to 1.55 and at least one low refractive index layer (LI) having a refractive index lower than 1.55, characterized in that: said at least one high refractive index layer (HI) is in direct contact with said at least one low refractive index layer (LI) forming a bilayer, said bilayer has a physical thickness lower than or equal to 60 nm, said bilayer is, in the direction moving away from said transparent substrate, in second to last place in said multilayered antireflective coating, said multilayered antireflective coating has a mean reflection factor Ruv between 280 nm and 380 nm, lower than 5% for an angle of incidence in the range from 20° to 50°.

Abstract: A device for measuring the objective ocular refraction of a patient for a plurality of visual ranges, which includes a variable proximity optical sight system capable of selectively generating a first target and a second target and an image-capturing device having an optical measurement axis intended for being aligned with a line of sight of the patient, the image-capturing device being capable of capturing a first ocular refraction image when the first target is activated and a second ocular refraction image when the second target is activated. The image-capturing device and the optical sight system are arranged such that the optical measurement axis and the optical sight axis are arranged such that the optical measurement axis and the optical sight axis are contained in a single plane and the optical measurement axis is tilted at an angle alpha between +5 degrees and +85 degrees relative to the horizontal.

Abstract: A system for the optical reading of markings printed on an ophthalmic lens (2), includes an image capture device (26), a light source (15) and a support (18, 31) which are configured so that, when the lens is received by the support with a masking element (39) which covers the markings, the source illuminates the lens while rendering the markings visible to the device; and a mobile element on which the source is fixed and which admits a retracted position where it is distanced from the support and a working position where it surrounds at least partially the support and the source looks at the support and these latter are configured so that the source illuminates a rim (34) of the lens so that the light penetrates into its mass (35) and reaches the masking element (33) through the lens.

Abstract: The invention relates to vision compensating spectacles comprising means of support (130, 140, 152) on a wearer's face and at least one optical subassembly (110, 120) mounted on the support means (130, 140, 152) opposite at least one of the wearer's eyes. The optical subassembly (110, 120) 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.

Abstract: Methods for augmented reality, and to lenses, systems and methods for improving visual comfort of a wearer equipped with a head-mounted device configured for display of information content.

Abstract: The present invention proposes a polymer composition of manufacturing ophthalmic lens by polymerization of polymerizable composition wherein the shrinkage phenomenon is minimized. The polymerizable composition comprised two different categories of monomers which are able during crosslinking to control and limit said chemical shrinkage. The present invention comprises also ophthalmic lens obtained from said polymer composition using a manufacturing process of casting or additive manufacturing.

Abstract: UV curable coating composition includes a non hydrolyzed epoxy- alkoxy-silane, polyfunctional acrylate and/or epoxy compounds and a cationic and/or free-radical photo-initiator; with polyfunctional acrylate and/or epoxy compounds representing more than 40 weight % of the total dry matter and the composition being without any hydrolyzed epoxy-alkoxy-silane. This composition is coated and cured on an optical substrate.

Abstract: 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.

Abstract: Implementations described and claimed herein provide systems and methods for adding a chosen functional coating on an optical surface of a spectacle lens. In one implementation, it is determined if identified features of the optical surface of the spectacle lens are compatible with the chosen functional coating according to a first set of rules. The features of the optical surface are identified based on an analysis of a quality of the optical surface. Manufacturing information for the chosen functional coating is generated based on the determined compatibility. The manufacturing information includes information for depositing the chosen functional coating on the optical surface where the identified features are compatible with the chosen functional coating and on a modified optical surface where the identified features are not compatible with the chosen functional coating.

Abstract: A method of preparing an ophthalmic lens (30) to be fitted into a surround of a spectacle frame, includes: acquiring a longitudinal profile (50) of the surround; centering the longitudinal profile; acquiring the geometry of at least one part of an optical face of the ophthalmic lens; calculating a treatment setpoint for treating the ophthalmic lens; and treating the ophthalmic lens. The acquiring operation includes a step of calculating the bidimensional coordinates of a plurality of measurement points (P?i, P?i) situated along two distinct longitudinal strands (51, 52) which are chosen in such a way that they define between them a band which extends along the longitudinal profile, and a step of examining the ophthalmic lens to acquire the tridimensional coordinates for the measurement points with a view to calculating the treatment setpoint.

Abstract: A method for determining personalized near addition value for non-presbyopes, including measuring fusional amplitudes and phoria with at least one addition value, on both eyes of a person at a working distance; finding a mathematical function that predicts the change of a pair of fusional amplitudes and phoria as a function of addition value based on the addition value and the measured fusional amplitudes and phoria; and determining the near addition value according to a suitable relationship between the pair of fusional amplitudes and phoria on the mathematical function.

Abstract: A method of calculating an optical system (OS) of an ophthalmic lens according to a given spectacle frame, said ophthalmic lens comprising a back surface (BS) and a front surface (FS) arranged to deliver an ophthalmic vision image (VI), a light-guide optical element having a proximal surface (PS) and a distal surface (DS), said light-guide optical element being arranged to output a supplementary image (SI), wherein the method comprises the steps of: providing at least a morpho-geometrical parameter data of the frame or of the light-guide optical element; optimizing the optical system (OS) according to at least the morpho-geometrical parameter data as a target.

Abstract: Disclosed is a device for measuring ocular refraction and a geometric-morphological parameter of an individual, including: a gaze-stimulating target placed so as to stimulate the gaze of the individual in a posture associated with a proximity value and a sight axis; an illuminating system able to generate at least one illuminating beam in the direction of the eyes of the individual; an image-capturing system; and a computer able to receive at least one first image captured by the image-capturing system. According to the invention, the image-capturing system is able to acquire an image of part of the face surrounding the eyes of the individual, and the computer is able to extract, from the acquired image, a first measurement of a glazing parameter and a first measurement of objective ocular refraction by refraction of the illuminating beam on the eyes of the individual in the given posture.

Abstract: The invention relates to a method for determining an ophthalmic lens wherein: a first and a second reference axes are determined, the first reference axis is comprised between [?T?20°, ?T+20° ] with ?T being the mean axis of astigmatism over a first temporal portion, and the second reference axis is comprised between [?N?20°, ?N+20° ] with ?N being the mean axis of astigmatism over a second nasal portion; a combined reference axis is determined as a linear combination of the first and second reference axes; over the first portion, the sphere value along the combined reference axis is greater than the sphere value along a perpendicular axis to the combined reference axis; and over the second portion, the sphere value along the combined reference axis is greater than the sphere value along a perpendicular axis to the combined reference axis.

Abstract: A method of blocking a lens member having a surface to be manufactured on a lens holding unit, the method comprising: a lens member providing step during which a lens member comprising engraved markings is provided, a contrast providing step during which contrast elements are placed on the engraved markings, a taping step during which the marked surface of the lens member is taped with an adhesive tape over the contrast elements, and a blocking step during which the lens member is blocked on a lens holding unit via the taped surface.