Abstract: The disclosure relates to an optical element intended to be worn in front of an eye of a human wearer. The optical element includes a dye composition configured so that, when the optical element is worn by a wearer having a given skin reflectance and is illuminated by a light source from a scene: —a first light beam is transmitted by the optical element towards the wearer, the first light beam having a first chroma; —a second light beam is transmitted by the optical element towards the scene after being reflected by the skin of the wearer, the second light beam having a second chroma; and —the absolute difference between the second chroma and the first chroma is greater than 6.

Abstract: The invention relates to an optical article comprising an anti-reflective edge coating, and to processes for coating an edge an surface of optical article, such as an optical lens, with an anti-reflective coating. The anti-reflective edge coating of optical article according to the invention is suitable for reducing and/or cancelling the visibility of at least one myopia ring and/or white ring.

Abstract: The invention relates to an optical article 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 interferential 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 layer lower than 1.55, characterized in that said multilayered interferential coating has a mean reflection factor for wavelengths ranging from 445 nm to a predetermined maximum wavelength higher than or equal to 1185 nm, noted Rm (445-?1185), that is lower than or equal to 2.9%, preferably 2.6% at an angle of incidence lower than or equal to 45°.

Abstract: The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, said rear main face of which being successively coated with: —(A) a first high refractive index sheet having a refractive index higher than 1.55, which does not comprise any TaaOs layer, —(B) a second low refractive index sheet having a refractive index of 1.55 or less in direct contact with the former sheet, —(C) a third high refractive index sheet having a refractive index higher than 1.

Abstract: Disclosed is an optical article including a substrate having at least one main face coated with a reflective coating including a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, in which the thicknesses of the layers in the reflective coating have been optimized according to specific design rules in order to boost the abrasion resistance of the optical article.

Abstract: The present invention concerns an optical system intended to be held by a frame and worn by a wearer, the optical system comprising a lens, the lens further comprising a metasurface formed by at least a set of nanostructures, at least the lens and the metasurface being designed to achieve an optical system transmission target optical function and an optical system reflective target optical function.

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: Disclosed is an optical article including a substrate having a front main face and a rear main face, the rear main face being coated with a multilayer antireflection coating. The outermost layer of the multilayer antireflection coating is a layer A containing silicon, carbon and fluorine atoms, the layer A having a refractive index lower than or equal to 1.45 and a thickness higher than or equal to 20 nm. The mean light reflection factor Rv on the rear main face between 380 nm and 780 nm is lower than or equal to 1.5%. The mean reflection factor Ruv on the rear main face between 280 nm and 380 nm, weighted by the function W (2) defined in the ISO 13666:1998 standard, is lower than or equal to 7%, for an angle of incidence of 35°.

Abstract: Disclosed is an ophthalmic lens including a transparent substrate with a front main face and a rear main face, at least one of the main faces being coated with a multilayered interferential stack (IF stack), including at least one HI layer having a refractive index higher than or equal 1.55 and at least one LI layer having a refractive index lower than 1.55, characterized in that an electrochromic stack (EC stack): is part of the multilayered interferential stack; or is directly deposited onto the multilayered interferential stack, so as to form a multilayered interferential coating (IF coating).

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 50 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. The reflection performance on at least one main face is improved in scotopic conditions, fornear infrared light or for a wide range of angles of incidence.

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, a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer, and a filtering interferential system that selectively reflects or transmits visible light in a narrow range of wavelengths.

Abstract: An article including a substrate having at least one main surface coated with a layer A having a refractive index lower than or equal to 1.50, said layer A being obtained by deposition of activated species issued from at least one compound C in gaseous form, containing in its structure at least one Si-fluoroalkyl group, at least one carbon atom, at least one hydrogen atom and optionally at least one nitrogen atom and/or at least one oxygen atom, the deposition of said layer A being carried out by applying a bombardment with an ion beam to layer A while layer A is being formed, and said layer A being formed in the absence of inorganic precursor compounds. Application to the preparation of interferential coatings.

Abstract: The invention concerns method and system for determining a lens of customized color, said method comprising the steps of determining a target colorimetric data set; providing access to a database comprising data representing colors; using a plurality of simulation modules to calculate, based on said data from the database, a plurality of simulated colorimetric data of the lens substrate combined with a mixture of dyes of determined dye(s) combination, composition and amount or with a multilayer stack as a function of determined layers composition and thicknesses; and, color matching the plurality of simulated colorimetric data with the target colorimetric data set so as to determine one or a plurality of combinations of said lens substrate with a determined mixture of dyes or with a determined multilayer stack.

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. The mean reflection factor RUV on said rear main face between 280 nm and 380 nm, weighted by the function W(?) defined in the ISO 13666:1998 standard, is lower than 10%, for an angle of incidence of 35°.

Abstract: An optical article includes a substrate with front and rear main faces, one main face coated with a columnar micro- or nano-structured coating. The substrate and optical article are transparent in at least a part of the visible region ranging from 380 to 780 nm, along at least one incidence angle. The columnar micro- or nano-structured coating includes an array of columns including each a core and an upper layer covering the core, the core and the upper layer being structurally and/or chemically different and have light absorbing properties with an extinction coefficient “k” ?10-2 in the spectrum 250-2500 nm and are able to cause a change in transmission or in reflection of incident light through the optical article as a function of the angle of incidence of light. Also disclosed is a method for manufacturing an optical article including a columnar micro- or nano-structured coating.

Abstract: The invention relates to an optical article 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 interferential 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 layer lower than 1.55, characterized in that said multilayered interferential coating has a mean reflection factor for wavelengths ranging from 445 nm to a predetermined maximum wavelength higher than or equal to 1185 nm, noted Rm (445 - ?1185), that is lower than or equal to 2.9%, preferably 2.6% at an angle of incidence lower than or equal to 45 °.

Abstract: The invention relates to an optical article comprising an anti-reflective edge coating, and to processes for coating an edge an surface of optical article, such as an optical lens, with an anti-reflective coating. The anti-reflective edge coating of optical article according to the invention is suitable for reducing and/or cancelling the visibility of at least one myopia ring and/or white ring.

Abstract: An ophthalmic tinted glass (10) comprises a substrate-forming base eyeglass (1), a first layered structure (2) which covers a convex face (Cx) of the base eyeglass, and optionally a second layered structure (3) which covers a concave face (Cc) of the base eyeglass. The first layered structure has a function of selective reflection increase, and the second layered structure is antireflective. Such ophthalmic tinted glass produces solar protection while having a mean transmittance value in a wavelength range from 460 nm to 10 nm, or 465 nm to 495 nm, which is high enough for avoiding biological, hormonal and behavioural disorders for a wearer of the tinted glass.

Abstract: The disclosure relates to an optical element intended to be worn in front of an eye of a human wearer. The optical element includes a dye composition configured so that, when the optical element is worn by a wearer having a given skin reflectance and is illuminated by a light source from a scene: —a first light beam is transmitted by the optical element towards the wearer, the first light beam having a first chroma; —a second light beam is transmitted by the optical element towards the scene after being reflected by the skin of the wearer, the second light beam having a second chroma; and —the absolute difference between the second chroma and the first chroma is greater than 6.

Abstract: The present invention relates to an article comprising a substrate having at least one main surface coated with a layer A having a refractive index lower than or equal to 1.50, said layer A being obtained by deposition of activated species issued from at least one compound C in gaseous form, containing in its structure at least one Si-fluoroalkyl group, at least one carbon atom, at least one hydrogen atom and optionally at least one nitrogen atom and/or at least one oxygen atom, the deposition of said layer A being carried out by applying a bombardment with an ion beam to layer A while layer A is being formed, and said layer A being formed in the absence of inorganic precursor compounds. Application to the preparation of interferential coatings.