Abstract: The invention relates to an optical article having a substrate made of an optical material comprising a polymer matrix and an improved light transmission in the visible range. The substrate comprises an external layer in which particles are embedded into the polymer matrix, the refractive index of the particles Rp being lower than the refractive index of the polymer matrix Rs.

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, wherein said multilayered interferential coating has: ? mean light reflection factor in the visible region, noted R v, that is lower than or equal to 2.5% for at least an angle of incidence lower than or equal to 35°; ? a mean reflection factor for wavelengths ranging from 800 nm to 900 nm, noted R mET (800-900), that is lower than or equal to 1.

Abstract: According to the invention, a first coating and a second coating are configured so that the optical system has a colorimetric parameter of evaluation of ghost image visibility lower than a predetermined threshold, said colorimetric parameter of evaluation being based on total ghost image transmission coefficient of at least one ghost image formed by internal reflection of a light beam from a light source between at least the first surface and the second surface and by transmission through the optical system, the total ghost image transmission coefficient being integrated over a visible spectral band and depending on a spectrum of the light source.

Abstract: This 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 antireflective coating comprising at least one low refractive index layer (LI) having a refractive index lower than 1.55 at 550 nm, named hereafter first LI layer, one first high refractive index layer (HI) having a refractive index higher than or equal to 1.55 at 550 nm, named hereafter the first HI layer, and one encapsulated metal film (EMF) comprising a metal island layer (MIL) that is encapsulated between a first layer (L1) and a second layer (L2), said first layer (L1) and said second layer (L2) being both composed of at least one dielectric material, characterized in that said—the first layer (L1) is a second LI layer having a refractive index lower than 1.

Abstract: The invention relates to an optical article, such as an ophthalmic lens, comprising a transparent substrate with a front main face and a rear main face, at least one of its main faces being coated with a multilayer interference coating, such as a mirror coating or an antireflective coating, which is the top coating of the article, wherein the outermost layer of the top coating comprises a material having antibacterial properties, or wherein the outermost layer of the top coating is a porous layer and the layer directly underneath the outermost layer of the top coating is a layer comprising a material having antibacterial properties.

Abstract: The present invention relates to an optical lens comprising a substrate with a front main face and with a rear main face, at least one of the main faces being coated with an antireflection coating, such that in the range [0°-50° ] of angles of incidence ?, the mean light reflection factor Rv(?) on said coated main face presents a minimum value Rvmin for an angle of incidence ?min, comprised in the range [20°-50° ], and Rvmin/Rv(15°)<0.95, Rv(15°) being the mean light reflection factor for an angle of incidence ? of 15° on said coated main face. The optical lens is also useful to inhibit reflection of light in the ultraviolet range.

Abstract: The invention relates to an optical article having a substrate made of an optical material comprising a polymer matrix and an improved light transmission in the visible range. The substrate comprises an external layer in which particles are embedded into the polymer matrix, the refractive index of the particles Rp being lower than the refractive index of the polymer matrix Rs.

Abstract: This invention relates to an ophthalmic lens comprising a multilayered interferential coating and to a manufacturing method thereof. The ophthalmic lens comprises: an organic substrate having a front main face and a rear main face, and a multilayered interferential coating (30) which is coated on at least one of the front main face and the rear main face, According to the invention, the multilayered interferential coating (30) comprises at least one graphene layer (2) which has a uniform thickness of between 0.1 nm to 1 nm.

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 composed of at least: (i) a wetting layer; (ii) a metal layer, wherein the metal is selected from silver, gold or copper or mixtures thereof; (iii) a protective layer which is able to avoid oxidation of said metal layer, characterized in that wetting layer (i) is in direct contact with metal layer (ii), with the proviso that said multilayered antireflective coating does not comprise silicon nitride and wherein (ii) the metal layer has a physical thickness equal to or higher than 6 nm.

Abstract: An ophthalmic lens having a main front face and a main rear face includes: an element for cutting off ultraviolet (UV) light incident on the main front face of the ophthalmic lens; an anti-reflection coating on the main rear face of the ophthalmic lens, having a weighted average reflection factor in the UV region of less than or equal to 7%; and at least one element for at least partially blocking the blue light in the wavelength region from 400 to 460 nanometers, preferably from 420 to 450 nanometers.

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: An ophthalmic lens comprising an antireflective stack which strongly reduces reflection in the UV range and in the visible range. The antireflective stack comprises composite high index layers comprising zirconium oxide and another metal oxide.

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: 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: An ophthalmic lens comprising an antireflective stack which strongly reduces reflection in the UV range and in the visible range. The antireflective stack comprises composite high index layers comprising zirconium oxide and another metal oxide.

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 composed of at least: (i) a wetting layer; (ii) a metal layer, wherein the metal is selected from silver, gold or copper or mixtures thereof; (iii) a protective layer which is able to avoid oxidation of said metal layer, characterized in that wetting layer (i) is in direct contact with metal layer (ii), with the proviso that said multilayered antireflective coating does not comprise silicon nitride and wherein (ii) the metal layer has a physical thickness equal to or higher than 6 nm.

Abstract: A photochromic ophthalmic lens includes a photochromic substrate and a filter having at least one layer formed on the main front face of the lens. The filter has a total thickness ?700 nm and the front face has: an average UVA reflection factor over a range of wavelengths from 330 to 380 nanometers that is ?40%, for an incident angle between 0° and 15°, an average blue reflection factor over a range of wavelengths from 420 to 450 nanometers that is ?5%, for an incident angle between 0° and 15°, a spectral reflectivity curve for an incident angle between 0° and 15°, the reflectivity curve having a reflectivity maximum at a wavelength <435 nanometers, and a width at mid-height ?70 nanometers, and for an incident angle between 0° and 15°, ?spectral=1?[R0°-15° (480 nm)/R0°-15° (435 nm)], with ?spectral?0.8.

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: An ophthalmic lens having a front and back face, at least one including a filter, which provides the main face/filter with the following properties: an average blue reflectance factor within a wavelength ranging from 420-450 nm, which ?5%, for an angle of incidence ? ranging from 0°-15°, a spectral reflectivity curve for ?, having: a maximum reflectivity at a wavelength <435 nm, and a full width at half maximum ?80 nm, and for ? ranging from 0°-15° and for ?? ranging from 30°-45°, a parameter ?(?,??)=1?[R??(435 nm)/R?(435 nm)], such that ?(?,??)?0.6, where R?(435 nm) represents the reflectivity value of the main face/filter at a wavelength of 435 nm for ?, and R??(435 nm) represents the reflectivity value of the main face/filter at a wavelength of 435 nm for ??.

Abstract: A photochromic ophthalmic lens includes a photochromic substrate and a filter having at least one layer formed on the main front face of the lens. The filter has a total thickness ?700 nm and the front face has: an average UVA reflection factor over a range of wavelengths from 330 to 380 nanometres that is ?40%, for an incident angle between 0° and 15°, an average blue reflection factor over a range of wavelengths from 420 to 450 nanometres that is ?5%, for an incident angle between 0° and 15°, a spectral reflectivity curve for an incident angle between 0° and 15°, the reflectivity curve having a reflectivity maximum at a wavelength <435 nanometres, and a width at mid-height ?70 nanometres, and for an incident angle between 0° and 15°, ?spectral=1?[R0°-15°(480 nm)/R0°-15°(435 nm)], with ?spectral?0.8.