Abstract:
The invention relates to an opto-electronic display device that comprises an optical guide (1) for transmitting an image-forming light beam, emitted from a miniature screen (2) and entering said guide through the rear surface (1A) thereof, towards the eye of a user (O) through said rear surface for visualising a virtual image (I), wherein said guide comprises two parallel surfaces, i.e. a front surface (1B) and a rear surface (1A), and a plurality of so-called output inner faces (F S ) which are made partially reflective by a corresponding treatment, are inclined relative to said rear and front surfaces, and redirect the light beam towards the eye. According to the invention, the guide (1) is encapsulated in an ophthalmic lens (3), and the front (1B) and rear (1A) surfaces have an optical insulation treatment.
Abstract:
According to the invention, in order to visualise the ultraviolet radiation reflection power of a glasses lens (10), a face of said lens is exposed to an ultraviolet radiation in order to reflect a portion of said radiation. The portion of the reflected radiation then activates a developer surface (3) having a visual appearance that changes under the influence of the received ultraviolet radiation. The developer surface is watched in real time by an observer (100). Such a visualisation is particularly quick, simple and demonstrative, and can be used in an optician's shop to help a client chose a glasses lens.
Abstract:
The invention relates to a polarisation splitter comprising a substrate which is provided with a pile of alternating layers of PrTiO3 and a material having a lower refractive index. The thickness of said layers e1 and e2 respectively satisfies the relations of the equations (I) and (II) wherein lambda represents the wavelength covered, n1 represents the refractive index of the first layer, and n2 represents the refractive index of the second layer. The invention also relates to a method for producing one such polarisation splitter. The inventive polarisation splitter can be used in an ophthalmic lens comprising inserts for projecting an image towards the user.
Abstract:
The invention concerns an article comprising a substrate having a main surface covered with a coating part of which at least is mesoporous and has a refractive index profile with optical function, the variation of which is imposed by the mesopore content and/or the filling factor of the mesopores. The profile may be such that the refractive index varies depending on the distance to a given axis, or such that the refractive index variation is monotone decreasing along any axis perpendicular to the surface of the substrate underlying the mesoporous part of said coating and oriented away from the substrate. The invention also concerns methods for making said articles, which differ depending on the technique from which the refractive index profile is created. The invention is applicable to ophthalmological optics.
Abstract:
This invention relates to an ophthalmic lens with a low reflection both in the ultraviolet region and in the visible region,comprising a substrate provided on its rear main face with a multilayered antireflective coating(3-7layers) comprising a stack of at least one layer with a high refractive index and at least one layer with a low refractive index, having a mean reflection factor on the rear face in the visible region R m lower than or equal to 1.15%,a mean light reflection factor on the rear face in the visible region R v lower than or equal to 1%,a mean reflection factor R UV on the rear face between 280nm and 380 nm, weighted by the function W(l) defined in the ISO 13666:1998 standard,lower than 5%, for angles of incidence of 30°and 45°, the antireflective coating outer layer being a silica-based layer. The lens according to the invention does especially prevent the reflection of the UV radiation produced by light sources located behind the wearer.
Abstract:
This invention relates to an ophthalmic lens with a low reflection both in the ultraviolet region and in the visible region, comprising a substrate provided on its rear main face with a multilayered antireflective coating (3-7 layers) comprising a stack of at least one layer with a high refractive index and at least one layer with a low refractive index, having a mean reflection factor on the rear face in the visible region R m lower than or equal to 1.15%, a mean light reflection factor on the rear face in the visible region R v lower than or equal to 1%, a mean reflection factor R UV on the rear face between 280 nm and 380 nm, weighted by the function W(λ) defined in the ISO 13666:1998 standard, lower than 5%, for angles of incidence of 30° and 45°, the antireflective coating outer layer being a silica-based layer. The lens according to the invention does especially prevent the reflection of the UV radiation produced by light sources located behind the wearer.
Abstract:
Procedimiento de fabricación de una lente de corrección de la vista que tiene una cara anterior (1) y una cara posterior (2) y en la cual haces ópticos emitidos por un elemento óptico de un sistema de generación (7) de haces ópticos se introducen a través de una superficie de entrada (6a, 8a) y se dirigen hacia el ojo (4) del portador para permitir la visualización de un contenido de información (I), estando dicho inserto dispuesto en dicha lente cuando se moldea esta última en un molde que tiene una primera parte del molde (10A) destinada al moldeo de dicha cara anterior (1) y una segunda parte del molde (10B) destinada al moldeo de dicha cara posterior (2) y estando totalmente contenido en la lente (3); procedimiento caracterizado porque dichos haces ópticos son reflejados numerosas veces entre dos caras denominadas caras de reflexión entre su introducción y su salida de la lente (3), siendo dichas dos caras de reflexión (5a, 5b) caras de un inserto óptico (5) transparente constituido por una guía de luz; dicha superficie de entrada (6a) está formada por realización de una cavidad moldeada en la lente y de la cual ella es el fondo y dicha cavidad está moldeada por medio de una plataforma (10C) solidaria de la segunda parte del molde (10B) y dicho inserto (5) se fija de manera provisional a esta plataforma antes del moldeo.
Abstract:
The invention relates to a method of manufacturing a vision correction lens that has a front face and a rear face, and into which light beams emitted by an optical element of a light beam generator system are introduced via an entry surface and directed towards the eye of the wearer to enable information content to be viewed, said light beams being reflected a plurality of times between two “reflection” faces between being introduced into the lens and exiting therefrom, said two reflection faces being faces of a transparent optical insert constituted by a light guide. According to the invention, said insert is completely contained within the lens.