Abstract:
The invention concerns a transparent optical component (10) comprising at least one transparent set of cells (15) juxtaposed parallel to a surface of the component, each cell being separated by walls (18) with apodized profile parallel to the surface of the component, and each cell being hermetically sealed and containing at least one substance with optical property. The cells (15) can in particular have a Gaussian profile of walls. The invention also concerns a method for making such an optical component as well as its use for making an optical element. The optical element can in particular be a spectacle lens.
Abstract:
A photochromic composition that is liquid at 20 °C and includes (a) at least one photochromic dye and (b) an ionic solvent selected from (b)(i) room-temperature ionic liquids (RTIL), (b)(ii) ionic liquid mixtures that are liquid at room temperature, and (b)(iii) room-temperature liquid mixtures of at least one ionic liquid and at least one organic solvent that is miscible therewith. The use of said photochromic composition in optical devices such as ophthalmic lenses is also described.
Abstract:
The invention relates to a transparent film comprising a base film (1) and a coating arranged in separate portions (2a) on a face of the base film (S1). The coating comprises an inorganic/organic hybrid or inorganic material. Separation lines (3) between the portions of the coating enable the film to be deformed without visible defects appearing in the coating. The film can then be applied to a curved surface (SO) of an optical element, such as an ophthalmic lens (10).
Abstract:
A method for printing a binary hologram on a manufactured product comprises the provision of a stamp with a pattern corresponding to the hologram (30). The product is initially coated with a metal layer. The stamp is inked with a masking solution (40) and pressed against the manufactured product (50). Then, the hologram print is obtained by selective etching of parts of the metal layer which are not masked (60). The method is adapted for printing holograms on optical lenses.
Abstract:
The inventive lens comprises an organic glass substrate having front and rear main surfaces, at least one primer coat deposited on at least one of the main surfaces of the substrate, whereby said primer coat consists of a mixture of at least biophasic particles, whereby a first phase is composed of a P1 soft-character polymer with a glass transition temperature (Tg) of less than 20 DEG C and a second phase is composed of a hard-character P2 polymer with a glass transition temperature (Tg) of more than 50 DEG C and at least one coat of an anti-abrasive covering composition deposited on the primer. The invention can be used for eye glasses.
Abstract:
A method wherein (a) a polymerisable composition (8) consisting of transparent organic glass is fed into a mould; (b) the composition is polymerised under such conditions that the resulting transparent organic glass substrate has at least one thin surface layer (10) polymerised with a degree of completion and/or cross-linking that is substantially lower than in the rest (9) of the substrate; and optionally (c) subjecting the substrate to thermal stress relief annealing. The method is useful for producing finished or semi-finished ophthalmic articles, particularly photochromic ophthalmic articles.
Abstract:
The invention relates to a method for making a device including at least one closed enclosure filled with at least one liquid and sealed by at least one flexible membrane containing an elastic material, wherein said method comprises the steps of: a) depositing at least one given material in a liquid form on a substrate (100); b) at least partially curing said given material (130); low-pressure depositing an elastic material on said cured material in order to form a membrane, the membrane and the substrate defining at least one closed enclosure filled with said given material; d) melting said given material (130) in order to make the same liquid again within the closed enclosure.
Abstract:
A transparent optical component comprises a set of cells (15) juxtaposed on a surface of the component. Each cell encloses a determined substance so as to endow the component with particular optical characteristics, and two neighbouring cells are separated by a wall (18). Some walls are not straight at the surface of the component, so that the light diffracted by the walls does not form any luminous glint or any flashing. In particular, the walls can be curved or made up of straight segments disposed end-to-end.
Abstract:
An optical component (10) comprises at least one transparent set of cells (15) juxtaposed parallel to a surface of the component, each cell having a size and a geometry that are different from those of its neighbours forming a network of cells with random distribution and random geometry, parallel to the surface of the component. Each cell is hermetically sealed and contains at least one substance with optical property. The invention also comprises a method of producing such an optical component and its use in the fabrication of an optical element. The optical element can in particular be a spectacle lens.
Abstract:
An optical component comprises a transparent network of cells juxtaposed and separated by walls parallel to a surface of the component, each cell being hermetically sealed and comprising at least one substance with an optical property, and all or part of the surface of said component comprises walls less than 100 nm thick. The optical component is thus pixelized by a cell network, the cells being separated by walls which may themselves be pixelized. Such an optical component is particularly useful for making optical elements such as ophthalmic lenses.