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:
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:
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:
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 invention concerns a polarizing optical element comprising a basic transparent optical element (1) and a layered structure (2) incorporating a polarizing film (2a). The polarizing film is of the dichroic colouring type and uniaxially oriented. The layered structure is bonded on the basic optical element via a layered structure (3) including at least one pressure-sensitive adhesive material layer. Through the use of pressure-sensitive adhesive material, the polarizing film (2a) maintains during bonding a high polarizing efficiency and an optical quality compatible with the numerous applications of the optical element, in particular ophthalmological applications.
Abstract:
The present invention relates to a process for transferring at least one coating onto at least one geometrically defined surface of a lens substrate. In a preferred embodiment, the transparent adhesive composition is selected from the group consisting of pressure-sensitive adhesives and hot-melt adhesives .
Abstract:
The inventive method consists in transferring a pattern (P) onto the optical article (1) in the form of one or several portions of transferable material (3) retained by a pressure-sensitive adhesive material layer (2) and in applying transferable material portions with the aid of a pad by placing the adhesive material layer between the pad and a pattern receiving article. The use of the pressure-sensitive adhesive material makes it possible to use the different materials in the form of a transferable material. Said method is particularly suitable for producing patterns, in particular in the form of holograms on optical lenses, in particular ophthalmic lenses.
Abstract:
Un élément optique polarisant comprend un élément optique de base transparent (1) et une structure en couche(s) (2) incorporant un film polariseur (2a). Le film polariseur est du type à colorant dichroïque et orienté uniaxialement. La structure en couche(s) est collée sur l'élément optique de base par l'intermédiaire d'une structure en couche(s) (3) comprenant au moins une couche d'un matériau adhésif sensible à la pression. Grâce à l'utilisation de matériau adhésif sensible à la pression, le film polariseur (2a) conserve pendant le collage une efficacité de polarisation élevée et une qualité optique compatible avec de nombreuses applications de l'élément optique, notamment des applications ophtalmiques.
Abstract:
Un procédé d'inscription de données sur une lentille optique (2) comprend un enregistrement d'une image source contenant les données. Un hologramme (3) de l'image source est alors généré, puis inscrit sur la lentille en occupant une portion de surface comprise entre 0,5mm2 et 15mm2. Les données peuvent être lues en éclairant la lentille par au moins un faisceau lumineux (101 ) à l'endroit de l'hologramme. Une image de lecture (105, 106) , qui reproduit l'image source, est ainsi formée à distance de la lentille, dans laquelle les données sont lisibles. La lentille peut être, en particulier, une lentille ophtalmique .