Method for transferring a micron-sized pattern onto an optical article and optical article thus obtained
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorsCédric Begon, Christelle Defranco
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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.
Claims34
A method for transferring a micron-sized pattern onto a surface of an optical article which comprises the following steps:
- /a/ depositing a layer of at least one transferable material onto a surface of a stamp having hollows and protuberances forming the microrelief, of micron-sized or submicron-sized definition, corresponding to the pattern to be transferred;
- /b/ depositing a layer of a pressure-sensitive adhesive onto the surface of the substrate of the optical article;
- /c/ bringing the surface of the stamp which comprises the layer of transferable material into contact with the layer of pressure-sensitive adhesive;
- /d/ applying a pressure to the stamp;
- and
- /e/ moving the stamp away from the surface of the optical article comprising the layer of pressure-sensitive adhesive.
Dependencies are inferred from the claim text.