METHOD AND DEVICE FOR MANUFACTURING AN OPHTHALMIC LENS

• Main Authors: DELOISON, Florent, JAVAUX-LEGER, Clémentine, CHASSAGNE, Bruno, ANCELOT, Bastien, CALLIER, Benoit, MAURICE, Sébastien, DUBOIS, Frédéric
• Format: Patent
• Language: English; French; German
• Published: 27.10.2021
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CONTACT LENSES; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SOLDERING OR UNSOLDERING; SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method and a device for manufacturing an ophthalmic lens intended to be placed in front of an eye of a wearer, the ophthalmic lens having a desired optical function comprising a dioptric function adapted to a prescription of the wearer, the method comprising:- providing an optical element made of a first material having a first refractive index, the optical element being intended to be modified to manufacture the ophthalmic lens,- providing data relative to the modification of the optical element enabling to obtain the desired optical function,- determining at least one zone in the first material based on data, and- modifying the refractive index of the first material in the determined zone with focused femtosecond laser pulses according to data so as to obtain an ophthalmic lens having the desired optical function.