METHOD FOR ADDITIVELY MANUFACTURING AN OPHTHALMIC DEVICE AND MANUFACTURING SYSTEM CONFIGURED TO CARRY OUT SUCH A METHOD

• Main Authors: LEITE, Pierre, LECOMPERE, Maxime, PADIOU, Jean-Marc
• Format: Patent
• Language: English; French
• Published: 19.01.2023
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention provides a method for additively manufacturing an ophthalmic device, comprising the step of additively manufacturing a plurality of layers of a predetermined material in order to obtain the ophthalmic device, each layer being manufactured by projecting and polymerizing at least one image on a surface of a volume of the predetermined material; wherein, for at least one layer, the method comprises a step of forming a first part of said layer with a first image having a first contrast level and a step of forming a second part of said layer, at least partially distinct from said first part, with a second image having a second contrast level, said first contrast level being higher than a predetermined sharp threshold and said second contrast level being lower than a predetermined blurring threshold. L'invention concerne une méthode de fabrication additive d'un dispositif ophtalmique, comprenant l'étape de fabrication additive d'une pluralité de couches d'un matériau prédéterminé afin d'obtenir le dispositif ophtalmique, chaque couche étant fabriquée par projection et polymérisation d'au moins une image sur une surface d'un volume du matériau prédéterminé ; pour au moins une couche, la méthode comprenant une étape de formation d'une première partie de ladite couche avec une première image ayant un premier niveau de contraste et une étape de formation d'une seconde partie de ladite couche, au moins partiellement distincte de ladite première partie, avec une seconde image ayant un second niveau de contraste, ledit premier niveau de contraste étant supérieur à un seuil de netteté prédéterminé et ledit second niveau de contraste étant inférieur à un seuil de flou prédéterminé.