Abstract: The disclosure relates to a method and a device for the production of an optical element from a curable material by using an additive manufacturing technology.

Abstract: The disclosure relates to a method of concealing a non-optically transparent component of an optical article. The method comprises—providing (S7) an optical article comprising: —an optical lens comprising an eyeball side facing an eye of a person when the optical article is worn by the person and an object side opposing the eyeball side, the optical lens comprising on the object side an eyewear shape section extending from an outer contour of the optical lens to an inner contour, and—a non-optically transparent component extending at least partly over the eyewear shape section, and—concealing (S8) the non-optically transparent component by covering at least part of the eyewear shape section of the optical lens using an opaque material.

Abstract: A method of manufacturing an optical component having at least one optical function, comprising: —manufacturing using an additive manufacturing process at least part of an optical element (40) by depositing a plurality of pre-determined volume elements (14) of polymerizable material, a part of the optical element (40) being configured to provide at least a part of the optical function of an optical component, said additively manufacturing being performed such that the optical element (40) comprises an unfinished peripheric surface (42), said unfinished peripheric surface (42) having a relief pattern (44) formed by traces of the additive manufacturing process and having at least one depression (18) with regard to another part of the peripheric surface (42), —coating said unfinished peripheric surface (42) with a layer (50) of coating liquid (46) configured to at least partially fill the at least one depression (18).

Abstract: The invention relates to a method for outputting a manufacturing file for producing an optical element (100) from a curable material (50) by using an additive manufacturing technology, comprising the steps of:—acquiring the desired geometry of the optical element,—obtaining a discretization of the desired geometry in volume units described by data relative to position parameters of the volume units and to the dimension of the volume units,—associating at least a volume unit with a kinetic parameter that relates to the curing pace imposed to the curable material of the volume unit,—producing, using at least one processor, a manufacturing file comprising said data and said kinetic parameter for manufacturing at least the optical element, and—outputting said manufacturing file.

Abstract: A method and a device for the production of an optical element (100) from a curable material by using an additive manufacturing technology. This method comprises a multiplicity of curing steps for curing said curable material inside outlines (C1) whose geometry are determined according to the geometry of said optical element, by applying a curing surface energy onto the curable material that is higher in a first area (A1) that extends sensibly along said sliced outline than in a second area (A2) situated within the first area, the curing surface energy applied to the second area being strictly lower than a first predetermined energy threshold.

Abstract: A method for manufacturing an optical element (100) from a curable material (50) using an additive manufacturing technology comprising steps of: providing a first portion of curable material (50), forming a first part of the optical element by irradiating the surface (55) of the curable material with a first curing surface energy, the first curing surface energy being strictly lower than a first predetermined energy threshold and higher than a second predetermined threshold, and forming, after the irradiation of the first part with the first curing surface energy, at least a second part of the optical element, distinct from the first part of the optical element, by irradiating, with at least a second curing surface energy, the surface of the curable material, the second curing surface energy irradiating both the second part of the optical element (100) and at least a portion of the first part of the optical element, the sum of the first curing surface energy and the at least second curing surface energy being

Abstract: Disclosed is a method for the manufacturing of an optical element having a refractive index above 1.59 by additive manufacturing to the optical element obtained by such a method and to an ophthalmic lens including such an optical element.

Abstract: In a first aspect, the present invention concerns a kit for a polymerizable composition comprising a portion A constituted by a composition comprising at least one monomer (a1) that is reactive towards a cationic species (b) or a Lewis or Brönsted acid species, and at least one co-initiator, and a portion B comprising at least one cationic salt (e) selected from the salts with formula S1, S3, and S4 shown and defined in claim 1. In a second aspect, the present invention concerns a method of producing a coating or a composite material starting from polymerizable composition comprising at least one salt (e) selected from the salts with formula S1, S2, S3, and S4 shown and defined in claim 10, said composition being polymerized without adding external heat thereto.

Abstract: In a first aspect, the present invention concerns a kit for a polymerisable composition comprising a portion A constituted by a composition comprising at least one monomer (a1) that is reactive towards a cationic species (b) or a Lewis or Brönsted acid species, and at least one co-initiator, and a portion B comprising at least one cationic salt (e) selected from the salts with formula S1, S3, and S4 shown and defined in claim 1. In a second aspect, the present invention concerns a method of producing a coating or a composite material starting from polymerisable composition comprising at least one salt (e) selected from the salts with formula S1, S2, S3, and S4 shown and defined in claim 10, said composition being polymerised without adding external heat thereto.