Essilor International

Maxime Lecompere

Pierre Leite

Manuel Theodet

Pierre Fromentin

Jean-Marc Padiou

Mathieu Feuillade

Loïc Quere

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. According to the disclosure, this method comprises: A—providing a curable material; B—curing said curable material inside sliced outlines (C1) whose geometry are determined according to the geometry of said optical element, said optical element comprising at least: a first volume element (V1) and a second volume element (V2), by forming the first volume element (V1) by irradiating the curable material with at least a first curing surface energy (E1) with a first light depth penetration value within the curable material (Dp1), and forming the second volume element (V2) by irradiating the curable material with at least a second curing surface energy (E2) with a second light depth penetration value within the curable material (Dp2), wherein said second light depth penetration value within the curable material (Dp2) is different from the first light depth penetration value within the curable material (Dp1).

Method and machine for the production of an optical element by additive manufacturing

A method and a device for the production of an optical element () 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 (C) 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 (A) that extends sensibly along said sliced outline than in a second area (A) situated within the first area, the curing surface energy applied to the second area being strictly lower than a first predetermined energy threshold.

Method for the production of an optical element by additive manufacturing

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 () by depositing a plurality of predetermined volume elements () of polymerizable material, a part of the optical element () 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 () comprises an unfinished peripheric surface (), said unfinished peripheric surface () having a relief pattern () formed by traces of the additive manufacturing process and having at least one depression () with regard to another part of the peripheric surface (), —coating said unfinished peripheric surface () with a layer () of coating liquid () configured to at least partially fill the at least one depression ().

Method for manufacturing an optical component with improved quality surface using additive manufacturing

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.

Method for the manufacturing of an optical element, optical element thus obtained

The invention relates to a method for outputting a manufacturing file for producing an optical element () from a curable material () 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.

Method and system for outputting a manufacturing file for producing an optical element

A method for manufacturing an optical element () from a curable material () using an additive manufacturing technology comprising steps of: providing a first portion of curable material (), forming a first part of the optical element by irradiating the surface () 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 () 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 higher than or equal to the first predetermined energy threshold. A manufacturing system () for manufacturing an optical element.

Growing community of inventors

Charenton-Le-Pont, France

Maxime Lecompere