Process and machine for manufacturing an ophthalmic lens
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorsLoic QUERE, Alexandre GOURRAUD, Pascal ALLIONE, Cedric BEGON
Life of this patent
Estimating the term…
Abstract
A process for manufacturing an ophthalmic lens (10) having at least one optical function, includes: a step (100) of additively manufacturing the ophthalmic lens (10) by depositing a plurality of preset volume elements of at least one material having a preset refractive index in order to form a target geometric envelope; a step of determining an actual geometric envelope at least once during the implementation of the additive manufacturing step (100); and a step of triggering a corrective action if there is in a zone a discrepancy larger than a preset threshold between the target geometric envelope and the actual geometric envelope.
Claims16
A process for manufacturing an ophthalmic lens (10) having at least one optical function, which comprises:
- a step (100) of additively manufacturing said ophthalmic lens (10), by depositing a plurality of predetermined volume elements of at least one material having a predetermined refractive index, in accordance with a target geometric envelope (18);
- a step of determining an actual geometric envelope at least once during the implementation of said additive manufacturing step (100);
- and
- a step of triggering a corrective action if there is in a zone (P) a difference (Ecdif) larger than a predetermined threshold (S1, S2) between said target geometric envelope (18) and said actual geometric envelope.
Dependencies are inferred from the claim text.