Command/control unit and computer program for producing an ophthalmic lens comprising a step of laser marking in order to produce permanent etchings on one surface of said ophthalmic lens
US11305382B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Apr 27, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for producing an ophthalmic lens includes a step of laser marking in order to produce permanent etchings on one surface of the lens, at least one predefined step subsequent to the marking step and implementing extreme thermal stress that is applied to the surface, and a step of determining an operating point (PF) of a laser marking machine (1) configured to implement the marking step from geometric characteristics (Di) of the etchings to be made, the determining step including the steps of determining (304) a value (CPM) representative of the deformation of the lens on at least one treatment area of the surface, from the stress and data relative to a predetermined material from which the lens is formed, and of deducing (308) the operating point from the value representative of deformation and from the geometric characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.