Method of marking ophhalmic lens by using laser radiation of femtosecond pulse width
US6857744B2 · kind B2 · utility
32Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2003 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Aug 11, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/267
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of marking an ophthalmic lens, including a step of irradiating the ophthalmic lens formed of a resin material with a laser radiation of a femtosecond pulse width, such that the laser radiation is condensed at each of at least one predetermined spot within the ophthalmic lens, to form a whitened portion at the each of the at least one predetermined spot, for thereby providing the ophthalmic lens with a marking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.