Process for manufacturing a series of ophthalmic lenses and sheet of film used in such a process
US7938536B2 · kind B2 · utility
4Cited by
4References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2007 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Nov 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to a process for manufacturing a series of ophthalmic lenses, each lens consists of a substrate and a film portion (3) attached to the substrate. The characteristics specific to each lens are obtained by functionalizing the film portion. Film functionalization is carried out when the film is in the form of a large planar sheet (2), and then each portion is cut from the sheet. To obtain economic lens manufacture, with a good production yield, the film portions have, right from the start of the process, dimensions corresponding substantially to the housing of a frame into which each lens is intended to be fitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.