Polymer composition and methods using said polymer composition to manufacture ophthalmic lens
US11752713B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2020 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | May 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/022
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention proposes a polymer composition of manufacturing ophthalmic lens by polymerization of polymerizable composition wherein the shrinkage phenomenon is minimized. The polymerizable composition comprised two different categories of monomers which are able during crosslinking to control and limit said chemical shrinkage.The present invention comprises also ophthalmic lens obtained from said polymer composition using a manufacturing process of casting or additive manufacturing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.