Ophthalmic lens comprising an encapsulated light-absorbing additive
US11204445B2 · kind B2 · utility
2Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2017 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | Mar 14, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to an ophthalmic lens which efficiently absorbs light rays comprising a composition derived from a monomer or oligomer, a catalyst, at least one light-absorbing additive contained in nanoparticles which are dispersed in said monomer or oligomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.