Films having grin elements for application to spectacles or other ophthalmic lenses
US12248201B2 · kind B2 · utility
0Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2022 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Oct 6, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A film for applying to an ophthalmic lens is described. The film, or the combination of the film and the ophthalmic lens are designed to prevent or slow the development or progression of myopia. The film has a base refractive index and includes at least one gradient index optical element. Ophthalmic lenses, such as spectacle lenses and contact lenses, that include the films are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.