Contact lenses with light blocking rings
US7364291B2 · kind B2 · utility
27Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Jun 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides contact lenses that substantially block either or both UV and blue light from entering the lens wearer's pupil by providing multiple concentric areas of certain materials that decrease or substantially eliminate the UV and blue light transmission. The lenses of the invention accomplish the light blocking without degrading the lens wearer's vision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.