Contact lens and product thereof
US11300812B2 · kind B2 · utility
1Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2020 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | May 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A contact lens includes a central region, an annular region and a peripheral region. The central region includes a central point of the contact lens. The annular region symmetrically surrounds the central region. The peripheral region symmetrically surrounds the annular region. The peripheral region includes at least one color pattern portion. The annular region includes at least one power of critical point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.