Blue light blocking eyewear and method of use
US11579469B2 · kind B2 · utility
0Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Dec 13, 2019 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Aug 8, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/108
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An eyewear includes an eyewear frame; and two lenses held in place via the eyewear frame, each of the two lenses having a top portion composed of a clear polycarbonate; and a bottom portion integral with the top portion and composed of an orange polycarbonate; the bottom portion absorbs blue light and the top portion allows all light through.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.