Tinted polarized lenses having selective frequency filtering
US10642071B2 · kind B2 · utility
0Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2018 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Nov 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Tinted lenses for attenuating ambient light, reducing glare, and improving color discrimination for a user are disclosed. In some embodiments, the lens has uniform transmittance across the visible spectrum with selective filtering of light at 480 nm and 580 nm. In some embodiments, the lens may reduce light in the blue region of the spectrum while maintaining color discrimination. In some embodiments, the level of attenuation provided by the lens may vary based on the intensity of light present while maintaining selective filtering at 480 nm and 580 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.