Spectacle lens comprising an activable optical filter
US11287674B2 · kind B2 · utility
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1References
17Claims
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Key dates
| Filing date | Feb 20, 2018 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Oct 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/153
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A spectacle lens including an activable optical filter, the activable optical filter being configured to be actively switched between at least three configurations, wherein in the first configuration, the color perception of the spectacle wearer is unaltered, in the second configuration the activable optical filter provides a specific filtering function, in the third configuration vision of the spectacle wearer is protected against glare.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.