Filter for eye cone cells protection
US12248202B2 · kind B2 · utility
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14Claims
0Family size
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Key dates
| Filing date | Mar 13, 2020 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Jan 9, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to filter dedicated to protect eye cone cells and method associated. The eye cone cells protecting filter is intended to be applied to a transparent surface and to filter incident light for preventing eye cone cells of a user, from damages due to illumination at physiological light levels on the eye of said user, and having spectral characteristics to i) filter light wavelengths between 405 and 465 nanometers, and ii) transmit a filtered light reaching the eye cone cells and having a harmfulness on said eye cone cells under a predefined maximum threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.