Lens element
US10948744B1 · kind B1 · utility
2Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2020 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Dec 28, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens element worn in front of an eye of a person includes a refraction area having a first refractive power based on a prescription for correcting an abnormal refraction of the eye of the person and a second refractive power different from the first refractive power and a plurality of at least three optical elements, at least one optical element having an optical function of not focusing an image on the retina of the eye so as to slow down the progression of the abnormal refraction of the eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.