Lens element
US11067832B2 · kind B2 · utility
2Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2020 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Dec 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens element intended to be worn in front of an eye of a person includes a prescription portion 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. The lens element further includes 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 to slow down the progression of the abnormal refraction of the eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.