Optical device with desensitized rotational angular alignment for astigmatism correction
US11112621B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2019 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Jun 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ophthalmic lens comprises a main body having a toric surface and a spherical surface opposite the toric surface, the main body comprising an eyelid stabilization design structure having a thickness of less than 200 μm, wherein the spherical surface is configured to exhibit a lens spherical power, wherein the toric surface is configured to exhibit a lens cylindrical power that does not fully correct ocular cylindrical power due to astigmatism; and wherein the lens spherical power is configured such that the minimum circle of the ophthalmic lens is on or adjacent the retina of the eye of the wearer at a target angle of alignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.