Ophthalmic lens having morphed sinusoidal phase shift structures
US10871659B2 · kind B2 · utility
4Cited by
8References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 24, 2018 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Jan 6, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/1654
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ophthalmic lens includes an optic comprising an anterior surface, a posterior surface, and an optical axis. At least one of the anterior surface and the posterior surface has a surface profile including a base curvature and a plurality of morphed sinusoidal phase shift structures. The base curvature may correspond to a base optical power of the ophthalmic lens, and the morphed sinusoidal phase shift structures may be configured to extend depth of focus of the ophthalmic lens at intermediate or near viewing distances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.