Single microstructure lens, systems and methods
US8926092B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 2013 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Apr 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods for providing enhanced image quality across a wide and extended range of foci encompass vision treatment techniques and ophthalmic lenses such as contact lenses and intraocular lenses (IOLs). Exemplary IOL optics can include a circular surface structure which acts as a diffractive or phase shifting profile. In some cases, a single ring IOL includes an anterior face and a posterior face, where a profile can be imposed on the anterior or posterior surface or face. The profile can have an inner portion such as a microstructure or central echelette, and an outer portion. Between the inner portion and the outer portion, there may be a transition zone that connects the inner and outer portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.