Aspheric lenses and lens family
US7905917B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2005 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Apr 17, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0053
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In an embodiment, an aspheric IOL for use in a pseudophakic ocular system has no inherent spherical aberration. An embodiment of the invention is directed to a family of aspheric IOLs in which a lens constant, such as the well known A-constant, is kept constant throughout the family of lenses. An embodiment of the invention is directed to a multi-component accommodating intraocular lens (A-IOL) having substantially no inherent spherical aberration. An embodiment of the invention is directed to a family of member A-IOLs where each member A-IOL has a first (1) surface and a fourth (4) surface characterized by a radius and a conic constant that remain substantially constant over the power rage of the A-IOL family.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.