Multiple layer multifocal composite lens
US7744215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2008 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jan 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Aspects of the present invention provide multiple-layer composite lenses comprising two or more materials and methods for making the same. A multi-layer composite lens of the present invention can use multiple surfaces to form optical elements that can contribute to a total desired add power. The multiple contributing elements can be aligned so as to be in optical communication to form multiple stable vision zones to enhance optical performance and vision experience of the wearer. Distributing the total desired add power across multiple appropriately aligned optical elements that are in optical communication with one another can reduce the total distortion of the lens, minimize the number of optical discontinuities introduced and reduce the visibility of any introduced optical discontinuity. A surface of the multiple-layer composite lens can comprise a combined progressive structure and substantially constant optical power structure or a cropped progressive structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.