Ophthalmic lens
US8292429B2 · kind B2 · utility
1Cited by
6References
17Claims
0Family size
Inventor
Key dates
| Filing date | Oct 30, 2007 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Jun 21, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/065
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A progressive ophthalmic lens includes at least one complex surface having a principal progression meridian. The complex surface has a horizontal reseau of bands and at least one geometrical quantity of the complex surface is substantially equal in all bands of the reseau for a given point of a vertical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.