Lens with surface correction
US6364481B1 · kind B1 · utility
36Cited by
13References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1999 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/022
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An optical lens element adapted for mounting in a frame of the wrap-around type, the lens element including a front and back surface capable of providing an optical zone (OZ), and a peripheral temporal zone (HT) which includes a surface correction to improve the overall field of vision of the wearer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.