Wide field spherical lenses and protective eyewear
US6682193B1 · kind B1 · utility
14Cited by
116References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2000 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Oct 30, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0016
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to novel ophthalmic lens elements and eyewear having wide field of view, low distortion, improved astigmatism correction where required and enhanced eye protection properties. Series of lens elements have steeply curved spherical reference surfaces. The edged lenses of the series have approximately consistent aperture size, shape and hollow depth across a range of common prescriptions. Novel sunglasses, laser protective eyewear, and lens edgings, coatings and frames are included in the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.