Eyeglass with flip-up auxiliary lens assembly
US6820976B2 · kind B2 · utility
8Cited by
53References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2003 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Mar 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2200/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Eyeglasses comprise a pair of spectacles having primary lenses and an auxiliary lens assembly attached to the spectacles. The auxiliary lens assembly is secured by a pair of arms having magnets at one end that co-operate with magnets provided on the spectacles. A hinge is provided at the opposite end o f the arms that allow the auxiliary lens assembly to move from a position in which the primary lenses are covered to a position in which they are exposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.