Adhesive optical film to convert an eyeglass lens to a progressive lens
US9995948B2 · kind B2 · utility
5Cited by
12References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | May 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus and methods are described, including a corrective optical film for converting a corrective single-focal lens to a multi-focal lens and/or a progressive lens. A thickness and/or a curvature of the corrective optical film is different in different regions of the corrective optical film, such that the corrective optical film is configured, upon being adhered to the single-focal lens, to change a focal length of the single-focal lens differently in different regions of the single-focal lens. Other applications are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.