Optical lens with scratch-resistant anti-reflective layer
US9817155B2 · kind B2 · utility
6Cited by
2References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2015 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Feb 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an optical lens having a lens element produced of plastic, more particularly of plastic which is transparent in a visible spectral range, and having a coating comprising a plurality of layers, the plurality of layers comprising at least one high-refractive-index layer. Furthermore, a hardcoat layer is formed adjacent to the lens element, and a superhydrophobic layer concludes the coating in opposition to the lens element. The at least one high-refractive-index layer has a thickness of less than 40 nm, and the coating overall has a thickness of more than about 380 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.