Shaped gradient lens
US8665525B2 · kind B2 · utility
0Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2012 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Dec 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/062
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
One embodiment provides for a gradient lens having a first substantially hemispherical member comprising a first convex surface and a base and a second substantially hemispherical member projecting away from the base of the first hemispherical member and comprising a second convex surface. The gradient lens also includes a plurality of gradient layers disposed within the first hemispherical member, each gradient layer concentrically aligned to the first hemispherical member and comprising an index of refraction different than that of adjacent gradient layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.