Near field lens
US7837349B2 · kind B2 · utility
16Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2007 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | May 5, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lens has a main body for use with at least one light source. The main body has a light-emitting face, a light-collecting face disposed opposite the light-emitting face, and a plurality of focal points, the latter of which form a focal ring. A central axis extends through the light-collecting face and the light-emitting face. The main body is substantially radially symmetrical about the central axis and the focal ring extends around the central axis of the main body of the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.