Low-profile illumination device
US8328406B2 · kind B2 · utility
36Cited by
157References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 2010 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Jan 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination system in accordance with an embodiment hereof includes a first substantially flat waveguide for propagating and emitting light. The first waveguide may include a plurality of optical elements increasing in density from an edge to the center of the first waveguide. Light enters the first waveguide at the edge, and light is emitted from the top surface of the first waveguide. The intensity of the emitted light is substantially uniform over the top surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.