Light emitting device
US7474287B2 · kind B2 · utility
0Cited by
14References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2005 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Oct 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting device includes a time delay mechanism in electrical connection with a power source for time shifting at least a portion of a power signal outputted by the power source and a plurality of light emitting units formed by at least a light emitting diode (LED)structure, each light emitting unit being driven alternately and sequentially using the power source and the time delay mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.