Solid-state lighting apparatus and methods using energy storage
US8791641B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2012 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | Aug 27, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Some embodiments provide a lighting apparatus including a plurality of lighting circuits coupled in series. Each lighting circuit includes a control circuit configured to selectively provide current to at least one LED and at least one charge storage device coupled to the at least one LED. The control circuit may be configured to cause the at least one charge storage device to be selectively charged from a current source and to be discharged via the at least one LED responsive to a varying input. For example, the control circuit may be configured to limit current through the at least one LED to thereby divert current to the at least one charge storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.