Solid-state lighting apparatus and methods using energy storage
US9131561B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2011 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jul 12, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a current control circuit configured to selectively provide current responsive to a varying voltage to at least one LED coupled in series with the first current control circuit and to at least one capacitor coupled to the at least one LED and the first current control circuit. The current control circuit may be configured to cause the at least one capacitor to be selectively charged from a current source and to be discharged via the at least one LED responsive to a varying input, such as a varying current from the current source or a varying voltage applied to the current source. For example, the current control circuit may be configured to limit current through the at least one LED to less than a current provided by the current source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.