Solid state lighting apparatus including separately driven LED strings and methods of operating the same
US9474111B2 · kind B2 · utility
7Cited by
0References
26Claims
0Family size
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Key dates
| Filing date | Feb 6, 2013 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Sep 22, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/385
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid state lighting apparatus can include a first string of Light Emitting Diodes (LEDs) that is configured to operate in response to a rectified ac voltage having a cycle including a null time interval when the first string is off and a second string of LEDs, that is separate from the first string of LEDs, and can be configured to emit light during at least a portion of the null time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.