Light emitting apparatus
US9416925B2 · kind B2 · utility
6Cited by
40References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Nov 18, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED-based luminaire is configured to direct light from an LED source downwardly. However, a portion of the luminaire intentionally reflects part of the light upwardly toward a ceiling of a structure. A control circuit of an LED-based luminaire enables the luminaire to be dimmed by an off-the-shelf dimmer. The control circuit also determines when a temperature of the LED-based luminaire exceeds a desired temperature range, and employs a feedback circuit to reduce power delivery to the LEDs until the temperature is again within the desired temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.