Lighting apparatus
US9967943B1 · kind B1 · utility
16Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2017 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Mar 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8513
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting apparatus comprises the following elements. A first set of light emitting diode module includes a variety of light emitting diode elements, wherein different types of light emitting diode elements have different color temperature characteristics. A driving circuit supplies power to the first set of light emitting diode module, such that the plurality of light emitting diode elements emit light. Moreover, the driving circuit may supply currents with different total values, and the optical characteristics of the first set of light emitting diode module change accordingly, so as to change color temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.