Lighting apparatus
US10772175B1 · kind B1 · utility
2Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2019 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Aug 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting apparatus, includes a first light source, a second light source, a current source, a PWM circuit and a switch circuit. The first light source and the second light source emit lights of different color temperatures. A current source is for generating a driving current. The PWM circuit is used for generating a PWM signal. The switch circuit is for guiding the driving current to either the first light source or the second light source by reference to the PWM signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.