Light source device
US10980091B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2020 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | May 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light source device includes: a power supply circuit, having a first voltage terminal and a second voltage terminal; a light source circuit, having a common terminal and multiple branch terminals, the common terminal being electrically connected to the first voltage terminal, the light source circuit including multiple light sources for emitting lights of different colors, first terminals of the light sources being electrically connected to the common terminal, and second terminals of the light sources being electrically connected to the branch terminals respectively; and a light adjusting circuit, including multiple electrical paths and being electrically connected to the second voltage terminal and the branch terminals via the electrical paths so that the light sources are connected in parallel between the first and second voltage terminals. A resistance of at least one of the electrical paths is adjustable to set branch currents respectively flowing through the light sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.