System and method providing LED emulation of incandescent bulb brightness and color response to varying power input and dimmer circuit therefor
US8890419B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2010 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Dec 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting system is disclosed, including a first lighting module and a second lighting module connected parallel to the first lighting module. The first lighting module, with a first activation voltage, generates light at a first color temperature and the second lighting module, with a second activation voltage, generates light at a second color temperature. The two lighting modules generate light when current flows through them. When input voltage is changed, both the amount of current flowing through the two modules changes and the ratio of current flowing through the two lighting modules changes. The change in ratio changes the color temperature of the light produced by the lighting system resulting from combination of the light produced by the two modules. The combined output brightness and color temperature each change with applied power in such a way to emulate the lighting profile of an incandescent lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.