LED light output linearization
US7586274B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2007 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Nov 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system and method for producing a flattened characteristic for LED luminous output. The system may include an array containing one or more light emitted diodes, a power source connected to the LED array providing drive current to the LED array, a timer connected to a controller wherein the timer logs the on-time of the LED array and communicates the LED array on-time to the controller, and a controller connected to the power source wherein the controller adjusts the intensity of the drive current provided to the LED array based on the on-time data received from the timer such that the resultant relative luminous output is approximately equal to the initial relative luminous output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.