Recalibration of a tunable lamp system
US9648696B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2016 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Apr 25, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/608
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Some embodiments include a method of operating a tunable light module. The method can include driving a lamp in the tunable light module, having lamps of at least two colors, to produce a colored light according to the color mixing plan that corresponds to a correlated color temperature (CCT); measuring a light characteristic of the lamp using a light sensor; detecting a degradation level by comparing the measured light characteristic against an expected light characteristic; and adjusting a current level for driving the lamp at the CCT by referencing the color mixing plan and an alternative coefficient corresponding to the degradation level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.