Lighting device having status indication by modulated light
US9131550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2010 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Aug 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/196
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
It is presented a lighting device (2) arranged to embed light quality data in light emanating from the lighting device. The light quality data pertains to a status of the lighting device (2), e.g. with respect to its end of operational life. The light may be detected by a monitoring device (3) external to the lighting device (2). The monitoring device (3) can then help to determine the status of the lighting device (2), whereby maintenance operations of the lighting device (2) may be carried out.Maintenance personnel may thus replace lighting devices and/or light sources in need of maintenance as indicated by the status of each lighting device, before any lighting device in the system has reached an end of operational life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.