Direction controllable lighting unit
US8319440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2008 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Apr 29, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/1965
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A direction controllable lighting unit (10) and use thereof in a lighting system (40) are described. A lighting unit (10) has means (16) for directing the light emission (22) into different directions. A plurality of light sources (20a, 20b) are mounted on a common body (14). The light sources (20a, 20b) are disposed to emit directed light into different directions. The light is modulated to contain identification codes ‘A’, ‘B’, which are unique. Within the lighting system (40), an optical sensor (46) is arranged in a region illuminated by the lighting unit (10). The optical sensor (46) demodulates the received light according to the identification code. A control unit (44) is connected to the optical sensor (46) and to the lighting unit (10) to control the direction of the lighting unit (10) based on information from the optical sensor (46).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.