Lighting unit and vehicle headlamp
US9631785B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2009 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Dec 24, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/151
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting unit (1) is provided with a reflecting surface (2, 2′, 2″) for providing an output beam of light with at least two beam patterns. A first light source (5) and a second light source (7) are arranged to illuminate substantially identical surface areas of said reflecting surface (2, 2′, 2″) and are independently controllable from each other. The reflecting surface (2, 2′, 2″) is shaped and said light sources (5, 7) are positioned relative to said reflecting surface (2, 2′, 2″) so that said first light source (5) generates an output beam of light, having a first beam pattern and said at least second light source (7) generates an output beam of light, having a second beam pattern, different from said first beam pattern. A corresponding vehicle headlamp (10) comprises at least one lighting unit (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.