Dual-function lamp device for a motor vehicle
US6976772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2003 |
| Grant date | Dec 20, 2005 |
| Priority date | — |
| Expiry date | Sep 10, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/683
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The object of the invention is a dual-function lamp device for a motor vehicle, comprising in particular a light source emitting light signals towards an output surface of the lamp in order to produce a light beam, and a filtering means which can move between a passive position and an active position in which it allows passage of only some of the light signals corresponding to non-visible wavelengths, the filtering means being used in association with an intermediate lens for modifying the dispersion of the light beam. The driver thus has a direct illumination and an indirect illumination for obtaining, from a single lamp, two different fields of vision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.