Headlamp for vehicles having at least one laser light source
US10408403B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2015 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Oct 3, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A headlamp for vehicles, in which the laser beam of at least one laser light source (1) is directed via a beam deflection means (7) towards at least one light conversion means (8) in a scanning manner, which at least one light conversion means comprises a phosphor for converting light, and having a projection system (10) for projecting the light image (9) generated at the light conversion means onto the roadway (11), characterized in that at least one electro-optical modulator (4) is arranged in the beam path of the at least one laser light source (1), which at least one electro-optical modulator is controlled by a control unit (12) and lies before the light conversion means (8) in the beam path and affects the polarization of the light, wherein a polarization element (3, 5, 17) is arranged at least after the modulator in the beam path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.