Vehicle headlamp
US6821005B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Oct 29, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/435
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a headlamp comprising low beam irradiating, there are provided main beam irradiating means, light distribution switching means for switching a low beam and a main beam, abnormality detecting means for detecting an abnormal situation in which a proper low beam cannot be formed, and optical axis tilting means for vertically tilting an optical axis of at least a main beam, and the abnormality detecting means detects an abnormality, a light distribution is switched into a main beam by the light distribution switching and the optical axis of the main beam is turned downward by the optical axis tilting means. When a proper low beam cannot be formed, a main beam having a larger light amount is generally turned on to maintain a visibility in of a vehicle and the optical axis of the main beam is turned downward such that glare light is not generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.