Vehicle headlamp including control to reduce illuminance of additional light distribution pattern and method of controlling the same
US8157427B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Jul 17, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/42
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle headlamp is provided. The vehicle headlamp includes a light source which is configured to form an additional light distribution pattern which is formed above a cut-off line of a low-beam mode light distribution pattern; a vehicle detection device which is configured to detect a presence of a front running vehicle; a road position detection device which is configured to detect an existing area of a road ahead; and a control unit. The control unit acquires information from the vehicle detection device and the road position detection device and, when the existing area includes a non-detectable area which is outside of a detectable area of the vehicle detection device, controls the light source to reduce an illuminance of the additional light distribution pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.