Apparatus and method for controlling light distribution of headlamp
US5660454A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1993 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Aug 27, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/334
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus for controlling the light distribution of a headlamp includes a vehicle speed sensor; a calculating device for estimating a position to be reached by the vehicle after a predetermined time along a forward roadway of the vehicle on the basis of a vehicle speed and information representing a route of the forward roadway, and for calculating a direction of illumination or a range of illumination by the headlamp so that light is illuminated onto an estimated position; and a control device for controlling the direction of illumination or the range of illumination by the headlamp on the basis of a result of calculation by the calculating device. The light is illuminated onto a position, which is located ahead of the vehicle and which is viewed by a driver, for obtaining an optimum light distribution for a field of view of the driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.