Corrector device for automatically correcting the beam direction of vehicle headlamps to compensate for variations in vehicle trim
US4620267A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1985 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Dec 11, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/132
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The corrector device comprises at least one illumination sensor (10, a, b, c) integrated in a headlamp and fixed to move with the headlamp reflector (12), the sensor-reflector assembly normally pointing in such a direction as to detect the luminance of the road in at least one angular direction at a predetermined angle (o+.phi.+.theta.) with the horizontal (OY), with processing means being provided that are suitable for generating a corrector signal which is a function of the luminance of the road in said direction, whenever the trim of the vehicle changes, the device further including at least one actuator controlled by said corrector signal in order correct the direction in which the reflector-sensor assembly is pointing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.