EP 2178718 A1 20100428 - SYSTEM FOR GENERATING A LIGHT BEAM IN THE AREA IN FRONT OF A MOTOR VEHICLE
Title (en)
SYSTEM FOR GENERATING A LIGHT BEAM IN THE AREA IN FRONT OF A MOTOR VEHICLE
Title (de)
SYSTEM ZUM ERZEUGEN EINES LICHTBÜNDELS IM VORFELD EINES KRAFTFAHRZEUGES
Title (fr)
SYSTÈME POUR PRODUIRE UN FAISCEAU LUMINEUX EN AVANT D'UN VÉHICULE AUTOMOBILE
Publication
Application
Priority
- EP 2008060569 W 20080812
- DE 102007040042 A 20070824
Abstract (en)
[origin: WO2009027221A1] A system is described for generating a light beam in the area in front of a motor vehicle, which system has the following components - a headlight which comprises at least one LED array comprising a plurality of light emitting diodes (LEDs) which can be electrically actuated separately, - an object detection device for detecting objects in the area around the motor vehicle, and - a position determining device for determining the position of a detected object relative to the motor vehicle. In this context, the light beam which is generated by the LED array in conjunction with an optical imaging system can be characterized by at least one horizontal illumination intensity distribution value, in which the contributions of at least two LEDs to the illumination intensity distribution value overlap at least partially in terms of the horizontal angle, wherein the illumination intensity can be defined respectively for a) different positions in front of the motor vehicle and b) different horizontal angles relative to a reference direction. For a detected object, a horizontal angle range which is critical in terms of dazzle is then identified in each case as a function of the position of the object with respect to the motor vehicle and as a function of an assumed or identified object width, and the individual LEDs are driven, while taking into account the overlapping, in terms of horizontal angle, of their contributions to the illumination intensity distribution value, in such a way that an illumination intensity limiting value is not exceeded in the horizontal angle range which is critical in terms of dazzle and in terms of the position of the detected object.
IPC 8 full level
B60Q 1/08 (2006.01)
CPC (source: EP US)
B60Q 1/085 (2013.01 - EP US); F21S 41/143 (2017.12 - EP US); F21S 41/153 (2017.12 - EP US); F21S 41/663 (2017.12 - EP US); B60Q 2300/056 (2013.01 - EP US); B60Q 2300/41 (2013.01 - EP US); B60Q 2300/42 (2013.01 - EP US)
Citation (search report)
See references of WO 2009027221A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DE 102007040042 A1 20090226; DE 102007040042 B4 20190221; EP 2178718 A1 20100428; US 2011267455 A1 20111103; US 8723948 B2 20140513; WO 2009027221 A1 20090305
DOCDB simple family (application)
DE 102007040042 A 20070824; EP 08803008 A 20080812; EP 2008060569 W 20080812; US 67490408 A 20080812