Device for regulating light width of headlights of motor vehicles
First Claim
1. A device for regulating a light width of at least one headlight of a motor vehicle, comprising an adjusting device associated with said headlight;
- a transmitter which emits electromagnetic radiation to irradiate a region of a roadway located in front of the motor vehicle;
an opto-electronic sensor which determines radiation emitted by said transmitter and reflected by the roadway and in dependence on the detected radiation produces signals;
an evaluating device which processes the produced signals and controls said adjusting device for maintaining constant a light width of a light beam emitted by said headlight, said transmitter in addition to the light beam of the headlight emitting radiation and following an adjustment of the light width of the light beam emitted by said headlight which is provided by said adjusting device, so that the region irradiated by the radiation emitted by said transmitter on the roadway has a small extension and, with a correctly adjusted light width of the light beam emitted by said headlights is arranged at a predetermined distance from the motor vehicle, said evaluating device determining from the signals of said sensor a deviation of an actual distance of said irradiated region in front of the motor vehicle and, when a deviation is detected, controls said adjusting device for adjusting to said predetermined distance.
1 Assignment
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Accused Products
Abstract
A device for regulating a light width of headlights of motor vehicles comprises an adjusting device associated with one of the headlights, a transmitter which emits electromagnetic radiation to illuminate a region of a roadway located in front of the motor vehicle, an opto-electronic sensor which determines radiation emitted by the transmitter and reflected by the roadway and in dependence on the detected radiation produces signals, an evaluating device which processes the produced signals and controls the adjusting device for maintaining constant a light width of a beam emitted by the headlights. The transmitter in addition to the light beam of the headlight emits radiation and follows an adjustment of the light width of the light beam emitted by the headlights which is provided by the adjusting device, so that the region irradiated by the radiation emitted by the transmitter on the roadway has a small extension and with a correctly adjusted light width of the light beam emitted by the headlights is arranged at a predetermined distance from the motor vehicle, the evaluating device determining from the signals of the sensor a deviation of an actual distance of the region in front of the motor vehicle and when a deviation is detected controls the adjusting device for adjusting the predetermined distance.
49 Citations
19 Claims
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1. A device for regulating a light width of at least one headlight of a motor vehicle, comprising an adjusting device associated with said headlight;
- a transmitter which emits electromagnetic radiation to irradiate a region of a roadway located in front of the motor vehicle;
an opto-electronic sensor which determines radiation emitted by said transmitter and reflected by the roadway and in dependence on the detected radiation produces signals;
an evaluating device which processes the produced signals and controls said adjusting device for maintaining constant a light width of a light beam emitted by said headlight, said transmitter in addition to the light beam of the headlight emitting radiation and following an adjustment of the light width of the light beam emitted by said headlight which is provided by said adjusting device, so that the region irradiated by the radiation emitted by said transmitter on the roadway has a small extension and, with a correctly adjusted light width of the light beam emitted by said headlights is arranged at a predetermined distance from the motor vehicle, said evaluating device determining from the signals of said sensor a deviation of an actual distance of said irradiated region in front of the motor vehicle and, when a deviation is detected, controls said adjusting device for adjusting to said predetermined distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- a transmitter which emits electromagnetic radiation to irradiate a region of a roadway located in front of the motor vehicle;
Specification