Method for the automatic adaptation of a light beam of a headlight device
First Claim
1. A method for the automatic adaptation of a light beam of a headlight device of a first motor vehicle traveling on a road, the headlight device being able to perform a lighting function of the dipped beam type producing a light beam of the dipped type, and a lighting function of the motorway type producing a light beam of the motorway type, the lighting function of the dipped beam type being activated, wherein it comprises the steps of:
- detecting the presence of at least a second vehicle, being followed or passed in the opposite direction, not to be dazzled;
estimating an instantaneous distance separating the first vehicle from the second vehicle; and
determining whether the estimated instantaneous distance is greater than a first threshold value, referred to as the threshold value for activating the motorway lighting function;
where necessary, activating the motorway lighting function;
wherein the vehicle not to be dazzled is the vehicle closest to the first vehicle.
1 Assignment
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Accused Products
Abstract
A proposed method to illuminate optimally, or at least in an improved fashion compared with existing solutions, a road taken by a vehicle in question implementing the method whilst ensuring that other vehicles are not dazzled. To this end, it is not proposed in the invention to detect the distance between the vehicle in question and the first vehicle liable to be dazzled by the vehicle in question, and to generate accordingly a light beam optimized in terms of range on the road, and advantageously light intensity; according to the invention, the optimization of the light beam produced is achieved by the use of the motorway function available on the vehicle in question. The use of this function in this context also ensures a gradual transition between the function of the dipped type and the function of the main-beam type in the context of automatic switching operations between these functions.
18 Citations
26 Claims
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1. A method for the automatic adaptation of a light beam of a headlight device of a first motor vehicle traveling on a road, the headlight device being able to perform a lighting function of the dipped beam type producing a light beam of the dipped type, and a lighting function of the motorway type producing a light beam of the motorway type, the lighting function of the dipped beam type being activated, wherein it comprises the steps of:
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detecting the presence of at least a second vehicle, being followed or passed in the opposite direction, not to be dazzled; estimating an instantaneous distance separating the first vehicle from the second vehicle; and determining whether the estimated instantaneous distance is greater than a first threshold value, referred to as the threshold value for activating the motorway lighting function;
where necessary, activating the motorway lighting function;wherein the vehicle not to be dazzled is the vehicle closest to the first vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for the automatic adaptation of a light beam of a headlight device of a first motor vehicle traveling on a road, the headlight device being able to perform a lighting function of the dipped beam type producing a light beam of the dipped type, and a lighting function of the motorway type producing a light beam of the motorway type, the lighting function of the dipped beam type being activated, wherein it comprises the steps of:
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detecting the presence of at least a second vehicle, being followed or passed in the opposite direction, not to be dazzled; estimating an instantaneous distance separating the first vehicle from the second vehicle; and determining whether the estimated instantaneous distance is greater than a first threshold value, referred to as the threshold value for activating the motorway lighting function;
where necessary, activating the motorway lighting function;wherein the step of activating the lighting function of the motorway type comprises in particular a third operation of shifting upwards a complementary light beam produced during the activation of the lighting function of the motorway type.
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13. A method for the automatic adaptation of a light beam of a headlight device of a first motor vehicle traveling on a road, the headlight device being able to perform a lighting function of the dipped beam type producing a light beam of the dipped type, and a lighting function of the motorway type producing a light beam of the motorway type, the lighting function of the dipped beam type being activated, wherein it comprises the steps of:
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detecting the presence of at least a second vehicle, being followed or passed in the opposite direction, not to be dazzled; estimating an instantaneous distance separating the first vehicle from the second vehicle; and determining whether the estimated instantaneous distance is greater than a first threshold value, referred to as the threshold value for activating the motorway lighting function;
where necessary, activating the motorway lighting function;wherein the step of activating the lighting function of the motorway type comprises in particular a first operation of modulating a supplementary light power added to a light power available for performing the lighting function of the dipped beam type. - View Dependent Claims (14, 15)
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16. A method for the automatic adaptation of a light beam of a headlight device of a first motor vehicle traveling on a road, the headlight device being able to perform a lighting function of the dipped beam type producing a light beam of the dipped type, and a lighting function of the motorway type producing a light beam of the motorway type, the lighting function of the dipped beam type being activated, wherein it comprises the steps of:
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detecting the presence of at least a second vehicle, being followed or passed in the opposite direction, not to be dazzled; estimating an instantaneous distance separating the first vehicle from the second vehicle; and determining whether the estimated instantaneous distance is greater than a first threshold value, referred to as the threshold value for activating the motorway lighting function;
where necessary, activating the motorway lighting function;wherein the step of activating the lighting function of the motorway type comprises in particular a second operation of shifting, towards the optical axis of the headlight device observed when it produces solely the beam of the motorway type, an axis of maximum intensity of the light beam of the motorway type.
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17. A method for the automatic adaptation of a light beam of a headlight device of a first motor vehicle traveling on a road, the headlight device being able to perform a lighting function of the dipped beam type producing a light beam of the dipped type, and a lighting function of the motorway type producing a light beam of the motorway type, the lighting function of the dipped beam type being activated, wherein it comprises the steps of:
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detecting the presence of at least a second vehicle, being followed or passed in the opposite direction, not to be dazzled; estimating an instantaneous distance separating the first vehicle from the second vehicle; and determining whether the estimated instantaneous distance is greater than a first threshold value, referred to as the threshold value for activating the motorway lighting function;
where necessary, activating the motorway lighting function;wherein said first threshold value depends on the character, passed or followed, of the second vehicle.
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18. A method for the automatic adaptation of a light beam of a headlight device of a first motor vehicle traveling on a road, the headlight device being able to perform a lighting function of the dipped beam type producing a light beam of the dipped type, and a lighting function of the motorway type producing a light beam of the motorway type, the lighting function of the dipped beam type being activated, wherein it comprises the steps of:
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detecting the presence of at least a second vehicle, being followed or passed in the opposite direction, not to be dazzled; estimating an instantaneous distance separating the first vehicle from the second vehicle; and determining whether the estimated instantaneous distance is greater than a first threshold value, referred to as the threshold value for activating the motorway lighting function;
where necessary, activating the motorway lighting function;wherein said method further comprises the steps of; determining the nature of the vehicle not to be dazzled by establishing whether the vehicle not to be dazzled is a vehicle being passed in the opposite direction or a vehicle being followed; adapting the first threshold value and/or the second threshold value according to the determination of the nature of the vehicle.
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19. An automatic adaptation of a light beam system for automatically adapting a headlight device of a first motor vehicle traveling on a road, the headlight device being able to perform a lighting function of the dipped beam type producing a light beam of the dipped type, and a lighting function of the motorway type producing a light beam of the motorway type, the lighting function of the dipped beam type being activated, wherein said system comprises:
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vehicle detecting means for detecting the presence of at least a second vehicle, being followed or passed in the opposite direction, not to be dazzled; estimating means for estimating an instantaneous distance separating the first vehicle from the second vehicle; and determining means for determining whether the estimated instantaneous distance is greater than a first threshold value, referred to as the threshold value for activating the motorway lighting function;
where necessary, activating the motorway lighting function;wherein the vehicle not to be dazzled is the vehicle closest to the first vehicle. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification