Switching procedure of the motor vehicle headlight lighting mode
AssigneeValeo Vision
InventorsDavid Hue, Julien Moizard, Patrice Reilhac
Life of this patent
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Abstract
An automatic headlight switching procedure for motor vehicles, designed to emit a beam of light from one lighting mode to another lighting mode. The process features the steps of when the headlights are in a first lighting mode, detecting the backscatter of the headlight beam onto a phenomenon of visibility disturbance; increasing the lighting range of the headlight beam in relation to a maximum authorized range in accordance with the detected backscatter; and switching the headlights to a second lighting mode when the backscatter is below a first determined threshold.
Claims19
An automatic headlight switching process designed to emit a beam of light for motor vehicle from one lighting mode to another lighting mode, comprising the following steps:
- when the headlights are in a first lighting mode, detecting backscatter of the beam of light from the headlights onto a phenomenon of visibility disturbance;
- increasing the lighting range of the beam of light from the headlights in relation to a maximum authorized range in accordance with the detected backscatter during said one lighting mode in order improve a lighting of said phenomenon of visibility disturbance to enable the backscatter to be measured;
- measuring a visibility distance of said backscatter in response to said increase in said lighting range of the beam of light;
- switching the headlights from said one lighting mode to a second lighting mode (MOD_R) once the backscatter reaches a first determined threshold.
An automatic headlight switching device designed to emit a beam of light for motor vehicle from one lighting mode to another lighting mode, comprising:
- a unit of increase of a lighting range of a beam of light from the headlights in relation to a maximum authorized range (BM) in accordance with a detected backscatter during said one lighting mode in order to improve a lighting of a phenomenon of visibility disturbance to enable said detected backscatter to be measured;
- and
- a control unit in order to:
- measure a visibility distance of said detected backscatter in response to said increase in said lighting rage of the beam of light;
- and
- detect backscatter of the beam of light from the headlights onto a phenomenon of visibility disturbance, when the headlights are in a first lighting mode;
- and
- switch the headlights to a second lighting mode once the backscatter reaches a first determined threshold.
Dependencies are inferred from the claim text.