Headlamp control to prevent glare
First Claim
1. A system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
- an array of sensors capable of detecting light levels in front of the controlled vehicle; and
a control unit in communication with the array of sensors and the at least one exterior vehicle light, the control unit determining a distance and an angle from the at least one exterior vehicle light of the controlled vehicle to a leading vehicle, wherein the control unit is operable to control operation of the at least one exterior vehicle light as a function of the distance and angle based on output from the array of sensors and prevent the at least one exterior vehicle light from providing a disruptive glare to a driver of the leading vehicle.
1 Assignment
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Accused Products
Abstract
A system for controlling at least one exterior vehicle light of a controlled vehicle includes an array of sensors and a control unit. The array of sensors are capable of detecting light levels in front of the controlled vehicle. The control unit is in communication with the array of sensors and the at least one exterior vehicle light and determines a distance and an angle from the at least one exterior vehicle light of the controlled vehicle to a leading vehicle. The control unit is operable to control operation of the at least one exterior vehicle light as a function of the distance and angle, based on the output from the array of sensors, and prevent the at least one exterior vehicle light from providing a disruptive glare to a driver of the leading vehicle.
163 Citations
64 Claims
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1. A system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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an array of sensors capable of detecting light levels in front of the controlled vehicle; and
a control unit in communication with the array of sensors and the at least one exterior vehicle light, the control unit determining a distance and an angle from the at least one exterior vehicle light of the controlled vehicle to a leading vehicle, wherein the control unit is operable to control operation of the at least one exterior vehicle light as a function of the distance and angle based on output from the array of sensors and prevent the at least one exterior vehicle light from providing a disruptive glare to a driver of the leading vehicle. - View Dependent Claims (2, 3, 4, 5)
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6. An illumination control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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an array of sensors for generating electrical signals; and
a control unit in communication with the at least one exterior vehicle light and operable to acquire and process electrical signals received from the array of sensors to determine an illumination gradient associated with the at least one exterior vehicle light on a road surface, the control unit comparing a sensed illumination range, which is based on the illumination gradient, to a desired illumination range and being operable to control the at least one exterior vehicle light to achieve the desired illumination range. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An illumination control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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a discrete light sensor for generating electrical signals; and
a control unit in communication with the at least one exterior vehicle light and operable to acquire and process electrical signals received from the discrete light sensor to determine when the at least one exterior vehicle light should transition to a town lighting mode, wherein the discrete light sensor provides an indication of an AC component present in ambient light, and wherein the control unit causes the at least one exterior vehicle light to transition to the town lighting mode when the AC component exceeds a predetermined AC component threshold. - View Dependent Claims (13, 14)
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15. An illumination control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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an imaging system for obtaining an image to a front of the controlled vehicle, the imaging system including an array of sensors each generating electrical signals representing a light level sensed by the sensor; and
a control unit in communication with the at least one exterior vehicle light and operable to acquire electrical signals received from the array of sensors and to separately process the electrical signals, wherein the control unit is operable to examine a position and brightness of an on-coming vehicle headlamp over time, as indicated by the electrical signals provided by the array of sensors to determine when a median width is appropriate for the activation of a motorway lighting mode, and wherein the control unit causes the at least one vehicle light to transition to the motorway lighting mode responsive to the determined median width. - View Dependent Claims (16)
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17. An illumination control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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an imaging system for obtaining an image to a front of the controlled vehicle, the imaging system including an array of sensors each generating electrical signals representing a light level sensed by the sensor;
a spatially controlled variable attenuating filter positioned approximate the at least one exterior vehicle light; and
a control unit in communication with the at least one exterior vehicle light and the attenuating filter, wherein the control unit is operable to acquire electrical signals received from the array of sensors and to process the electrical signals and control the attenuating filter to vary an illumination range of the at least one exterior vehicle light in response to the electrical signals, and wherein the control unit is operable to control the attenuating filter to distinguish between vehicular and non-vehicular light sources. - View Dependent Claims (18, 19, 20)
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21. An illumination control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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an imaging system for obtaining an image to a front of the controlled vehicle, the imaging system including an array of sensors each generating electrical signals representing a light level sensed by the sensor;
a spatially controlled reflector positioned approximate the at least one exterior vehicle light; and
a control unit in communication with the at least one exterior vehicle light and the reflector, wherein the control unit is operable to acquire electrical signals received from the array of sensors and to process the electrical signals and control the reflector to vary an illumination range of the at least one exterior vehicle light in response to the electrical signals, and wherein the control unit is operable to control the reflector to distinguish between vehicular and non-vehicular light sources. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A system for controlling at least one headlamp of a controlled vehicle, the system comprising:
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an array of sensors capable of detecting light levels in front of the controlled vehicle; and
a control unit in communication with the array of sensors and the at least one headlamp, the headlamp having a high color temperature and the control unit receiving data representing the light levels detected by the array of sensors to identify potential light sources, the control unit distinguishing light that is emitted from the headlamp and reflected by an object from other potential light sources, wherein the control unit is operable to control operation of the at least one headlamp as a function of the light levels output from the array of sensors. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. A system for controlling at least one headlamp of a controlled vehicle, the system comprising:
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an array of sensors capable of detecting light levels in front of the controlled vehicle; and
a control unit in communication with the array of sensors and the at least one headlamp, the control unit determining a distance and an angle from the at least one headlamp of the controlled vehicle to a leading vehicle, wherein the control unit is operable to continuously control the illumination provided by the at least one headlamp as a function of the distance and angle based on output from the array of sensors, and wherein the at least one headlamp provides the illumination at more than two distinct beam patterns. - View Dependent Claims (37)
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38. A controllable headlamp, comprising:
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at least one light source; and
a spatially controlled variable attenuating filter positioned approximate the at least one light source, wherein the attenuating filter is controlled to provide a variable illumination range for the at least one light source, and wherein the attenuating filter is controlled to distinguish between vehicular and non-vehicular light sources. - View Dependent Claims (39, 40, 41)
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42. A controllable headlamp, comprising:
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at least one light source; and
a spatially controlled reflector positioned approximate the at least one light source, wherein the reflector is controlled to provide a variable illumination range for the at least one light source, and wherein the reflector is controlled to distinguish between vehicular and non-vehicular light sources. - View Dependent Claims (43, 44, 45, 46)
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47. A controllable headlamp, comprising:
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at least one light source; and
a rotatable mask positioned approximate the at least one light source, wherein a control unit that is in communication with the at least one light source and the rotatable mask is operable to acquire electrical signals which correspond to light levels sensed by an array of sensors and to process the electrical signals and control the rotatable mask to vary an illumination range of the at least one light source in response to the electrical signals. - View Dependent Claims (48, 49)
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50. A control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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a processor; and
a memory subsystem for storing processor executable code coupled to the processor, the processor executable code when executed causing the processor to perform the steps of;
determining a distance and an angle from the at least one exterior vehicle light of the controlled vehicle to a leading vehicle based on output from an array of sensors; and
controlling the operation of the at least one exterior vehicle light as a function of the distance and angle to prevent the at least one exterior vehicle light from providing a disruptive glare to a driver of the leading vehicle. - View Dependent Claims (51, 52)
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53. A control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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a processor; and
a memory subsystem for storing processor executable code coupled to the processor, the processor executable code when executed causing the processor to perform the steps of;
determining an illumination gradient associated with the at least one exterior vehicle light on a road surface based on output from an array of sensors;
comparing a sensed illumination range, which is based on the illumination gradient, to a desired illumination range; and
controlling the at least one exterior vehicle light to achieve the desired illumination range. - View Dependent Claims (54, 55, 56)
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57. A control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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a processor; and
a memory subsystem for storing processor executable code coupled to the processor, the processor executable code when executed causing the processor to perform the steps of;
examining a position and brightness of an on-coming vehicle headlamp over time, as indicated by electrical signals provided by an array of sensors, to determine when a median width is appropriate for the activation of a motorway lighting; and
causing the at least one vehicle light to transition to the motorway lighting mode responsive to the determined median width.
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58. A control system for controlling at least one exterior vehicle light of a controlled vehicle, the system comprising:
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a processor; and
a memory subsystem for storing processor executable code coupled to the processor, the processor executable code when executed causing the processor to perform the steps of;
receiving electrical signals from an array of sensors;
controlling a spatial light modulator (SLM) to vary an illumination pattern of the at least one exterior vehicle light in response to the received electrical signals; and
controlling the SLM to distinguish between vehicular and non-vehicular light sources. - View Dependent Claims (59)
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60. A method for controlling the forward lighting of a motor vehicle, comprising the steps of:
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receiving a vehicular input that includes at least one of a vehicle speed, a vehicle turn rate, a vehicle wheel angle, a vehicle compass direction, a vehicle pitch and an ambient light level;
determining a desired beam pattern based upon the vehicular input;
receiving an image of a forward field of view of the motor vehicle from an image sensor;
analyzing the received image; and
modifying the desired beam pattern based upon the analyzed image, wherein more than two distinct beam patterns can be provided. - View Dependent Claims (61, 62, 63, 64)
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Specification