Abstract: A light system including a first light source, a second light source, a first drive device configured to supply a first pulse-width modulation current for supplying power to the first light source, the first current including a first peak intensity and a first duty cycle, a second drive device configured to supply a second pulse-width modulation current for supplying power to the second light source with the second current comprising a second peak intensity and a second duty cycle, a control module generating a first control signal and a second control signal for the first control device and the second control device. The first peak intensity being lower than the second peak intensity, and the first duty cycle is higher than the second duty cycle.

Abstract: One aspect of the invention relates to a method for optimizing illumination in a junction region (202) between a plurality of vehicles (200-1, 200-2) emitting a light beam (201-1, 201-2), comprising ·Estimating a time interval in which each vehicle (200-1,A1 200-2) will be in the junction region (202); ·Estimating the illumination in the junction region (202) at any given time in the estimated time interval; ·If there is a region of overlap (2021) in which the estimated illumination corresponds to superposition of a plurality of light beams (201-1, 201-2): *Determining, via communication between the plurality of vehicles (200-1, 200-2) and on the basis of a set of parameters that are each relative to the consumption of one vehicle (200-1, 200-2), at least one action to be taken by a vehicle (200-1, 200-2) on its light beam (201-1, 201-2); *Taking each determined action in the junction region (202).

Abstract: A lighting device for projecting an image onto the ground around a motor vehicle. The lighting device includes a light source capable of producing a light beam, a first mask with a first pattern and a second pattern, the first mask being movable between a first position and a second position, a second mask with a third pattern and a fourth pattern, the second mask being movable between a first position and a second position, an actuator configured to move the first mask between its first position and its second position, and a drive means configured to optionally move the second mask between its first position and its second position at the same time as the first mask.

Abstract: This invention provides a method for detecting a failure in a solid-state light source of an automotive lighting device. This method provides an estimated temperature profile for the lighting device, measures an actual temperature profile of the lighting device and compares the estimated temperature profile with the actual temperature profile in order to detect a difference between them.

Abstract: A method for operating an automotive lighting device including at least one solid-state light source. The method includes defining a color allowance condition, feeding the light source with a current value which produces a luminous flux value higher than a minimum luminous flux threshold value, measuring the temperature in the light source, checking whether the output color satisfies the allowance condition and increasing or decreasing the current value, always keeping the current such as it produces an acceptable color. With the checking includes perform a pulse width modulation of the current value to keep an average value of the current which produces a luminous flux value higher than the minimum luminous flux threshold value. The invention also provides an automotive lighting device comprising a control element to carry out the steps of this method.

Abstract: An automotive lighting device and a method for operating an automotive lighting device including at least one solid-state light source. The method includes defining a color allowance condition, feeding the light source with a current value which produces a luminous flux value higher than a minimum luminous flux threshold value, measuring the temperature in the light source, checking whether the output color satisfies the allowance condition and increasing or decreasing the current value, always keeping the current such as it produces a luminous flux value higher than the minimum luminous flux threshold value and producing a color which satisfies the allowance condition.

Abstract: An automotive lighting device with a control element and a method for operating an automotive lighting device including at least two solid-state light modules. The method includes defining a homogeneity criterion for each pair of colors, feeding the first light module with a first current value which produces a first output color in the first light module and feeding the second light module with a second current value which produces a second output color in the second light module, with the first output color and second output color fulfilling the homogeneity criterion.

Abstract: This invention provides a method for operating an automotive lighting device comprising at least one solid-state light source. This method comprises the steps of providing a plurality of sensors, configured to provide some device data, provide a control unit configured to receive and process the device data, generate an estimated condition of the lighting device based on the device data and controlling an operation parameter of the automotive lighting device using the estimated condition. The invention also provides a data processing element and a computer program to carry out this method and an automotive lighting device comprising a control unit which carries out this method.

Abstract: A method for operating an automotive lighting device including at least one solid-state light source. The method includes defining a color allowance condition, feeding the light source with a current value which produces a luminous flux value higher than a minimum luminous flux threshold value, measuring the temperature in the light source, checking whether the output color satisfies the allowance condition and increasing or decreasing the current value, always keeping the current such as it produces an acceptable color. With the checking includes perform a pulse width modulation of the current value to keep an average value of the current which produces a luminous flux value higher than the minimum luminous flux threshold value. The invention also provides an automotive lighting device comprising a control element to carry out the steps of this method.

Abstract: The invention provides a method for operating an automotive lighting device including the providing a first preliminary current profile, calculating a first preliminary derating time associated to the first preliminary current profile, providing a second preliminary current profile, calculating a second preliminary derating time associated to the second preliminary current profile, feeding the first light module with a first current profile which provides a total amount of current lower than the first preliminary amount of current, and feeding the second light module with a second current profile which provides a total amount of current higher than the second preliminary amount of current.

Abstract: The invention provides an electronic assembly for an automotive lighting device. the electronic assembly comprising a plurality of converters (8, 9, 10, 11, 12), at least one driver channel (5, 6, 7) being electrically fed by at least one converter (8, 9, 10, 11, 12) and a plurality of solid-state light sources (2, 3, 4). at least one solid-state light source receiving current and control from each driver channel (5, 6, 7). At least one of the converters (8, 9, 10, 11, 12) is arranged for selectively being connected or disconnected to provide different current values to at least one of the driver channels (5, 6, 7).

Abstract: A method for operating an automotive lighting device including providing a first preliminary current profile, calculating a first preliminary derating time associated to the first preliminary current profile, providing a second preliminary current profile, calculating a second preliminary derating time associated to the second preliminary current profile, feeding the first light module with a first current profile which provides a total amount of current lower than the first preliminary amount of current, and feeding the second light module with a second current profile which provides a total amount of current higher than the second preliminary amount of current.

Abstract: This invention provides a method for operating an automotive arrangement with a lighting device and a vehicle sensor. This method comprises the steps of providing a plurality of auxiliary sensors, configured to provide some device data, provide a control unit configured to estimate a vehicle sensor temperature using the device data and controlling an operation parameter of the automotive lighting device using the estimated vehicle sensor tem-perature. The invention also provides a data processing element and a computer program to carry out this method and an automotive lighting device comprising a control unit which carries out this method.

Abstract: A method for operating an automotive lighting device including providing a first preliminary current profile, calculating a first preliminary derating time associated to the first preliminary current profile, providing a second preliminary current profile, calculating a second preliminary derating time associated to the second preliminary current profile, feeding the first light module with a first current profile which provides a total amount of current lower than the first preliminary amount of current, and feeding the second light module with a second current profile which provides a total amount of current higher than the second preliminary amount of current

Abstract: An automotive lighting device and a method for operating an automotive lighting device including at least one solid-state light source. The method includes defining a color allowance condition, feeding the light source with a current value which produces a luminous flux value higher than a minimum luminous flux threshold value, measuring the temperature in the light source, checking whether the output color satisfies the allowance condition and increasing or decreasing the current value, always keeping the current such as it produces a luminous flux value higher than the minimum luminous flux threshold value and producing a color which satisfies the allowance condition.

Abstract: The invention provides a method for operating an automotive lighting device (1) comprising at least two solid-state light modules (2). This method comprising the steps of defining a homogeneity criterion for each pair of colours, feeding the first light module with a first current value which produces a first output colour in the first light module and feeding the second light module with a second current value which produces a second output colour in the second light module, wherein the pair first output colour-second output colour fulfils the homogeneity criterion. The invention also provides an automotive lighting device (1) comprising a control element (3) to carry out the steps of this method.

Abstract: This invention provides a method for detecting a failure in a solid-state light source of an automotive lighting device. This method provides an estimated temperature profile for the lighting device, measures an actual temperature profile of the lighting device and compares the estimated temperature profile with the actual temperature profile in order to detect a difference between them.

Abstract: The invention provides a method for operating an automotive lighting device including the providing a first preliminary current profile, calculating a first preliminary derating time associated to the first preliminary current profile, providing a second preliminary current profile, calculating a second preliminary derating time associated to the second preliminary current profile, feeding the first light module with a first current profile which provides a total amount of current lower than the first preliminary amount of current, and feeding the second light module with a second current profile which provides a total amount of current higher than the second preliminary amount of current.

Abstract: This invention provides a method for operating an automotive arrangement with a lighting device and a vehicle sensor. This method comprises the steps of providing a plurality of auxiliary sensors, configured to provide some device data, provide a control unit configured to estimate a vehicle sensor temperature using the device data and controlling an operation parameter of the automotive lighting device using the estimated vehicle sensor tem-perature. The invention also provides a data processing element and a computer program to carry out this method and an automotive lighting device comprising a control unit which carries out this method.

Abstract: This invention provides a method for operating an automotive lighting device comprising at least one solid-state light source. This method comprises the steps of providing a plurality of sensors, configured to provide some device data, provide a control unit configured to receive and process the device data, generate an estimated condition of the lighting device based on the device data and controlling an operation parameter of the automotive lighting device using the estimated condition. The invention also provides a data processing element and a computer program to carry out this method and an automotive lighting device comprising a control unit which carries out this method.