A device for controlling the electrical power supply of a pixelated light source comprises a converter having a feedback control loop and a microcontroller element. The microcontroller element is arranged to act on the controlled value in a precise manner as a function of at least one parameter of the pixelated light source powered by the converter.

A vehicle headlamp control circuit is configured to control a vehicle headlamp comprising a plurality of lighting elements. The vehicle headlamp control circuit may comprise a memory that stores information for controlling the plurality of lighting elements, and a driver circuit that drives the plurality of lighting elements based on the information, wherein the information compensates for one or more failed elements of the plurality of lighting elements.

The present disclosure provides an LED straight light including a light tube with two pins at both ends, an LED installed in the light tube and a driving circuit. The driving circuit includes a mains branch and a signal branch. The mains branch is coupled to the pins at one end of the light tube for transmitting power to the LED for power supply. The signal branch is coupled to the pins at the other end of the light tube for transmitting external driving signals to control the on/off of the mains branch. The LED straight light of the present disclosure is powered by two ends, one of the two ends supplies power to the LED through the mains branch, and the other end receives driving signals to control the on/off of the mains branch.

An automotive lamp includes a first semiconductor light source and a second semiconductor light source configured to emit different colors, and to mix the two colors, so as to generate mixed-color light. A first driving circuit supplies a first driving current stabilized to a first target amount to the first semiconductor light source. A second driving circuit supplies a second driving current stabilized to a second target amount to the second semiconductor light source. Upon detecting an abnormal non-lighting state in the first semiconductor light source, the first abnormal state detection circuit stops the operation of the second driving circuit. Upon detecting an abnormal non-lighting state in the second semiconductor light source, the second abnormal state detection circuit stops the operation of the first driving circuit.

An automotive lamp includes a first semiconductor light source and a second semiconductor light source configured to emit different colors, and to mix the two colors, so as to generate mixed-color light. A first driving circuit supplies a first driving current stabilized to a first target amount to the first semiconductor light source. A second driving circuit supplies a second driving current stabilized to a second target amount to the second semiconductor light source. Upon detecting an abnormal non-lighting state in the first semiconductor light source, the first abnormal state detection circuit stops the operation of the second driving circuit. Upon detecting an abnormal non-lighting state in the second semiconductor light source, the second abnormal state detection circuit stops the operation of the first driving circuit.

A circuit arrangement for the electrical wiring of a light unit of a headlight for a vehicle, having a control unit which is connected to a power supply, the light unit having at least one semiconductor light source and a temperature measurer, wherein the semiconductor light source has a cathode and wherein the temperature measurer has a cathode, and wherein the light unit has an equipotential bonding contact. In the light unit, the cathodes are electrically connected to one another and/or at least one of the cathodes is electrically connected to the equipotential bonding contact in the light unit.

A circuit arrangement for the electrical wiring of a light unit of a headlight for a vehicle, having a control unit which is connected to a power supply, the light unit having at least one semiconductor light source and a temperature measurer, wherein the semiconductor light source has a cathode and wherein the temperature measurer has a cathode, and wherein the light unit has an equipotential bonding contact. In the light unit, the cathodes are electrically connected to one another and/or at least one of the cathodes is electrically connected to the equipotential bonding contact in the light unit.

A system includes a processor configured to determine an applicable pre-defined vehicle system state set, defining preferred vehicle system states when a driver is away from a vehicle. The processor is also configured to determine a driver exit-event while a vehicle state in the state set varies from a preferred setting and notify a driver mobile device of the variance, responsive to the exit event.

A headlamp system is provided for vehicles with an imaging unit and with an optical unit. The optical unit generates a light distribution that features a plurality of light patches. The light patches are each generated by mapping of at least one light pixel of the imaging unit. An actuator unit includes a corrective mechanism, by which, in event of presence of a defective light pixel that cannot be mapped by the optical unit on a light patch, at least one corrective light pixel is actuated, by means of which a light patch adjacent to the defective light patch not illuminated by the defective light pixel features a changed intensity progression in comparison to non-defective state. At least one flight patch adjacent to the defective light patch features an increased corrective intensity progression in comparison to the non-defective state.

A lighting circuit turns on multiple semiconductor light sources. Multiple current sources are each coupled in series with a corresponding one from among the semiconductor light sources. A switching converter supplies a driving voltage V.sub.OUT across each of multiple series connection circuits formed of the multiple semiconductor light sources and the multiple current sources. A converter controller controls a switching transistor of the switching converter based on a relation between a voltage across one from among the multiple current sources and a reference voltage having a positive correlation with the temperature T.sub.j.