A lighting circuit which lights a semiconductor light source, the lighting circuit includes a drive circuit configured to receive a PWM signal from a controller, to generate a drive current to the semiconductor light source, and to switch the drive current according to the PWM signal. When a non-input state of the PWM signal exceeds a predetermined time, the lighting circuit is configured to assert an abnormality detection signal and to output the abnormality detection signal to the controller.

Techniques for drone device control are provided. In one example, the technique includes monitoring, by a drone device operatively coupled to a processor and allocated to a vehicle in operation, one or more conditions associated with the vehicle. The technique also includes, in response to identifying, by the drone device, a defined condition of the one or more conditions: moving, by the drone device, to a position relative to the vehicle and determined based on the defined condition; and performing, by the drone device, an indication operation determined based on the defined condition.

A circuit arrangement for operating a plurality of lighting devices having: a first control component, which is connected to a first lighting device or is formed integrally with a first lighting device; at least one second control component, which is connected to a second lighting device or is formed integrally with a second lighting device; at least one main control device, which is connected to the first and to the second control component and is configured to supply the control components with an operating voltage; and at least one data communications line, which is connected to the two control components and to the main control device. The main control device is is able to transmit a first position coding signal for the position coding of the first control component and at least one second position coding signal for the position coding of the second control component.

A tail light includes a housing with a translucent cover panel and one or more flexible light guides at least partly arranged in the housing. Each light guide contains one or more fibers which extend between two ends of the respective light guide in the longitudinal direction thereof. One or more laser light sources are provided at one end of each light guide, and the supplied light produces an emission of light out of the respective light guide along the longitudinal direction thereof. At least one part of the emitted light exits the tail light via the cover panel as a first light emission. An additional lighting device with one or more LEDs is at least partly arranged in the housing and is configured such that light originating from the LED(s) exits the tail light via the cover panel as a second light emission.

A combination of headlight assembly and an emergency light module consists of a light module and a lighting cavity having a reflector with a light emitting source. A headlight assembly comprises a reflecting portion and a lens member. The reflector is connected to the external area of the lens, so that the light source faces the headlight reflector, wherein the light generated by the light emitting source is directed through the lens into the interior of the headlight assembly and is reflected back from the reflector utilizing its reflective properties passing though the body of the lens illuminating area outside the motor vehicle, so that working condition of the vehicle headlight light is simulated.

A combination of headlight assembly and an emergency light module consists of a light module and a lighting cavity having a reflector with a light emitting source. A headlight assembly comprises a reflecting portion and a lens member. The reflector is connected to the external area of the lens, so that the light source faces the headlight reflector, wherein the light generated by the light emitting source is directed through the lens into the interior of the headlight assembly and is reflected back from the reflector utilizing its reflective properties passing though the body of the lens illuminating area outside the motor vehicle, so that working condition of the vehicle headlight light is simulated.

The lamp fitting for a vehicle includes a plurality of laser light sources, and laser light from the plurality of laser light sources is introduced into a plurality of optical systems, and is used in the plurality of optical systems. The lamp fitting for a vehicle includes: a plurality of laser light sources; one or more optical fibers; one or more optical systems which are provided in conformity with the one or more optical fibers and to which a corresponding emission end of the optical fiber among the one or more optical fibers is connected; and a plurality of optical elements which are disposed between the laser light sources and an incident end of the one or more optical fibers, and constitute an optical path guiding laser light from at least one of the laser light sources to the incident end of the one or more optical fibers.

A computer system comprising processing circuitry configured to handle a lighting system of a vehicle. The lighting system comprises at least two redundant component groups each comprising a respective plurality of light sources and each being powered by a respective separate power source. The processing circuitry is further configured to: obtain diagnosis data of the lighting system, which diagnosis data is indicative of a status of the at least two redundant component groups in comparison with a predeterminable safety model; and in response to the diagnosis data indicating a fault or risk of fault associated with at least a first of the at least two redundant component groups, reconfigure the lighting system to utilize at least a first of the at least two redundant component groups not associated with said fault or risk of fault.

A headlight control device comprising a first processor configured to provide an instruction to turn on and turn off the headlight, and a second processor configured to turn on or turn off the headlight based on the instruction. The first processor is configured to detect a vehicle state and output a lamp instruction signal and a vehicle state signal. The second processor is configured to diagnose the communication state with the first processor, configured to acquire the lamp instruction signal and the vehicle state signal, configured to execute control to turn on or off the headlight in accordance with the acquired lamp instruction signal, and configured to determine whether communication with the first processor is interrupted due to an abnormality based on the diagnosed communication state and acquired vehicle state signal.