This LED driving device comprises: a DC/DC controller which controls an output stage for supplying an output voltage to an LED; and a current driver which generates an output current of the LED, wherein the current driver performs PWM dimming by turning on the output current in accordance with an LED-current-on period of a PWM dimming signal and turning off the output current in accordance with an LED-current-off period of the PWM dimming signal, and the DC/DC controller includes a feedback control unit which performs feedback control for outputting a switching pulse to the output stage so as to make a cathode voltage of the LED equal to a reference voltage, and a pulse addition control unit which performs pulse addition control for adding a predetermined pulse number of additional switching pulses at a time of switching between the LED-current-on period and the LED-current-off period.

This LED driving device comprises: a DC/DC controller which controls an output stage for supplying an output voltage to an LED; and a current driver which generates an output current of the LED, wherein the current driver performs PWM dimming by turning on the output current in accordance with an LED-current-on period of a PWM dimming signal and turning off the output current in accordance with an LED-current-off period of the PWM dimming signal, and the DC/DC controller includes a feedback control unit which performs feedback control for outputting a switching pulse to the output stage so as to make a cathode voltage of the LED equal to a reference voltage, and a pulse addition control unit which performs pulse addition control for adding a predetermined pulse number of additional switching pulses at a time of switching between the LED-current-on period and the LED-current-off period.

A vehicle lighting device and a method of controlling luminance thereof are provided. The vehicle lighting device includes a camera module configured to capture an image of the driver's face, a sensing unit configured to detect the surroundings of a vehicle, a lighting unit including at least one light source to illuminate the interior of the vehicle, and a controller. The controller is configured to acquire information on a daytime mode and a nighttime mode through the sensing unit, to acquire information on an infrared brightness level or information on the size of the pupil of the driver's eye based on the image of the driver's face captured by the camera module, and to control the luminance of the lighting unit in response to the acquired information.

A vehicle user interface apparatus for a vehicle including a light emitting unit configured to emit light; a touch sensor configured to sense a touch; a processor configured to control the light emitting unit to emit the light in response to an event, activate the touch sensor when the light is emitted, and provide a signal to control a vehicle device corresponding to a touch input received through the activated touch sensor; and a cover covering the light emitting unit, the touch sensor, and the processor, the cover configured to transmit the light into a passenger compartment with a specific shape when the light is emitted.

A lighting control system for a vehicle includes a controller configured to be disposed at a vehicle so as to connect with or communicate with at least one light of the vehicle. The controller, responsive to at least one input, adjusts a color of the at least one light of the vehicle and an intensity of the at least one light of the vehicle. The input may include one or more of (i) a driver attentiveness input and (ii) a driver age input, and optionally a time of day input, an ambient light input, a weather condition input, and/or a navigation input.

A method for calibrating a light module including a set of light-emitting elements, the method including powering the light-emitting elements so as to obtain an image projected by the light module, the projected image including a set of pixels, each pixel corresponding to at least one subset of at least one light-emitting element of the light source; for each pixel of the projected image, comparison of a difference between a light intensity of the pixel with a predefined light intensity of a corresponding pixel of a reference image, with a threshold; in the case where the difference is above the predetermined threshold, determination of a modified power supply value of at least one first light-emitting element of the subset corresponding to the given pixel; and storage, in a memory of the light module, of the modified power supply value in association with an identifier of the subset including the first light-emitting element.

A method for calibrating a light module including a set of light-emitting elements, the method including powering the light-emitting elements so as to obtain an image projected by the light module, the projected image including a set of pixels, each pixel corresponding to at least one subset of at least one light-emitting element of the light source; for each pixel of the projected image, comparison of a difference between a light intensity of the pixel with a predefined light intensity of a corresponding pixel of a reference image, with a threshold; in the case where the difference is above the predetermined threshold, determination of a modified power supply value of at least one first light-emitting element of the subset corresponding to the given pixel; and storage, in a memory of the light module, of the modified power supply value in association with an identifier of the subset including the first light-emitting element.

A vehicle component includes a housing, a faceplate, an electrical device a photosensor, and a lighting system. The faceplate is attached to the housing, and has a first opening and a second opening. The electrical device is at least partially disposed within the housing so as to be accessible through the first opening, and having an electrical connection configured to receive electrical power from an electrical power supply. The photosensor is at least partially disposed within the housing and within the second opening. The lighting system is configured to be activated by the photosensor and powered by the electrical power supply of the electrical device.

Indicator circuit having a backlight and an indicator light associated with a graphical element. The graphical element is adapted to be illuminated by the indicator light for indicating an active vehicle function as well as backlit by the backlight. A switch coupled to the backlight selectively turns OFF the backlight in response to a drive signal supplied by the indicator light. In this manner, the backlight is OFF when the graphical element is illuminated by the indicator light.

A screen control apparatus of a moving object, a method thereof, and a system thereof are provided. The screen control apparatus includes: a communication device that receives illumination measurement data measured by at least one information providing moving object from a server; an illumination score calculating device that calculates an illumination score for the received illumination measurement data; an illumination determining device that selects reference illumination measurement data depending on the illumination score and determine illumination; and a controller that controls a screen brightness on the basis of the determined illumination.