A method and an arrangement for light adaptation of the eyes of a driver of a vehicle when exiting a tunnel. The method and arrangement determines a tunnel exit position and changes a light source luminous flux of at least one light source in the vehicle as the vehicle approaches the tunnel exit position in response to the determination of the tunnel exit position.

A method and an arrangement for light adaptation of the eyes of a driver of a vehicle when exiting a tunnel. The method and arrangement determines a tunnel exit position and changes a light source luminous flux of at least one light source in the vehicle as the vehicle approaches the tunnel exit position in response to the determination of the tunnel exit position.

An LED driving device includes 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. 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. 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. A pulse addition control unit 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.

An LED driving device includes 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. 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. 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. A pulse addition control unit 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.

An LED driving device includes 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. 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. 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. A pulse addition control unit 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.

An LED driving device includes 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. 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. 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. A pulse addition control unit 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 disclosure describes, in part, systems and techniques for performing eye tracking. For instance, a system may include a first imaging device that generates first image data. The system may then analyze the first image data to determine a location of a face of a user. Using the location, the system may cause an actuator to move from a first position to a second position in order to direct a second imaging device towards the face of the user. While in the second position, the second imaging device may generate second image data representing at least the face of the user. The system may then analyze the second image data to determine a gaze direction of the user. In some instances, the first imaging device may include a first field of view (FOV) that is greater than a second FOV of the second imaging device.

This disclosure describes, in part, systems and techniques for performing eye tracking. For instance, a system may include a first imaging device that generates first image data. The system may then analyze the first image data to determine a location of a face of a user. Using the location, the system may cause an actuator to move from a first position to a second position in order to direct a second imaging device towards the face of the user. While in the second position, the second imaging device may generate second image data representing at least the face of the user. The system may then analyze the second image data to determine a gaze direction of the user. In some instances, the first imaging device may include a first field of view (FOV) that is greater than a second FOV of the second imaging device.

A vehicular lighting control system includes a controller configured to be disposed at a vehicle and operable to control interior lighting of the vehicle, with the interior lighting including (i) an interior light of the vehicle and/or (ii) a backlighting light of a display of the vehicle. The controller adjusts color of the interior lighting for different driving conditions. During daytime, the controller adjusts color of the interior lighting of the vehicle to follow a daytime color scheme. Responsive to a navigation input, the controller determines if an input destination has an estimated arrival time of the vehicle after daytime. Responsive to determination that the estimated arrival time of the vehicle is after daytime, the controller maintains the daytime color scheme for the interior lighting of the vehicle until the vehicle arrives at the input destination after daytime.

A vehicular lighting control system includes a controller configured to be disposed at a vehicle and operable to control interior lighting of the vehicle, with the interior lighting including (i) an interior light of the vehicle and/or (ii) a backlighting light of a display of the vehicle. The controller adjusts color of the interior lighting for different driving conditions. During daytime, the controller adjusts color of the interior lighting of the vehicle to follow a daytime color scheme. Responsive to a navigation input, the controller determines if an input destination has an estimated arrival time of the vehicle after daytime. Responsive to determination that the estimated arrival time of the vehicle is after daytime, the controller maintains the daytime color scheme for the interior lighting of the vehicle until the vehicle arrives at the input destination after daytime.