Audi have launched production of the Matrix LED headlamps in their new A8.

The principle of the new technology lies in dividing the LED high-beam headlamp function into numerous individual segments. The four-chip LEDs in the current generation of headlights of the A8 will be replaced in the next go-round by 25 small emitters, five of which shine through a single reflector in each light. The new headlamps are also a highly distinctive design feature during the day, supported by the new look of the daytime running lights.

The small individual diodes that work together with lenses placed in front of them or with reflectors provide consistent and precise illumination without need of a swiveling mechanism.
They are simply switched on and off individually or dimmed to suit the situation.

When the camera in the A8 detects an oncoming vehicle, the matrix of individually-addressable emitters is juggled to darken slices and spots out of the high-beam pattern in the relevant angles to avoid dazzling other drivers. The closer the other vehicle comes, the more individual LEDs are darkened or dimmed. Even on curvy roads, the system can react accurately to up to eight oncoming cars, providing the driver with consistent, bright illumination—significantly more, say Audi, than with mechanical dimming.