Photo: Audi
Audi are a bit like the Japanese in that they like to pay extra attention to the details, often forgetting the bigger picture. For their flagship sedan, that means a refresh which includes new, and quite controversial headlights.
The wave pattern formed by the LEDs on the current A8 is probably its most distinctive feature. If anybody who doesn't know Audis asks you how to tell the A6 from the A8, you just point at lights.
They've changed that completely on the A8 facelift, and to compensate for the loss of originality Audi has reinvented the way indicators work.
Instead of one bulb that flashes on and off like on a normal car, Audi's system creates a sequential pattern, a bit like a wave. The pattern is formed by 18 LEDs at the front and 24 LEDs at the back, lighting up from the inside outwards.
During flashing, the LEDs are sequentially activated every 20 milliseconds, from the inside outwards in the desired turning direction. After 150 milliseconds, all segments are bright; for another 250 milliseconds they illuminate with full intensity. Afterwards, the turn signals go dark before repeating the lighting sequence.
They've changed that completely on the A8 facelift, and to compensate for the loss of originality Audi has reinvented the way indicators work.
Instead of one bulb that flashes on and off like on a normal car, Audi's system creates a sequential pattern, a bit like a wave. The pattern is formed by 18 LEDs at the front and 24 LEDs at the back, lighting up from the inside outwards.
During flashing, the LEDs are sequentially activated every 20 milliseconds, from the inside outwards in the desired turning direction. After 150 milliseconds, all segments are bright; for another 250 milliseconds they illuminate with full intensity. Afterwards, the turn signals go dark before repeating the lighting sequence.
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