LEDs supply light source for BMW head-up display
High-brightness red and green LEDs are providing the light source for the head-up display in the new BMW 5 Series.
The light source comprises a total of 128 high-brightness red and green LED chips arranged in groups of four in a matrix of 32 chip modules. These two colors combine to produce the orange color used for all the dashboard indicators in the car.
The arrangement of LEDs provides particularly uniform illumination for the TFT display on which the head-up display is based. The matrix is attached to an aluminum heat sink and comes with a casing and flexible cable connector.
The head-up display appears to float over the bonnet of the car and presents drivers with important data such as current speed, warnings and navigation information so drivers no longer have to take their eyes off the road.
This optical effect is created by using four mirrors to direct the image from the TFT display onto the BMW?s specially adapted windscreen. The display can be programmed and is easy to read day or night in all conditions thanks to an Osram light sensor which automatically adjusts the brightness according to ambient conditions.
Properties such as long life, vibration resistance and thermal stability make these LED light sources ideal for use in the automotive industry. The design can be varied in terms of its color, shape and size.