LED headlight energy saving long life lighting effect still needs to be improved

The application of LED technology in automobile is more and more widely, has to enter the car taillight headlight category. Data picture

People who are concerned about Audi's latest models may have found that the LED (light-emitting diode), which has been widely used in brake lights over the past few years, has begun to appear in the headlights. In fact, the role of LED lighting technology is not only the decoration, it will be the future direction of the development of automotive lighting.

Potential, lighting effect still needs to be improved

Solution: a light emitting diode is composed of a word can be directly converted into electrical energy into light energy compound crystal semiconductor, gallium arsenide and gallium phosphide is the basic material.

Automotive Engineers and designers have a strong interest in light-emitting diodes, compared with the traditional incandescent lamp, LED headlamps are not only high lighting effect, and low energy consumption. In the case of the same illumination, the demand of high power led to the power demand is half of the halogen lamp. Although in the current circumstances, LED can not reach the energy efficiency of xenon headlamps, but this technology still has great potential for development. Between 2004 and 2006, the average performance of LED increased by nearly two times. Professionals expect that by 2008, LED will be 3 times higher than in 2004. At the same time, the focus of automotive experts focus on white multi chip light-emitting diodes, they expect to 2009 or in 2010, the light-emitting diode can produce the same power as the current xenon lamp. In addition to the festival, LED also has a lot of other materials are difficult to match the advantages, such as its life of up to 10000 hours, the basic and the normal service life of a car.

Array technology led lighting evolution

In the automotive industry, the application of LED is based on the LED array technology - a lot of high power light-emitting diodes on a circuit board, which is called the array. This combination has a powerful function, each of the light-emitting diodes on the circuit board can be independently controlled, so that the distribution of light can be arranged according to the actual requirements.

In the long run, all conceivable lighting features can be achieved through the control of the light emitting diode, such as the regulation of the dynamic light and the angle of the fog lamp. In addition, such as highway mode, active lighting function or turn lighting function can be controlled by a single or multiple light-emitting diodes to adjust. With this technology, similar to the Mercedes Benz owned headlamps village mode, highway mode can be completed by a simple program settings. It can be predicted that the future application of intelligent lighting systems in the mobile components may be fully replaced by LED products.

Source: Beijing News