In 2010, China's LED industry has made great progress and progress. Whether it is the government's policy support for the LED industry or the advancement of LED technology, we have left a deep impression. In order to save energy and reduce the greenhouse effect, all countries in the world regard the LED lighting industry as a new generation of green growth industry, and focus on training. In the automotive field, LED lights are also in full swing.
Widely used in automotive lighting. Until 1990, HP and Toshiba of the United States introduced red and yellow high-brightness LEDs with an InGaAlP/GaAs structure with a light intensity of more than 1000mcd and 1993, Japan’s Nichia Corporation invented InGaN/Al2O3 blue and green high-brightness LEDs. And mass production paves the way for LED lighting of automotive light sources.
In 1985, LED car lights first appeared on passenger cars. In 1986, the use of LED high-position brake lights on Nissan 300zx cars marked the beginning of the era of LED car lamps. Internationally renowned automobile brands such as BMW, Cadillac, Buick, Volkswagen, Ford, Mercedes-Benz, Toyota, Mitsubishi, Mazda and Skoda have successively launched LED automotive lamps.
LED car lights are growing at a double-digit rate every year. In 2005, the output value reached 546 million US dollars, accounting for 14% of the world's LED applications. China first used LED high-position brake lights on the Shanghai Volkswagen Santana 2000 in 2000. China's LED car lamps are growing at an annual rate of 70%-80%. China's LED car lamps are growing at an annual rate of 70%-80%. In 2006, the output value exceeded 100 million yuan.
In 2010, China's LED automotive lamps were called "LED Years", and the domestic LED industry was exploding, and its application range was also wider and wider, and it was constantly being taken seriously in the automotive field.
In the future, LEDs will gain wider application in automobiles as LED quality increases and prices drop.
Design must take into account two aspects
Directly related to the optical parts of the light, there are three parts of the light source, mirror and light mirror, collectively referred to as the light group. The optical design of the headlights is the lighting group design of the lights. The design principle of the lighting group is the first consideration: First, it conforms to the overall structure and modeling of the vehicle lamp in the OEM; second, it meets the requirements of the national regulations and standards.
The LED light source should be based on the requirements of different lamps for the luminous flux, and LEDs of different powers are used to form the LED array. The mirror is a mirror specially designed to improve the light extraction rate of the light source and meet the requirements of light distribution performance. The effect is to illuminate the light flux emitted by the light source onto the mirror according to a certain distribution. The function of the light distribution mirror is to distribute or scatter the light reflected by the mirror through the pattern on the light distribution mirror to the desired position to achieve the light distribution requirement.
For a long time, the car lights use the incandescent light point source as a reference to determine the lighting design of the lamp and form the corresponding software. The specifications and standards of lighting are also formulated in this way. LED light source has its own characteristics. The design and manufacture of LED automotive lights cannot be simply applied to conventional methods. The design and manufacturing methods must be modified. At the same time, the specifications and standards that are compatible with LED automotive lights must be developed.
Through the 2010 "LED first year", LED automotive lamps have been widely used, and some people in the industry expect that by 2015, China's LED industry will reach 500 billion. At present, with the financial investment in energy conservation and emission reduction everywhere, LED car lighting has become a big cake in the industry.
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