The development direction of future lighting: the development of semiconductor lighting products

A variety of semiconductor lighting products

In recent years, the application of semiconductor light-emitting principle of semiconductor light source, a breakthrough. Light emitting diode with its long life (up to 1 X with the old Oh), good color (Ra 75-80), no stroboscopic, excitation of short response time (NS), vibration resistance, weather resistance, safe use and many other advantages is widely used. In the past is mainly used for signal display, light and monotonous. However, the luminous efficiency of the semiconductor light source has increased nearly 30 times over the past ten years, the cost is reduced by 10 times, and the emergence of green and blue and yellow, the semiconductor light source, the application range of the semiconductor light source has been greatly expanded, because it has a variety of colors, especially suitable for navigation, traffic signal and advertising, garden and landscape lighting and other color places, such as traffic lights, car brake lights, taillights etc.. In recent years, the white semiconductor lamp has been developed successfully by using the principle of tricolor semiconductor light mixing or the phosphor coating before the blue semiconductor lamp. White semiconductor light has a greater effect. 1998 only 5lm/w, in 1999 has reached 5lm/w, with the equivalent of incandescent lamps. In 2000, the light effect of test samples for Japan Nichia 25lm/W, comparable with tungsten halogen lamp.

Hewlett-Packard Company forecast: by 2005, the semiconductor light source luminous efficiency of 50lm/W. By the time of 2010-2015, with the development of technology and the breakthrough of key technologies, the luminous efficiency of semiconductor light source is expected to reach 150-200lm/W.

The use of semiconductor light source lighting, will save a lot of energy. Japan estimates that if the use of light for the fluorescent lamp two times the semiconductor light source to replace half of Japan's incandescent and fluorescent lamps, saving energy equivalent to 6 billion liters of crude oil each year. If the traffic lights, neon lights and billboards also replaced by the semiconductor light source, the whole of Japan will save 4 billion liters of crude oil energy.

White light semiconductor lighting into the family, there will be a huge market. According to statistics, in 2000 the Japanese incandescent lamp production was 140 million, while the white semiconductor light source output has reached 100 million, with the rapid growth of production and technological progress, the cost of semiconductor light source in the sharp decline. At present, the semiconductor light source is being further studied, and all countries have invested a lot of power, including the design and development of the semiconductor light source and the development of new standards.

China's white semiconductor lighting began to industrialization, market potential, market demand. China is a handful of blue and white semiconductor lighting manufacturing technology in the country, China attaches great importance to the development of the industrialization of C Hu material and light emitting device, the National 863 plan and super 863 plans are to give key support. At present, the power of a single product of the common semiconductor light source is only 20-30mw, the output luminous flux is 11lm, and the output of the light source will decrease sharply with the increase of the working temperature, while the price is high.

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