Professor Chen: LED enters the field of lighting. This is technological progress.
Reporter: At present, LED products are mainly used in automotive lighting and outdoor lighting, but not indoor lighting. What do you think of this in this regard?
Professor Chen: LED has been widely accepted in decoration, landscape, signal, red and green traffic lights, garden lights, car lights and some special-purpose lighting, but its heat dissipation, optical design, single-frequency power and output luminous flux The price/performance ratio is still unsatisfactory, and of course the light effect needs to be further improved. At present, the luminous efficacy of commercial white LEDs is still 50-60lm/W, while the price of 1W white LEDs is about RMB 30, which needs to be improved and improved to be applied to indoor lighting.
Reporter: Saving energy In addition to using low-energy products, the use of renewable energy is also an effective means. Recently, Sharp and other companies have successively launched solar LED lighting products. Can this be seen as a direction for LED development?
Professor Chen: In combination with LED and solar energy and wind energy, due to the low-voltage driving characteristics of LED, it has application advantages, and human existing traditional energy sources such as oil, coal, natural gas and nuclear energy are all within 200 years. To be exhausted, it is effective to promote renewable energy such as solar energy and wind energy. LED lighting is an inevitable trend in this respect, and it also has considerable advantages.
Reporter: The weather in the coastal cities of southern China is cloudy and uncertain. During the rainy season, the sun is not enough, and the wind is not large. Will these factors affect the promotion of solar energy and wind energy?
Professor Chen: These problems can technically solve the problems of insufficient sunshine and limited wind energy, and even adopt a strategy of complementary power supply and renewable energy. The problem is still the practical problem of inefficient use of solar and wind energy and high cost. This issue has yet to be made by the scientific and technological personnel of renewable energy.
Reporter: You are not only engaged in the research of optical power, but also the tutor of doctoral students. Please talk about your personal ideas in the training of electric light source talents.
Professor Chen: Now is the era of information leap development, innovation is the soul of industry development, independent intellectual property rights are the real source of corporate profits, and all of this is determined by talents. Cultivating electric light source talents is China's first country from electric light source manufacturing to a strong country. The important and fundamental measures, "ten years of tree breeding, a hundred years of tree people", hope that more people of insight can care about education, I hope that our students can study hard, accumulate, and truly become the pillars of the country. This is also the sacred duty of the times to our teachers.
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