May 21, 2024

Simply pursuing LED light effects will only lead the industry astray

"China has invented LED fluorescent tubes with a lighting efficiency higher than 140 lm/W and has achieved industrialization."

“Crui continues to expand its innovative edge and announces the performance of its high-efficiency XLamp XP-G LEDs to a new level, increasing the light efficiency of the product to 140 lm/W”.

“Nichia has released a five-year roadmap for light efficiency. The light production in mass production is 130lm/w. This figure will increase to 150lm/w in 2012 and 180lm/w in 2015”.

“Osram has created a new record for the efficacy of high-power red LEDs. The 1 mm2 chip emits 609 nm (λ-dom) and the measured light efficiency reaches 201 lm/W at 40 mA.

With the rapid development of LED technology and the gradual improvement of its luminous efficiency, the LED application market will be more extensive. Especially in the context of the global energy shortage worry, the prospect of LED in the lighting market has attracted worldwide attention. In the face of huge market opportunities, the world's major companies have accelerated the pace of research and development.

In the field of LED lighting, many hot topics are discussed. LEDs are more energy-efficient, have more applications, and have higher luminous efficiency than traditional light sources. Many companies are also actively breaking through to higher light efficiency. It is true that the improvement of light efficiency makes the brightness greater and the energy saving is stronger. However, in fact, people in the industry know that it is not enough to rely on a light efficiency indicator for lighting products, so it is necessary to emphasize “quality”.
At present, people in the industry pay attention to the light efficiency per watt, but they have almost forgotten the inverse relationship between the square of the luminous flux and the illuminance and the relationship and characteristics of the directional light source. They pay attention to the replacement demand blindly, but forget the phenomenon of the dominant characteristics of the LED.

Xu Xueji, a professor and doctoral tutor at Fudan University, told reporters that most people in the industry are focusing on improving light efficiency. It is not advisable to pursue light effects. There are many problems in the industry. It is painful and happy under the fire. With. But very few people think seriously: Where does this pain come from? How to eliminate and alleviate this pain? The industry must face up to the problems of LED lighting.

Wu Hong, director of the National Rare Earth Phosphors and Lights Collaboration Network, and the editor of the Rare Earth Information of the National Development and Reform Commission's Rare Earth Office, said that we should face up to the problems and shortcomings of the current LED lighting industry, and use the responsibilities, conscience and A persistent scientific attitude to analyze and solve problems.

It is true that in the boom of China's vigorous development of the semiconductor lighting industry, industry professionals need to be more calm, rational and reflective, and must promote the correct thinking of LED lighting development to relevant government officials.

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