Blu-ray LED Nobel Prize for enthusiasm behind reflection

Since the winner of the Nobel Prize in physics on October 7th, despite the absence of Chinese people on the list, in the spirit of science without borders, the lighting industry in China has been jubilant, and the media in the industry have become more like explosions. Pots and large inks rewarded the winners. On the day when the Nobel Prize Committee of the Royal Swedish Academy of Sciences unveiled the physics prize, most of the Chinese lighting industry’s front page position was given to three Japanese and American scientists.

Reflection 1: We should not excessively exaggerate the Nobel aura. The real aura is the scientist.

Since the scientists of Akazaki, Amano Hiroshi, and Nakamura Masaru won the 2014 Nobel Prize for physics for inventing the "High Brightness Blue Light Emitting Diode", articles named after the word "Nobel Prize" have been affixed to all major planes. In the online media, Nobel's weight has surpassed the winning projects in a sense, becoming a blind "wonder of awards." First of all, what I want to say is that when the whole world is mad about it, we should Quietly think about whether our eyes should turn from awards to winners. As Professor Wang Haibo said: Applying the description of a world champion, when you stand on the world championship podium, the next day starts from scratch again. This means that this is a prize. What he brings is everyone's honor, a halo, and the real LED can't develop. The extent to which our company can develop depends on our daily work. This is narrowly defined. In terms of giving us anything, we can't bring it.

You may know Nakamura's "nationality mystery," but do you know how he invented the blue LED, and then how to challenge another problem, to create a strong compact GaN-based green laser, to fill the "green" "You're aware of the lawsuits of Shuji Nakamura and Nichia Chemical, but you know that he is actually a "second" product. (At that time, the company asked him to develop blue LED, he would use "GaN" to "dry". Others think that No, three years later, he made "InGaN" and "hard", and the following year, the first high-brightness blue LED was successfully commercialized.In addition, he also let "GaN" emit blue-violet laser pulse oscillation, life expectancy. Up to 10,000 hours, while other competitors' companies can only emit light for one second.)

Reflection 2: You know the Nobel Prize, but do you understand the blue LED?

When the author learned that the blue LED won the Nobel Prize, the first reaction was very hot and the blue light of the harm of heat, so can not help wondering how the public will be interpreted as a harmful Blu-ray became a blue LED sought after by the world, how, On the other hand, I think that there are many people who have similar doubts with the author. When the mass media in the epoch-making significance of the large-scale ink rendering of blue LED, as the lighting industry's professional media and senior experts, at this moment, it should play a role in "drainage "And the role of "teaching doubts", rather than just follow the crowd.

Chen Yansheng, deputy director of the China Lighting Association, told the author: The two concepts, the invention of Blu-ray itself is a contribution to the scientific community, if there is no Blu-ray, there will be no white light, LED can not enter the lighting, the so-called Blu-ray harm That is to say, the white light composed of three primary colors in white light means that too many components of blue light will cause harm. Now, the architectural lighting standard requires that the color temperature should not exceed 4000k. This does not need to consider the blue light, but the color temperature Too high, there may be some problems.

It is understood that the rate of increase in LED efficiency is also in accordance with Moore's Law, that is, to double every three years. And the cost? It is said that the cost of one lumen per decade is reduced by a factor of ten, and the brightness of each LED package is increased by 20 times. This law is called Haitz's law. If this law continues to be established, by 2020, LED light sources will become the cheapest light source. If the world will use LEDs at the time, the power consumption for lighting in the world will be reduced by half.

Of course, for the blue LED itself, there are many worthy of our research and study. Whether you are a physic enthusiast or a lighting practitioner, you need to understand and learn more about the development and application history of blue LED. It is the biggest for the Nobel Prize winners. Awe.