LED lighting benchmarks, praised by the Royal Swedish Academy of Sciences as "21st Century Edison", 2014 Nobel Prize in Physics winner Nakamura Shuji at the 2016 China Chengdu Global Innovation and Entrepreneurship Fair on June 25th In an interview with the media, laser lighting will replace LED lighting in the next decade. There are comments on the Internet that the efficiency of laser illumination is thousands of times that of LED, which not only increases the projection distance, but also improves safety, while being smaller and more compact.
This laser lighting is on fire, WeChat friends circle is full of laser lighting will replace the traditional LED lighting news in 10 years, we do not care whether this laser lighting is really as true as Nakamura Shuji, will replace in just ten years LED lighting. But we believe that at least the argument that "the efficiency of laser illumination is thousands of times more than LED" is impossible. Because if the efficiency is to reach thousands of times of LED lamps, it means that the original LED lamps are less than 0.1% efficient. In the field of basic lighting theory, there is a Km value called the spectral optical performance maximum, which is 683 lm / w. This is the limit for the conversion of electricity into light in the visual state. What do you mean? Any electric power of one watt, if it is converted into visible light, it is impossible to be larger than 683lm! If the efficiency of laser illumination is to reach thousands of times of LED, the performance of LED needs to be reduced to 0.683lm/w. .
Let's take a quick look at the difference between LED lighting and laser lighting. From the point of view of the excitation source, there is not much difference between the laser and the LED light. The YAG laser has one more laser radiation. The LED adds a fluorescence conversion after the semiconductor excitation light. From the visual point of view, the laser monochromaticity is very high. Well, the spectrum of the LED is wider, suitable for display, lighting, etc.; in brightness, the brightness of the LED is not comparable to the laser. Because the directivity of the laser is very strong, it is linear light, and if it is not processed, the brightness is much larger than that of the LED. The RGB visual effect of the laser is still immature, and it is still only in the laboratory stage.
So the question is, laser lighting is a flaw? Is laser lighting patented in China? Xiaobian brings you a brief introduction.
First, what is laser lighting?
Laser illumination is divided into infrared laser illumination and visible laser illumination.
Infrared laser illumination is the use of semiconductor materials to release photons in the process of cavity and electron recombination to release photons to generate light energy, and then photons form a laser beam in the resonant direction of the photons. It is mostly used for night vision and night camera monitoring lighting.
Visible light laser illumination, according to the principle, is divided into blue light excitation phosphor to achieve white light illumination and red, green and blue laser synthetic white laser, or true color light illumination (such as Qingdao Zhongke Spectrum laser illumination).
Laser car headlights launched by BMW Concept Car in 2011
Second, has laser lighting already patented?
The answer is certainly yes. As early as 1970, SIEMENSAG applicants had already placed the patent "Laser lighting system" in Germany, the United States, the Netherlands, the United Kingdom and other countries.
This is a method and apparatus for retrieving information from a hologram set in a matrix of columns and rows. Unfortunately, laser lighting has not been developed and applied. In fact, the development of laser lighting has been going on in history, but it is relatively unknown. Some people even say that the concept of laser lighting is earlier than LED lighting, of course, this can not be verified.
Let's take a look at the layout of laser lighting in China.
The layout of laser lighting patents in China is slightly slower. The reason may be related to the industry situation of traditional Chinese lighting and the guidance of Chinese government policy. The earliest patent application in the field of laser lighting was the “laser super high†applied by Tian Jinghua in 1985. Power lighting", patent publication number CN85102745, but the examiner rejected the application for violating the principle of energy conservation, and then applied the laser to the illumination, which was applied by the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences in 1993. Method and system for strong illumination", Patent Publication No. CN1100187A.
Since 2006, more and more individuals and companies in China have begun to lay out patents related to laser lighting, although the number of major areas is still the combination of optical components, systems or instruments and cameras, electronic flash devices, and electronics. The application of the flash unit in the laser, the majority of the rest are concentrated in the fields of optical recording, laser recording, telescope, etc., because there is still little research in the field of laser illumination, but in recent years, patents on laser illumination have begun to increase. If you want to develop in this field, you can consider it.
In the next 10 years, whether laser lighting will replace LED lighting, we can't completely predict the pre-break. Based on the smaller size, more compact structure and far projection distance of laser illumination, LED lighting, such as lamp and display technology, may indeed be replaced in some fields. But in the field of general lighting, intellectual property engineers at the Innovation Center have doubts about laser lighting replacing LED lighting in a decade. However, we can be sure that any innovative ideas may be the future development direction of the industry in the next 10 years, even 20 years, 30 years, and become the trend of the times. It is worth keeping our attention to related technologies!
Editor: Yingzi
Telecom T Series Lead Acid Battery
Custom Lead Acid Battery,Telecom T Series Lead Acid Battery,2V 300Ah Battery,Valve Regulated Sealed Battery
Wolong Electric Group Zhejiang Dengta Power Source Co.,Ltd , https://www.wldtbattery.com