2012 Global LED Lighting Technology Dynamic Collection [Full Text]
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Recalling the lighting industry, with the development of science and technology, lighting sources from incandescent, fluorescent, HID to the fourth generation of green new energy LED development, which not only changes in the principle of lighting, and lighting sources tend to be more energy-efficient, environmentally friendly, green. In the global energy crisis, the domestic phase-out of incandescent lamps was put on the agenda in October 2012. At the same time, the mercury pollution of energy-saving lamps has attracted the attention of the general public. Under this circumstance, the promotion of LED lighting applications has attracted the attention of countries, governments, and enterprises. However, the widespread application of LED lighting is also hindered by technical problems such as heat dissipation design, materials, electrical accessories, and driving power. Therefore, thousands of lighting network Xiaobian special for everyone to inventory nearly a week LED lighting industry new technology articles.
The world's first: the birth of 36-volt lighting products Heyuan
After many years of research and development, a globally safer, more energy-efficient and more environmentally friendly lighting product, the â€œ36-volt LED lighting systemâ€ was successfully developed and mass-produced in Heyuan recently. Its inventor was a teacher at the elementary school in Yuanshan Town, Lianping County. Liu Dongxing leads a scientific research team. It is reported that "36-volt LED lighting system" consists of "AC 220 volt DC 36 volt" safety and energy saving switch and 36 volt LED lighting fixtures. One of the great advantages of this invention is that users do not have a shock hazard. The key to not causing electric shock is the safety switch. This single invention has already applied for 18 national patents and utility model patents.
University of Toronto Develops Controlled LED Lamp Calorific Solution
The LED lamp has the characteristics of energy saving and longevity, but its brightness is still far below the brightness of the 100-watt incandescent lamp. With the increase of the brightness, the problem of heat-generating the LED lamp will also appear. However, recently, three alumni of the University of Toronto joined forces to develop a feasible solution that can increase the brightness of LED lamps and effectively control the heat output of LED lamps.
The program is actually a specially designed electric lamp called NanoLight, which is similar in shape to a classic 100W light bulb. The surface is covered with a conductive circuit board and evenly distributed a certain number of LED lights, which can provide a wide range of lighting. And increase the brightness.
American scientists develop new materials for warm white LED lights
As we all know, LED light-emitting diode lamp is energy-efficient and has a long life, but due to the fact that the current LED light is mainly light blue, this hinders its popularity in the field of indoor lighting. Today, scientists at the University of Georgia in the United States have developed what is said to be the worldâ€™s first warm white LED lamp using a single phosphor and a single light emitting unit. The paper on the details of this material was published in the "Physics and Applications" journal of Nature's latest issue.
Japan Develops FED Technology Lighting Devices
On January 9, 2013, Dowa Holdings, Graduate School of Environmental Sciences, Tohoku University, Japan, and Tongwa Holding Co., Ltd. announced that they have jointly developed cold cathode field electron emission surface emitting devices that use carbon nanotubes (CNTs). The FEDfiELdemissiondisplay, which was previously developed primarily for display applications, has been used in lighting applications. Tohoku University of Japan and Tonghe will exhibit the research results of the device at the lighting exhibition "LIGHTING JAPAN 2013" on January 16-18, 2013, at the Tokyo International Convention and Exhibition Center.
Tamura has developed a white LED using antimony oxide
In the "Japan's 3rd LED and Organic EL Lighting Exhibition" held at Tokyo Ariake International Convention and Exhibition Center from January 16 to 18, 2013, Tamura and its subsidiary, Lightwave, exhibited their use of yttrium oxide beta. - Ga2O3 white LED. The LED uses a phosphor in combination with a GaN-based semiconductor blue LED chip fabricated on a Î²-a2O3 substrate. The difference lies in the fact that it is easier to increase the light output power than when using a general blue LED chip fabricated on a sapphire substrate.
Xiamen University uses ultra-thin aluminum film to crack the deep ultraviolet LED problem
A research team at Xiamen University solved the key problem of "light extraction efficiency" that restricts the wide application of this light-emitting device by overlaying an ultra-thin aluminum film on the surface of high-aluminum nitride nitride deep-ultraviolet light-emitting diodes. The application of such devices in the medical, environmental, military and other fields has opened up new methods and ideas.
Professor Kang Junyong of Xiamen Universityâ€™s School of Physics and Electromechanical Engineering has worked hard for several years to tackle the problem. A team of associate professor Huang Kai and PhD student Gao Na borrowed an ultra-thin aluminum film to solve this problem. When an ultra-thin aluminum film with a thickness of only 5 nanometers is coated on the surface of a deep ultraviolet light emitting diode, the aluminum film not only does not reflect the light emitted by the device more than a traditional mirror, but instead, it intelligently The light emitted from the side is collected, passes through the aluminum film layer, and is ejected from the front, which improves the light extraction efficiency.
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