标签：LED lighting technology

Solar led lighting technology innovation

LED with low power consumption, the extraordinary life has been widely applied to the signal indication, digital display and other weak areas. However, due to the opening angle is small of the traditional LED street light source, dot area, the scattering of light is highly directional light source, so it is easy to form a spot light uniformity and other factors shackles its application in the field of led lighting technology.

Solar led lighting technology innovation

Laiwu City, Phoenix Solar Lighting Co., Ltd. technical staff of painstaking research, trial and error, by traditional solar lighting structure, intelligent controller, reflector lamp angle updates and technical improvements, the optimal tilt angle design, flat head and round complementary, making it more uniform light, the overall higher brightness, lower cost, more conducive to the application and popularization.

The company has developed the flat head LED pillar and torch-style combination of light source structure, through the reasonable control of the flat head high brightness white LED installation angle. LED combination of light emitted by the uniformity of the illumination light and illumination to be increased dramatically. The technology not only makes light effects to be strengthen, but also the combination of light energy is about 4W, and the brightness can reach 20W or 40W, and can be more effective use of solar energy. They Only need 12W solar cell capacity, 12V/24Ah the batteries to ensure that such LED light source in five rainy days continue to work effectively, and the useful life is more than 100,000 hours for more than 10 times of the energy-saving lamps.

The combination of light source is specially developed for street light field cross-shaped and rectangular combination of the light source, giving full play to the opening angle flat head led lighting technology uniformity and round LED panel lights point area of ​​high brightness, so that the two complements each other, in order to maximize the light efficiency, overcome the point area of flat head LED brightness as Round LED, round LED light uniformity as flat head LED shortcomings.

For the controller, to achieve the maximum collection use of solar photovoltaic technology, 12V DC power supply to the light source to provide the energy reserves, the battery, the light source produces a 6500K white light. At the same time, by streamlining the intelligent controller structure, the structure is more simple, lower failure rate, good technical preparations to further reduce costs. Moreover, by detecting the output of solar cells and battery power, thereby determining the system status, to achieve automatic control of the entire system and intelligent management.

Unique advantages of LED lighting technology

As the new 4th generation light source, LED lighting technology started to take place of traditional light sources, causing huge revolutions in the lighting industry. This new light source is constantly upgrading as a result of innovations in drivers. From incandescent lights to energy-saving lights, from halogen lamps to LED lamps, light sources have been not only improved in the energy-saving aspect, but also enhanced comfort. As the representative of green light sources, LED lighting technology has potentials to dominate the market. Compared with other mature traditional light sources, what makes LED more advanced?

 

As the new 4th generation light source, LED lighting technology started to take place of traditional light sources, causing huge revolutions in the lighting industry.

 

In 1923, American scientists Rosoff (O.W.Lossew) discovered that silicon PN junctions have properties of electrical conductivity and luminescence. In 1955, R.J.Haynes published a research report about properties of gemanium PN junctions. And meanwhile, G. A. Wolff shared his study on the luminous phenomenon of GaP (gallium phoshpide). In 1968, Monsanto Company and HP produced a red LED for the first time, enabling LED Panel Light become a kind of electronic products to enter the market.

 

Energy saving: LED spectrum almost all concentrated in the visible range. The luminous efficiency can reach up to 80%-90%. Compared with incandescent bulbs, spiral energy-saving lamps and T5 trichromatic fluorescent tubes: the luminous efficiency of incandescent lights is around 12lm/W, can work for 2000 hours; the luminous efficiency of spiral energy-saving lamps is 60lm/W, and can work for 8000 hours; T5 fluorescent tubes have a relatively high luminous efficiency: 96lm/W, and can work for 10,000 hours; The luminous efficiency of LED tubes with diameters of 5mm is within the range of 20-28lm/W, but can work for more than 100,000 hours. Someone even predicted that the maximum LED lifetime in the future will be infinite.

 

It is believed that energy-saving lamps saving 4/5 energy is a great invention. LED can save 1/4 more energy than energy-saving lamp does. In addition, LED lighting technology has other advantages: pure light spectrum/good-quality rays, free of radiations, environmental friendly, reliable, durable, very low cost on maintenance and replacement, etc.. Thank you for the above advantages, it is estimated that LED lighting applications will dominate the market within 10 years.

 

LED usually operate under low voltage input, 1.4V-3V; normal working current is 10mA. During the production process, LED needs no mercury and inflation, good at impact resistance and shock resistance, easy to transport, safe and very environmental friendly.

The future of LED lighting technology

Here in this article, we will continue the interview of Professor Holland Yake from the University of Illinois, who is an expert of laser and light emitting diode (LED Panel Light ). The topic of today’s interview is the future of LED lighting technology.

 

Here in this article, we will continue the interview of Professor Holland Yake from the University of Illinois

 

Is there anything we can do to improve the LED lighting technology?

 

There are a lot of things that we can do to make them more competent to be the best and brightest lighting source in the world. Currently, we are looking for better wafers, committing crystal chemical researches, etc.. I made an alloy in GE. Then I made other semiconductor alloys, they are getting better. They can emit red-orange light, and also yellow light. Some other people who were doing similar works tried to use other types of alloys, which are able to send out blue rays. But when they tried to convert these blue rays into green, they met with big problems. No one presently can solve this problem very well and obtain yellow rays.

 

After these years development, has LED been the mainstream lighting source?

Basically, LED is beginning to take over the lighting market, from special lighting to ordinary lighting. For now, the whole world is using this technology, in various forms and various colors.

 

Is it possible for us to see the continuous growth of LED lighting technology?

You can treat them as a kind of lighting source, but also can use them as laser, just like in the field of surgery and photosensitizing. This is the biggest feature of LED, since incandescent bulbs cannot do these staffs. You can use LED to make a lot of things, both in the medical area, the instrumental area the automobile area. All lights used on vehicles can be replaced by LED lights. As a matter of fact, LED lamps are more advanced in automobile applications due to their small sized and flexibility in forms and designs. LED headlights and taillights are more durable compared with traditional high-pressure sodium lamps. This is not the end of the story. To be honest, LED is in her infancy. It seems that LED has already stepped into her adolescence, but trust me, she needs more time to grow up. The only thing we can do now is just wait.

History of LED lighting technology

As early as 1962, about 50 years ago, Nick Holonyak together with his team in GE developed the first Light Emitting Diode (LED). Today, LED lighting technology can be seen everywhere in the world – from bridges to vehicle headlights, from keychain to flashlight. As the 4th generation lighting source, LED is even supposed as the lighting source that brighter than the sunlight. But the initial research and development works were full filled with uncertainty and competitive. At that moment, LED lighting technology was just a result from another pioneering technology – laser. However, in the followed days, LED Panel Light has been in the constant evolution and now has been one of the major lighting applications in many areas. What the history of LED? About this question, reporters interviewed Professor Holland Yake from the University of Illinois:

 

As early as 1962, about 50 years ago, Nick Holonyak together with his team in GE developed the first Light Emitting Diode (LED).

 

What the initial reaction that LED received from the market?

When I noticed that I am working on the way of LED development, I have already defeated the entire world by applying my alloy technology in the field of laser. One editor of the “Reader’s Digest” called me in February 1963 and pointed out to me that LED lighting technology will one day cover the entire spectrum and become the most suitable lighting source for white-rays. I believed his words. But in my opinion, this will take more than 50 years.

 

About the Laser?

It has been recognized for a very long time that light has no coherence. Otherwise, they cannot be captured by our eyes. Since human eyes can only sense incoherence light. In 1962, Lincoln Laboratories of MIT was still under the leadership of Robert Rediker. They invented a kind of diode that can self-emit multiple rays and used it to send out IR signals. When they published a copy of relevant report in July, we predicted that this new device will make the coherence light be possible.

 

How big is the first LED?

Very small. Of course, if you want, you can make it much bigger. Actually, people are now doing this job. You know, in the area of semiconductor application, semiconductors are always the final winner and swept the electronic products.

 

What was the original LED looks like?

LED you see today is on a relatively cheap platform, which is just a formality. In fact, LED can be made in various forms, various colors, various geometries.