As a kind of lighting sources with huge developing potentials, people paid more and more attentions on their incomparable advantages: long service life, rugged construction, low power consumption and flexible appearance. In recent years, single-ray LED technologies have been widely used in various areas, like large screens, signal lamps and landscape lighting applications. With the rapid development of LED, white-ray LED lighting technology was finally stood out from the crowd and conquered the most consumers, giving them full of expectations on white-ray LED lighting applications. It has been proved that white-ray LED lighting applications are more advanced in lighting efficiency, CRI, color temperature. In the meanwhile, the magnificent parameters of LEDs, like power consumption of signal LED chips and luminous flux of the entire LED model continued to make breakthrough.
However, using white-ray LED lighting applications indoors is still a big challenge for LED manufacturers. There are still a lot of technological problems need to be solved. Take single LED chip for example, the luminous flux of single LED chip cannot meet the basic requirements for indoor lighting applications. In addition, the over-expensive production costs, less lighting efficiency than common energy-saving lamps, lacking of stabilities, etc. Currently, only testing results can “cheer people up”. It really takes time to produce market-oriented products that truly meet the lighting requirements in practices. It is an inevitable truth for developers, producers and buyers.
The development status of white-ray LEDs.
Born in 1960s, the brightness of LED increased 30 times by average for every 10 years. On the other hand, their prices dropped nearly 10 times for every 10 years. The development of LED technology was completely followed the “Hydes’s Law”. According to related reports, the current luminous efficiency of white-ray LEDs is around 100lm/W (laboratory data), while the actual high-powered white-ray LED lighting applications in commercial and industrial area has also reach up to 40lm/W. With the continuous breakthrough in technologies, the luminous efficiency of high-powered white-ray LED lights still has large room for growth. It is estimated that by 2020, the maximum luminous efficiency of white-ray LED lamps can reach up to 150-200lm/W. In the meanwhile the luminous flux of these applications was also been proved dramatically due to the technological breakthrough in packaging and heat dissipation. From a latest data report from Nichia, LED modules with 5.5W (250lm) and 11W (400lm) have been successfully developed recently, which is a big step forward for white-ray LED lighting industry.