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In the light effect, although some light has reached 90lm / W, even in the laboratory efficiency of single light source has reached 250lm / W, but there is still a very large tap potential. Improve efficiency is to improve the electric light - the light conversion efficiency of the most direct way, the heat is also a great help.Second, the light source color is also a need for improvement. The current white LED obtained mainly through two ways, one is red, green, blue three colors of LED light distribution to be, which not only increases the cost and difficulty of design, color temperature drift is also not easy to overcome. Another is through the blue and yellow phosphor for mixing to achieve white light obtained in this way not only color temperature drift is small, light efficiency can be greatly improved. White LED on the market today are mostly obtained in this way. Because of this lack of white in color mixing red and green light when, in terms of color will be greatly reduced. Now the product available in the market can reach 80% of the color has been regarded as good.In terms of cost, at present although the pre-designed to reduce as much as possible, but the average consumer is still difficult to accept. The overall cost of LED lamps, only accounted for 70% of the light on. One can imagine that in order to reduce costs, we must start from the light source. However, the existing light sources, such as pricing power rests in the CREE, LUMILED, NICHIA, LUXEN, ORSMO other international giants in the hands, the price is bound to be a slow process.Technological backwardness as a "short board" more living downstream industry chain enterprisesOn the surface, LED lighting industry was in full swing, however, hidden behind the prosperity, also will be surfaced.LED lighting market is like a big "cake", attracted people to come Octagon Stock Watch. However, many people just want to fish in troubled waters, and some are just to short-term profit. As the world's largest lighting market, upper and middle reaches of China's LED technology has become a weak link flawed. "2010 High-Brightness LED Market Review and Outlook" report that in 2010 China LED manufacturers of high-brightness LED market share of global GDP ratio of only 2%, and the related technology still lags behind international companies about three to five years. LED chip and device products in China are mostly concentrated in the low-power, medium and low areas. Although the price of domestic chip chip imports only 1 / 10, but less than 10% domestic market share. In addition, the high brightness power LED chips, components are more than 80% dependent on imports. MOCVD epitaxial production of key equipment and wafer substrate, high-performance package with silicone, epoxy, phosphor and other basic raw materials have to rely on imports.
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