The improvement of LED light efficiency will reduce the cost of LED
At present, Cree, a major American manufacturer, is the most proud. The luminous efficiency of white LEDs has reached 186 lumens per watt. In the commercial product segment, customers have begun to provide customers with a total luminous flux of 239 lumens and a luminous efficiency per watt. 162 lumens product. As for Nichia, Nichia announced that it has successfully developed a low-power white LED chip with the highest luminous flux in the industry. The white LED released by Nichia has a luminous efficiency of 249 lumens per watt at a current of 20 mA. Nichia has always maintained a leading global position in the development of low-power LEDs, with a luminous efficiency of 150 lumens per watt and 169 lumens per watt, which has now reached 249 lumens per watt. Compared with other traditional light source technologies that have matured, LED luminous efficiency still has room for improvement. Based on the analysis of the technology development of various manufacturers at this stage, the luminous efficiency of LED monomers has the opportunity to increase to 188 lumens per watt, warm light part There is also a chance to achieve a performance of 138 lumens per watt. If the overall lighting efficiency of the luminaire is added, the chance of LED becoming general lighting has been relatively improved by then.
LED prices will decline rapidly. In addition, from the perspective of lighting costs, compared with fluorescent lamps, energy-saving lamps, incandescent bulbs and high-intensity gas discharge (HID), the unit cost of traditional light sources has no room for reduction compared with LED lamps. The cost of LED light sources ranging from 4,100 to 6,500K is estimated to be significantly reduced by more than 90%. Taking the US market as an example, according to the knowledge of the industry, LED lighting will be comparable to traditional light sources in terms of cost. If the luminous efficiency of LEDs is as estimated by the U.S. Energy Administration, the chances of cutting into different lighting locations are bound to increase. As for entering the indirect lighting or final main lighting market, in addition to the need to improve the technology of LED itself, the price drop, the improvement of lamp efficiency and the advantages of traditional light sources are all problems that LED lighting must face in the future. Since the development of LED lighting, some manufacturers have introduced LEDs with a luminous efficiency of more than 160 lumens per watt. If the current average luminaire efficiency is estimated to be 50~70%, the total efficiency of LED lighting fixtures is at least 180 lumens per watt. For accent lighting, or replacement of banned incandescent lamps, they are already qualified to enter the market. According to the analysis of the Optoelectronics Association (PIDA), LEDs will play the role of local lighting or key lighting at this stage. The time course of the lighting source.
