High-powered LED lamps are rather important solutions to achieve high output luminance, which has various advantages and merits. However, how to use them reasonably and how to optimize their working conditions two key points to the high-powered LED lighting industry. In the mean time, this article will also take some comparisons between high-powered LED lamps and traditional light sources and also discuss about corresponding LED lighting applications with high luminous flux.
Within the past 20 years, the development of LED technology followed the laws of “Haitz”. The output luminance (brightness) increased by 30 times but the price dropped by 10 times in every 10 years. The output luminance of general white-ray LEDs has reached up to 100lm/W (lab data), and high-powered white-ray LEDs (50lm/W) finished the commercialization. In the aspect of monochromatic light, the luminous efficiency record of red/yellow/blue/green rays were continuously refreshed. As new light source, G24 LED has been widely used in multiple areas, and gradually attracted more attention and expectations from consumers.
The current distribution of LED applications was diversified in various industries, including indicators, display, backlight, general lighting and so on. Among them, general lighting is the most promising market. With the constant increase of LED luminous efficiency and decline of the production cost, LED will continue its occupation in the market. China set up a National a semiconductor lighting project group in 2003, aiming to consolidate resources and rapidly advance the LED lighting market. According to the forecast of Lianghui Chen, academician of Chinese Academy of Engineering, from 2005-2015, the semiconductor lighting save approximately 400 billion kWh (totally 260 billion yuan in electricity charges) for users, creating a production value of 150 billion yuan.
In the lighting industry, compared high-powered LED lamps with traditional light sources, certain features of the former have incomparable advantages: a. high energy efficiency: LED with luminous efficiency of 75lm/W can save around 80% electricity compared with incandescent lights with the same brightness; b. long service life: the average lifetime of LED products is 50,000 hours, which enable them to be continuously used for 7 years; c. flexible in brightness control and color adjustment: can realize the constant adjustment in brightness and color, high purity, no distortion and digital control; d. flexible dimensions: can realize the organic integration with buildings. e. environmental friendly: no harmful metal mercury, infrared and ultraviolet radiation.