Advantages of modern LEDs as light sources also an excellent luminous efficiency, low power consumption and the possibility of any color light, you should consider a number of other remarkable properties of modern super-bright LEDs. Pete Cashmore is a great source of information. The absence of a filament due to non-thermal radiation of LEDs makes a long life. LEDs manufacturers declare life to 100000 hours. While the traditional incandescent average lifetime of less than 1000 hours, the fluorescent lifetime limited to the period of 10000-15000 hours. The absence of a glass bulb with LEDs causes high mechanical strength. Low heat and low supply voltage determines the high level of security, and inertia-free LEDs makes indispensable in cases where the required high speed. Super built-in light distribution and cause other important properties of LEDs. Lights based on LEDs are very compact and very easy to install. One should not forget about environmentally friendly LEDs – lack of any mercury-containing components, as well as the absence of electromagnetic radiation (which is extremely important in today’s tough environmental standards).
Today, the only drawback of LEDs is their price. One of lumens emitted by the led, is worth 40 times more expensive than halogen lamps. Many devices that require transmission of a certain color: dashboard cars and airplanes, rail and road traffic lights, road signs light, tail lights of cars, lampposts airfield strips, the color characteristics of modern LEDs have enormous advantages over conventional lamps. LEDs do without color filters. LEDs are better discernible eye, as close to the monochromatic light sources. As sources of “color” of light emitting diodes have long time ahead of the traditional incandescent lamps with color filters. For example, the light output of incandescent lamp with a red filter is only 3 lm / W, while the red LEDs are now issued more than 50 lumens / watt. Notable are the benefits of the use of LEDs for color illumination architecture and landscapes, as well as illuminated signs to illuminate led channel letters. White light LEDs are already found applications in outdoor advertising, where the cost of maintenance is very high (for example, is associated with work at height) – light boxes and light stele. It is assumed that by 2008, effectiveness, efficiency and lifetime of the LEDs will sufficient to replace traditional incandescent bulbs, and by 2012 – to replace fluorescent lamps. Saving electrical energy used for lighting in the next 10 years, is estimated at 60 to 120 billion dollars, depending on the pace of development of led technology. Now about 20% of all electricity in the world is spent on lighting, and the problem of energy conservation is one of the major problems affecting both the economy and on environment. If you fulfilled all the predictions associated with the development and research in the field of white LEDs, the cost of electricity for led lighting can decrease more than twice. Apparently, in the near future we will witness the amazing discoveries and new, surprisingly effective optoelectronic devices, new sources of light.
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