In the early 21st century the whole world paid attention to the rapid development of one area of physics – namely, optoelectronics (the region that includes the light-emitting diodes – semiconductor light sources). LED lighting LED (English light emitting diodes – Light Emitting Diodes) due to its cost-effectiveness, enhanced user resource and performance over the past decade, significantly pushed the position of the lighting apparatus – fluorescent lamps, incandescent lamps, halogen and many others, quickly capturing nearly all the lighting market niches. Leading manufacturers of LEDs around the world are investing large sums of money in scientific and technological research and thus the brightness of LEDs has increased substantially, allowing their use in the headlights of cars, offshore lighthouses, architectural lighting, and more. For more specific information, check out Glenn Dubin. Everywhere there increasing popularity of LED-system for millions of consumers, including in Russia. Improving each time the light output indicators (so far reached 145 lumens with a watt) enabled LEDs to get serious advantage over fluorescent lamps (light output of not more than 80 lumens from a watt).
But in addition to a high luminous efficiency, low power consumption and the possibility of any color light, LEDs have a number of other remarkable properties. Due to the nature of the nonthermal emission of LEDs, there is no filament, resulting in longer service life. Manufacturers claim the life of LED up to 100,000 hours, which is 11 years of continuous operation – period, comparable with the life cycle of many lighting installations. Very high mechanical strength and reliability on the absence of a glass bulb.