the best led grow lights here-------> www.novaledlights.com
And existing incandescent, fluorescent, energy saving lamps, halogen lamps and high pressure sodium compared, LED light source with 6 big obvious advantages, including: long life (life of up to 50,000 to 100,000 hours, compared to traditional light source life more than 10 times longer), energy saving (the same illumination energy than traditional light sources over 80%), application easy to use, low cost, robust and environmentally friendly (no radiation, waste recycling, not mercury element), which makes It stresses energy saving in today's economic situation has become a very attractive option.
U.S. Department of Energy states: the energy consumed by lighting the United States accounted for 22% of annual energy production. Widespread use of LED lighting will decrease the energy consumption of 50%.(
3W LED Grow Light) If the objective in mind, then by 2027, LED lighting is to achieve annual energy consumption reductions will be equivalent to 5 billion barrels of oil, while also reducing carbon dioxide emissions.
Personally believe that the long term, LED lighting will certainly dominate the world. In fact, LED lighting family has been in the recent lighting market has been rapid development. According to Osram Optical Semiconductor survey in 2008, global annual shipments of household lighting lamp has reached 50 billion or so.
Some industry experts believe, LED green lighting the mass market and a steady growth in demand will trigger IC industry following the VCD, DVD, mobile phones, MP3 after the consumer electronics market, has a super tsunami! Market research firm iSuppli also forecasts LED lighting market in 2009 from 70 billion dollars in 2011 to 90 billion, including ultra-high brightness LED lighting market is the fastest growing market segments. This indicated that the next few years, a large backlit screen LCDHDTV lighting, highway lighting, key lighting, and construction sites will be the rapid development of the lighting market.
LED light source technology has matured, the rapid growth of lumens per watt LED, high power LED light output has achieved an important milestone of 100 lumens / watt, and some manufacturers even claim that the LED's light output to reach 120 lm / W . This means that, in terms of the energy efficiency, LED has now gone beyond the energy-saving lamp CFL (light output of 80 lumens / watt). Experts predict that by 2012, LED's light output to reach 150 lumens / watt.
LED current price of their entry into a major obstacle to the mass consumer market, but the recent decline in the cost of LED very quickly. To 1WLED light source, for example, the spring of 2008, the price is the price of one-third of the spring of 2006, Spring 2009 has been reduced to one quarter of 2006. Polybrite Corporation (a leading provider of LED lighting products) also said in the past 12 months, individual white LED prices have dropped to 1.50 from 8 U.S. dollars. And predicted in 2009, replacing incandescent bulbs with LED's price will be accepted by consumers.
They said is true. According to my understanding, the last LED expensive mainly due to patent most of its manufacturing firms in Japan in the hands of control, but they are also unwilling to license the manufacture of foreign patents, leading supplier of LED has only a handful of a few. However, these patent expiry date on this year, once spent, I believe the Chinese mainland and Taiwan will soon emerge countless home LED manufacturers, LED down further rapid price.
From the application point of view, less than 25W of LED lighting applications will gradually penetrate into portable handheld products (such as PMP, and MID), reading lamps, dining lights, bedside lamps, marker lamps, identification lamps, decorative lights, grid lamps , car taillights, car beam lamps, auto turn lights, and even automotive infotainment display. 25W-100W of LED lighting applications in automotive headlamps, office lighting and architectural lighting applications found useless. LED lighting applications above 100W in large-screen LCD-TV, highway, large square, TV wall, and industrial lighting is widely popular.
It must be noted is that LED lighting products designed to make driver IC must be working at full capacity output of 70-90% of the best work area. Using the full load output current driver IC will be small because space cooling in poor lighting, LED lighting and easily lead to fatigue and early failure occurred.
In addition to other thermal management challenges, the system designer will encounter three major design challenge is how to keep more than 80% of the overall power conversion efficiency, flicker-free dimming to prevent the LED's color cast.