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New generation LEDs

New generation LEDs



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Used for a long time in electronics, light-emitting diodes could well replace traditional filament bulbs. They advertise a possible lifespan of 50,000 hours even if for the moment they do not allow to diffuse a light powerful enough for everyday lighting. As the magazine reports Sciences and Future in the dossier of its June issue devoted to new generation bulbs, the research laboratories, including the Light Cluster in Lyon, are working to obtain white light by mixing several light shades as well as manufacturing LEDs in more economical materials such as pure silicon or zinc oxide. Ultimately, organic diodes less than 1mm thick should emerge. Pending the arrival of high-performance diodes on the market, two heirs are fighting over the succession of the traditional filament bulb, halogen lamps and compact fluorescent lamps. However, between the experiments and the implementation on the market of the products, the period is sometimes too short to guarantee a valid expertise.

Halogen lamps

Already installed on the market, this technology is being perfected. Gas atoms recover tungsten atoms torn off by an electric current, thus producing light. This technology ensures them a long lifespan between 30,000 to 40,000 hours (compared to 1,000 for an incandescent lamp). The absence of legislation before 2010 allows them to be labeled "energy efficient" even if the large amount of heat they emit does not justify such a designation.

Compact fluorescent lamps

Wrongly called "neon", they make visible UV light by projecting it through a wall covered with fluorescent powder. These lamps have a lifespan of 6,000 to 12,000 hours and produce less heat than a halogen bulb. There are many models of this type on the market, but legislation is almost non-existent. Many labels are therefore misleading and advertise erroneous performance. Another point of controversy, these bulbs contain mercury, a poison which must be recycled. Finally, the electromagnetic fields they give off are subject to controversy.

Light emitting diodes

If they have not yet found their place as a real source of lighting in the house, their use in decorative lighting is in full swing. They diffuse bright colors, more decorative than functional. Pending the definitive disappearance of our current bulbs planned by the European calendar and the appearance of clear standards, you can consult the guide "topten" of the most environmentally friendly products implemented by WWF and L'Ademe. www.guide-topten.com

Important dates in the calendar for the removal of incandescent bulbs:


-June 30, 2009 : withdrawal from sale in France of conventional incandescent bulbs -September 1, 2009 : This measure applies to other countries of the union -December 31, 2009 : withdrawal in France of classic incandescent lamps from 75W-September 1, 2010 : Clear halogen lamps of 60W are prohibited in Europe as well as conventional incandescent lamps of 60W -1st September 2011: 40W halogen lamps are prohibited -September 1, 2012 : 25W halogen lamps are in turn prohibited as well as conventional incandescent lamps-September 1, 2013 : ban on so-called unusual base lamps -1st September 2016 : Europe bans class C lamps