Historical review

LED lighting and energy saving

Facing the energy crisis that affects the entire planet, specialists and scientists began to find real solutions, based on new technologies.

One such example are the systems for lighting LEDs (Light-Emitting Diode), which in addition to reducing energy consumption, offer a high-efficiency lighting.

With this ideal formula: reduction of consumption + great light power, the lighting with technology LED, turns into the alternative source of energy of the future, which will allow to advance in the world aim(lens) to save energy and to stop the climatic changes.

Many countries around the world began to devise plans and campaigns for energy saving and efficient use of energy, using LED technology.

For example, several municipalities in Spain are installing new lights, which incorporate LED technology, saving up to 80% of energy in relation to the traditional system.

Reviewing the history of lighting, you can see three major technological revolutions, which marked major progress in this area.

In 1879, Thomas Alva Edison invented the incandescent lamp; device that produces light through the incandescence of a filament.

The process of incandescence is highly ineffective, for his low luminous performance(yield).     
The lifetime of such a lamp is about 1000 hours.

In 1901, Peter Cooper Hewitt introduced the mercury vapor lamp, with a design close to the fluorescent lamps used today. In 1926, Edmund Germ, Friedrich Meyer and Hans Scanner refined the design, and as on 1938, the General Electric Company, offered it to the market.

The lighting with technology of fluorescence, is achieved by means of the combustion of a gas by a very pollutant component of mercury.

Though the heat build-up for the fluorescent lamp is minor to that of the incandescent lamps, the efficiency still gets lost in the generation of the ultraviolet light and his conversion in visible light. His useful life is of approximately 10.000 hours(o'clock), 10 times more than the incandescent lamps.
 
In 1962, Nick Holonyak, invented the first light emitting diode (LED).  To obtain the lighting with technology LED (SSL of white light), it is necessary to group a certain quality of small LEDs of a tidy way, creating a unified girder. On not having contained any filament or pipe that could break, he presents a high permanence. His useful life is of approximately 50.000 at 100.000 hours. For the low consumption of energy and the low generation of heat in comparison with the traditional lamps, this device, appears as an interesting option, at the moment of thinking about a light source(fountain) that collaborates with the energetic saving and the care of the environment.

Prince of Asturias Awar

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