What is Light Emitting Diode?

Find out how the work of H. J. Round on luminous semiconductors at the beginning of the XXᵉ century revolutionized the lighting

LED is the acronym of the English light-emitting diode. A LED is an electronic component, an led that lights up when it is crossed by the electric current. In french, we talk about light-emitting diode (led).

Filed the first patent for a semiconductor transmitter of light in 1927. Initially, the LED emitted that color (red, yellow, green) lights. It took 90 years and the work of Shuji Nakamura, Isamu Akasaki and Hiroshi Amano to discover the blue LEDs which, coupled with yellow LEDs, led to white light. The three researchers were also rewarded year last by the Nobel Prize for Physics for their work on the blue LEDs.

The LED now produce the desired light temperature: cold, white or yellow and hot as well as the intermediary. The RGB LED of color to produce red, blue green through the entire spectrum.

LEDs come in ribbons as above or in isolated components, but still much smaller than other lamps, so that they allow to make unexpected bright creations so far. We can truly talk about renewal of the bright design.

Unlike light bulbs (Edison bulbs defined on INTERNETDICT), the LEDs are cold and burn so more insects that they attract. Therefore, you can also place without fear in closed storefronts.

They have also bright performance lamps incandescent and CFLs, say to energy savings. On this last point, LEDs are also champions of the minimum current consumption. And also the longevity: an always on incandescent bulb lasts about 40 days, while an LED in the same conditions can illuminate 2,000 days. For all these advantages, LEDs are poised to dethrone the other lighting technology as their price drops gradually.

At the beginning of their appearance on the market, it used LEDs to light the road signs and signals: for example cinemas were equipped on the ground of a red path dotted to mark the aisles in the dark.

Today, LEDs have reinvented the lighting. We team baseboards, ceilings, furniture back. Indirect lighting that elegantly underlines the architecture was born.

Thanks to these components of extreme subtlety, the creation of luminaires is turned upside down for our greatest happiness to lovers of design. Here is what may look like the XXIᵉ century thanks to the LED desk lamp. If the invention of electricity changed our lifestyle, that led sublime how to use it.

As LEDs diffuse light to very low voltage, other amazing uses also appeared as the rain sky lighting in the shower or some faucets.

Thanks to this quality, many lamps on batteries with a light white, color or even changing, have also emerged as this pool ball that illuminates the pool of a magical glow at night. Wreaths also have the wind in its sails and campers also enjoy led flashlights.

The exteriors also benefit the LED revolution. Because this light is very little energy, we no longer hesitate to make grandiose luminous creations to the garden. You will have noticed that the LEDs have invested all dedicated to Christmas and brought beauty lighting: just to attend the lighting of the Champs-Elysees to be convinced.

Discover how to enhance your home with lights

Gallery

What is LED? How LED works?

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