A single fiber-optic can light up computer screens. This innovation put in place by a spin-off, brings energy savings of 30% while boosting processors. "Slim as a hair, powerful as 100 LEDs": the advantages of this technology have the allure of a slogan. "Currently, half the consumption of energy in laptops is connected to the screen and particularly its lighting," explains Yann Tissot, the founder of the company L.E.S.S. (Light Efficient SystemS). Transporting light through fiber-optics, as this newly created start-up wishes to do, permits the reduction of energy use by more than 30%. Laptop screens are composed of different filters for colors and of a source of white light situated in the lower portion of the frame. With LED, which is currently used, 60% of the light remains trapped inside these diodes and accounts for a significant loss in efficiency. The fiber optics developed by L.E.S.S. could bring just as much luminosity and contrast while conserving a quarter of the energy. "That liberated power could be used by the processor to gain speed," adds the entrepreneur. The fiber-optic resembles a simple wire of several microns in diameter, primarily composed of glass. Its secrete resides inside: a nanostructure permits the generation and guidance of white light to illuminate the screen in a uniform and efficient manner. But how does this system compare to organic light-emitting diodes (Oled), a new technology for flatscreens that doesn't require a source of light?
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