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LED, light-emitting diode

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LED, light-emitting diode (In French DEL diode électroluminescente) semiconductor light source which, depending on its design, can emit narrow to broadband wavelength ranges. Examples of applications: Imaging of photoconductive drums in digital printing systems, light source in spectral measuring devices as an alternative to the gas-filled light bulb, simulation of random illuminants in color-matching booths (patent: Just Normlicht), backlighting of LCD monitors and television sets.