Light-emitting device and use thereof

摘要

A light-emitting device comprises a light source in the form of a preferably incandescent filament (8), a substantial part of which is integrated in a host element (7') having at least one portion (10) structured according to nanometric dimensions. The nano-structured portion (10) is in the form of e.g. a photonic crystal or of a Bragg grating, for the purpose of obtaining an amplified or increased emission of radiation in the region of the visible.