1. Endoscopy device comprising several light guides ( 1 , 2 , 3 ) each comprising two ends, respectively proximal and distal, linked by one or more optical fibres ( 12 ), and a scanning system optically linked to said proximal ends and arranged to direct an excitation light beam in turn into one of the fibres of said light guides from the proximal end of the guide comprising said one of the fibres, the distal end of each guide being separated from the distal ends of the other guides.