The present invention makes the assembly and adjustment of centering an optical fiber with respect to an illuminating optical system easy and highly precise. Provided is an optical fiber scanner (10) equipped with: an illuminating optical fiber (11) an oscillating transmitter (21) into which the base end of the illuminating optical fiber (11) is fitted multiple piezoelectric elements (23) that are fixed on the oscillating transmitter (21) and are for oscillating the illuminating optical fiber (11) and a fixed part (25) into which the oscillating transmitter fits at a position shifted toward the base end with respect to the piezoelectric elements (23) of the oscillating transmitter (21) and which is capable of supporting the illuminating optical fiber (11) in a cantilevered fashion via the oscillating transmitter (21). The oscillating transmitter (21) comprises: a columnar part (33), which has a through hole into which the illuminating optical fiber (11) can be inserted and which is obtained from an elastic material on which the multiple piezoelectric elements (23) are bonded and a tip part (35), which is disposed on the front end of the columnar part (33) to support the illuminating optical fiber (11) in a fitted state and which has a shape of a solid of revolution, the radial direction cross-sectional area of which gradually decreases towards the tip of the illuminating optical fiber (11).La présente invention facilite lassemblage et lajustement du centrage dune fibre optique par rapport à un système optique déclairage et en augmente la précision. Linvention concerne un dispositif de balayage à fibre optique (10) équipé de : une fibre optique déclairage (11) un émetteur oscillant (21) dans lequel lextrémité de base de la fibre optique déclairage (11) est ajustée de multiples éléments piézoélectriques (23) qui sont fixés sur lémetteur oscillant et (21) servent à faire osciller la fibre optique déclairage (11) et une partie fixe (25) dans laquelle lémetteur oscill
