PROBLEM TO BE SOLVED: To shorten a tip end hard part of a probe.SOLUTION: Provided is an optical fiber scanner 10, which comprises: an elongated optical fiber 1 for guiding light and projecting the light from a tip end a columnar vibration transmission member 2 longitudinally formed and having through holes 5, 6 through which the optical fiber 1 passes and piezoelectric elements 3A, 3B, 3C, 3D arranged on an outer peripheral surface of the vibration transmission member 2, and generating bending vibration in a direction longitudinally crossing the vibration transmission member 2 by stretch-vibrating in a longitudinal direction of the optical fiber 1 upon application of an alternating voltage. Through holes 5, 6 include: a fitting hole 5 which is formed longitudinally from a base end surface of the vibration transmission member 2 up to a middle position, and which fits into the outer peripheral surface of the optical fiber 1 and a receiving hole 6 which is formed from a middle position of the vibration transmission member 2 up to a tip end surface, and which has an inner diameter larger than an outer diameter of the optical fiber 1, thus forming a gap between the vibration transmission member and the outer peripheral surface of the optical fiber 1 to receive a tip end part of the optical fiber 1.COPYRIGHT: (C)2015,JPO&INPIT【課題】プローブの先端硬質部の短縮を図る。【解決手段】光を導光して先端から射出可能な細長い光ファイバ1と、長手方向に形成され光ファイバ1が貫通する貫通穴5,6を有する柱状の振動伝達部材2と、該振動伝達部材2の外周面に設けられ、交番電圧の印加によって光ファイバ1の長手方向に伸縮振動することにより振動伝達部材2に長手方向に交差する方向の屈曲振動を発生させる圧電素子3A,3B,3C,3Dとを備え、貫通穴5,6が、振動伝達部材2の基端面から長手方向の途中位置まで形成され、光ファイバ1の外周面に嵌合する嵌合穴5と、振動伝達部材2の途中位置から先端面まで形成され、光ファイバ1の外径よりも大きな内径を有し、光ファイバ1の外周面との間に間隔を空けて該光ファイバ1の先端部分を収容する収容穴6とからなる光ファイバスキャナ10を提供する。【選択図】図1
