PROBLEM TO BE SOLVED: To provide an endoscope with a ranging function, of which the degradation of ranging precision is suppressed.SOLUTION: The endoscope with a ranging function includes: distance measuring means 23 including a light source 23a which emits light at a wavelength different from that of illuminating light for observation, an optical path dividing member 23b which divides the light from the light source into a signal optical path S1 and a reference optical path R1 and combines return light of signal light and return light of reference light, a mirror 23c provided on the reference optical path, a photodetector 23e which detects return light of combined signal light and reference light, and a distance detection part 23f which detects a distance of a measurement object 9 in individual scanning ranges on the basis of prescribed information obtained at the time of detection of return light of signal light and reference light an optical scanning fiber 14 provided on the signal optical path an optical scanning part 15 and a spot light generation part 16. A reflecting part 15 is provided in a part of a scanning range of the optical scanning part in the vicinity of a front end of the optical scanning fiber.COPYRIGHT: (C)2013,JPO&INPIT【課題】測距精度の劣化を抑制する測距機能付内視鏡を提供する。【解決手段】観察用照明光とは異なる波長の光を出射する光源23aと、光源からの光を信号光路S1と参照光路R1とに分割するとともに、信号光の戻り光と参照光の戻り光とを合成する光路分割部材23bと、参照光路上に設けられたミラー23cと、合成された信号光と参照光との戻り光を検出する光検出器23eと、信号光と参照光の戻り光の検出に際して得られる所定情報に基づいて、個々の走査範囲における計測対象9の距離を検出する距離検出部23fを有する距離計測手段23と、信号光路上に設けられた光走査型ファイバ14と、光走査部15と、スポット光生成部16を備えた測距機能付内視鏡であって、光走査型ファイバの先端近傍における光走査部の走査範囲の一部に反射部15を設ける。【選択図】図2
