PROBLEM TO BE SOLVED: To provide an endoscope apparatus capable of detecting damage on a light guide section of an endoscope certainly and easily.SOLUTION: A control section 13 of the endoscope apparatus 100 includes: a light source 45 that emits a light to be supplied to a distal end 35 of the endoscope 11 a luminescence amount detecting section 51 that detects a portion of the light emitted from the light source 45 a return light detecting section 47 that detects a portion of a return light returning from an optical fiber 45A out of lights which enters the optical fiber 45A of the endoscope 11 from the light source 45 and is transmitted to the distal end 35 and a controller 73 that calculates a ratio of luminescence loss that is the ratio between light quantity information of the light detected by the luminescence amount detection section 51 and light quantity information of the return light detected by the return light detecting section 47, and determines whether there is damage in the optical fiber 45A of the endoscope 11 based on change in the calculated luminescence loss.COPYRIGHT: (C)2012,JPO&INPIT【課題】内視鏡の導光部の損傷を確実かつ容易に検出することが可能な内視鏡装置を提供する。【解決手段】内視鏡装置100の制御装置13は、内視鏡11の先端部35に供給する光を出射する光源45と、光源45から出射される光の一部を検出する発光量検出部51と、光源45から内視鏡11の光ファイバ45Aに入射されて先端部35まで伝送される光のうち、光ファイバ45Aから戻ってくる戻り光の一部を検出する戻り光検出部47と、発光量検出部51にて検出された光の光量情報と、戻り光検出部47によって検出された戻り光の光量情報との比である発光損失比を算出し、算出した発光損失比の変化に基づいて、内視鏡11の光ファイバ45Aに損傷があるか否かを判定する制御部73とを備える。【選択図】図2
