PROBLEM TO BE SOLVED: To provide an electronic endoscope apparatus for acquiring an accurate and bright spectral image by the band-limiting light of a desired wavelength band.SOLUTION: The electronic endoscope apparatus includes: a wavelength filter unit which is provided with first and second transmission substrates where reflection films are formed on the mutually facing surfaces, and a drive unit for moving the first transmission substrate with respect to the second transmission substrate thereby to change an interval between the transmission substrates, and also which filters white light to be made incident on the first transmission substrate from a light source device thereby to make the band limiting light with a predetermined wavelength corresponding to the interval between the transmission substrates be transmitted in the direction opposite to the light source device, and reflects the light with a wavelength other than that of the band limiting light in the direction of the light source device and a wavelength distribution detector for receiving a part of the reflection light to be reflected against the wavelength filter unit and detecting the wavelength distribution of the light with the wavelength other than that of the band limiting light and a controller for controlling the drive unit to make the band limiting light have predetermined wavelength distribution, based on the wavelength distribution of the light with the wavelength other than that of the band limiting light, which is detected by the wavelength distribution detector.COPYRIGHT: (C)2013,JPO&INPIT【課題】所望の波長帯域の帯域制限光による正確で且つ明るい分光画像を取得可能な電子内視鏡装置を提供する。【解決手段】電子内視鏡装置が、互いに対向する面部に反射膜が形成された第1及び第2の透過基板と、第1の透過基板を第2の透過基板に対して移動させ透過基板間の間隔を変更する駆動手段とを備え、光源装置から第1の透過基板に入射される白色光をフィルタリングして透過基板間の間隔に応じた所定波長の帯域制限光を光源装置と反対の方向に透過させると共に、帯域制限光以外の波長の光を光源装置の方向に反射する波長フィルタユニットと、波長フィルタユニットから反射される反射光の一部を受光し、帯域制限光以外の波長の光の波長分布を検出する波長分布検出手段と、波長分布検出手段によって検出された帯域制限光以外の波長の光の波長分布に基づいて帯域制限光が所定の波長分布となるように駆動手段を制御するコントローラとを有する。【選択図】 図2
