PROBLEM TO BE SOLVED: To provide an electronic endoscope apparatus and spectral image optimization method for acquiring an accurate spectral image by band limiting light of a desired wavelength band.SOLUTION: The electronic endoscope apparatus includes: a wavelength filter unit which is provided with a pair of transmission substrates where reflection films are formed on the mutually facing surfaces, and a drive unit for changing the wavelength band of light transmitting through the pair of transmission substrates by moving the one transmission substrate to change an interval between the pair of transmission substrates, and also which filters white light from a light source device, made incident on one of the pair of transmission substrates and emits the band limiting light with a predetermined wavelength a wavelength distribution detector for receiving a part of the light emitted or reflected by the wavelength filter unit and detecting wavelength distribution of the band limiting light an optimization unit for optimizing the movement amount of the one transmission substrate thereby to make the wavelength distribution of the band limiting light be predetermined wavelength distribution and a controller for controlling the drive unit, on the basis of the movement amount optimized by the optimization unit.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な分光画像を取得可能な電子内視鏡装置及び分光画像最適化方法を提供する。【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一対の透過基板と、一方の透過基板を移動させて該一対の透過基板間の間隔を変更することによって該一対の透過基板を通過する光の波長帯域を変更する駆動手段とを備え、一対の透過基板の一方に入射される光源装置からの白色光をフィルタリングして所定波長の帯域制限光を出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出射又は反射される光の一部を受光し帯域制限光の波長分布を検出する波長分布検出手段と、帯域制限光の波長分布が所定の波長分布となるように一方の透過基板の移動量を最適化する最適化手段と、最適化手段によって最適化された移動量に基づいて駆動手段を制御するコントローラとを有する。【選択図】 図6
