Problem to be solved: to provide an endoscope light source apparatus capable of stably obtaining illumination light having a target emission spectrum in a simple control even when a fluorescent semiconductor light source is used.A plurality of semiconductor light sources comprise an excitation light emitting element emitting excitation light and a phosphor semiconductor light source that emits fluorescence that is excited by the excitation light and contains at least one wavelength band of the green or red wavelength band included in the illumination light.The excitation light cut filter cuts excitation light.The optical path integrated optical member integrates the optical path through which the fluorescent light passes and the optical path through which light emitted by the semiconductor light source other than the fluorescent semiconductor light source passes.The light source controller 42 controls the power supplied to each of the semiconductor light sources.Diagram【課題】蛍光型半導体光源を使用した場合でも、目標とする発光スペクトルをもつ照明光を、簡単な制御で安定して得ることができる内視鏡用光源装置を提供する。【解決手段】複数の半導体光源は、励起光を発する励起光発光素子、および前記励起光で励起されて、前記照明光に含まれる緑色または赤色の波長帯域のうちの少なくとも１つの波長帯域を含む蛍光を発する蛍光体型半導体光源を備える。励起光カットフィルタは励起光をカットする。光路統合用光学部材は、蛍光が通る光路と、蛍光型半導体光源以外の半導体光源が発する光が通る光路とを統合する。光源制御部４２は、半導体光源のそれぞれへの供給電力を制御する。【選択図】図３
