To provide an illumination device capable of highly accurately controlling a target light amount without losing a balance of emitted light amount ratio ratios of a plurality of semiconductor light sources and an endoscope apparatus including the same.SOLUTION: The illumination device comprises a plurality of semiconductor light sources for emitting lights of mutually different spectra, target light quantity setting means for setting a target light quantity with respect to the total emitted light quantity, a light quantity ratio for setting the ratio of emitted light quantity of the plurality of semiconductor light sources An amplitude value setting means for setting amplitude values of drive signals for the respective semiconductor light sources on the basis of the set output light amount ratio, amplitude value setting means for setting each of the drive signals to the set amplitude value, And drive signal generating means for generating by means of common pulse modulation control. When the target light quantity is set, a drive pulse signal corresponding to the target light quantity is set commonly to each semiconductor light source, and this drive pulse signal is set to an amplitude value according to the emitted light quantity ratio to drive individual semiconductor light sources A signal is generated.BACKGROUND OF THE INVENTION【課題】複数の半導体光源の出射光量比のバランスを崩すことなく、目標光量に高精度に制御することができる照明装置及びこれを備えた内視鏡装置を提供する。【解決手段】照明装置は、互いに異なるスペクトルの光を出射する複数の半導体光源と、全出射光量に対する目標光量を設定する目標光量設定手段と、複数の半導体光源の出射光量比を設定する光量比設定手段と、設定された出射光量比に基づいて各半導体光源に対する駆動信号の振幅値をそれぞれ設定する振幅値設定手段と、各駆動信号を、設定された振幅値に保持しつつ目標光量に応じた共通のパルス変調制御により生成する駆動信号生成手段とを有する。目標光量が設定されると、その目標光量に応じた駆動パルス信号が各半導体光源に共通に設定され、この駆動パルス信号を出射光量比に応じた振幅値にして各半導体光源を駆動する個別駆動信号が生成される。【選択図】図1
