The endoscope system of this invention, with sensing station and the direct-vision range of vision image and the side apparent range of vision image which acquire the specified detection result on the basis of light equipment and the specified output signal or the information of specified output which supply the illumination light in order to illuminate the endoscope and observation target ones which acquire the direct-vision range of vision image and the side apparent range of vision image of observation target ones generating the image signal which is possessed inside the identical scope, to detect with the image processing section and the luminosity of the direct-vision range of vision image and the luminosity of the side apparent range of vision image which it outputs individually, on the basis of the specified detection result the direct-vision range of vision imageAnd it chooses the range of vision image of one side among the side apparent range of vision images as the modulated light target, in order to reach to the specified luminosity set point to which the range of vision image of the said one side is suited for observation, the modulated light area choice section which does the control for light equipment and, it possesses.本発明の内視鏡システムは、観察対象物の直視視野画像及び側視視野画像を取得する内視鏡と、観察対象物を照明するための照明光を供給する光源装置と、所定の出力信号または所定の出力情報に基づいて所定の検出結果を取得する検出部と、直視視野画像と側視視野画像とを同一の画面内に具備する映像信号を生成して出力する画像処理部と、直視視野画像の明るさと側視視野画像の明るさとを個別に検出し、所定の検出結果に基づいて直視視野画像及び側視視野画像のうちの一方の視野画像を調光対象として選択し、該一方の視野画像が観察に適した所定の明るさ目標値に達するように光源装置に対する制御を行う調光エリア選択部と、を有する。
