PROBLEM TO BE SOLVED: To provide a light source device for an endoscope which can supply stable illumination light with fewer fluctuations of light quantity to an endoscope by simple control, and an endoscope system using the same.SOLUTION: A green semiconductor light source 36 is a fluorescence type semiconductor light source comprising excitation light LD80 emitting blue excitation light LBe and a rotation plate 82 having a green fluorescence body 81 formed on a surface for emitting green fluorescent light LGf by being excited by the blue excitation light LBe. A data generation part 110 generates light quantity fluctuation data of the green fluorescent light LGf that results from the rotations of the rotation plate 82 and further generates light quantity correction data that is a waveform of a reverse phase of the light quantity fluctuation data. A light source control part 46 fluctuates a drive current value imparted to the excitation light LD80 in accordance with the light quantity correction data for correcting the fluctuations of light quantity of the green fluorescent light LGf. In addition, the light source control part 46 makes a dimming control part 43 perform exposure control for keeping brightness of a display image constant.COPYRIGHT: (C)2015,JPO&INPIT【課題】簡単な制御で光量変動の少ない安定した照明光を内視鏡に供給することができる内視鏡用光源装置、およびこれを用いた内視鏡システムを提供する。【解決手段】緑色半導体光源36は、青色励起光LBeを発する励起光LD80、および青色励起光LBeで励起されて緑色蛍光LGfを発する緑色蛍光体81が表面に形成された回転板82とで構成された蛍光型半導体光源である。データ生成部110は、回転板82の回転に起因する緑色蛍光LGfの光量変動データを生成し、さらに光量変動データの逆位相の波形である光量補正データを生成する。光源制御部46は、光量補正データにしたがって励起光LD80に与える駆動電流値を変動させ、緑色蛍光LGfの光量変動を補正する。また、光源制御部46は、表示画像の明るさを一定に保つための露出制御を調光部43に行わせる。【選択図】図25
