PROBLEM TO BE SOLVED: To provide a light source device capable of suppressing an influence on a color rendering property of picked-up images by decline of a light quantity due to heat generation of a phosphor and obtaining the picked-up images with an excellent color rendering property and a stable shade, and an endoscope apparatus using the light source device.SOLUTION: An endoscope light source device includes: a first light source part which has a semiconductor laser light source for emitting first narrow band light of a first wavelength band and the phosphor excited by the laser beam of the first wavelength band to emit fluorescence of a visible region other than the first wavelength band, and emits wide band light a second light source part which has a semiconductor light source for emitting second narrow band light of a second wavelength band included in the wavelength band of the fluorescence and a light source control part which has a first drive control part for controlling the drive and emission light quantity of the semiconductor laser light source of the first light source part and a second drive control part for controlling the drive and emission light quantity of the semiconductor light source of the second light source part. The second drive control part controls the drive and emission light quantity of the semiconductor light source of the second light source part according to the secular change of the light quantity of the second wavelength band of the fluorescence.COPYRIGHT: (C)2012,JPO&INPIT【課題】蛍光体の発熱による光量の低下が撮像画像の演色性に与える影響を抑え、演色性の良い、色味の安定した撮像画像を得ることができる光源装置及びそれを用いる内視鏡装置を提供する。【解決手段】第1の波長帯域の第1の狭帯域光を出射する半導体レーザ光源、及び第1の波長帯域のレーザ光によって励起され、第1の波長帯域以外の可視領域の蛍光を発光する蛍光体を備え、広帯域光を出射する第1の光源部と、蛍光の波長帯域に含まれる第2の波長帯域の第2の狭帯域光を出射する半導体光源を備える第2の光源部と、第1の光源部の半導体レーザ光源の駆動及び出射光量を制御する第1駆動制御部ならびに第2の光源部の半導体光源の駆動及び出射光量を制御する第2駆動制御部を備える光源制御部と、を有し、第2駆動制御部は、蛍光の第2の波長帯域の光量の経時変化に応じて、第2の光源部の半導体光源の駆動及び出射光量を制御することで、上記課題を解決する。【選択図】図2
