PROBLEM TO BE SOLVED: To provide a light source device of a medical instrument which permits good observation images to be always obtained by precisely generating a necessary and sufficient light quantity of lighting light by a simple structure and to provide an endoscope.SOLUTION: The light source device of a medical instrument includes: a light source section having a plurality of light-emitting elements having different rated light quantities and a light source driving section generating a driving signal to each of the light emitting elements and driving the light emitting elements. The light source driving section is designed to drive the light emitting elements having a low rated light quantity from among the light emitting elements by a driving signal to compensate for an emitted light quantity from the light source section. When the light source section has high brightness light emitting element LEDs (L) having a first rated light quantity and low brightness light emitting element LEDs (S) having a second rated light quantity lower than the former, upon a decrease in the emitted light quantity of the high brightness emitting elements, the light source driving section obtains a light quantity decrease of the high brightness light emitting elements and makes the low brightness light emitting elements emit a light quantity compensating for the light quantity decrease.COPYRIGHT: (C)2013,JPO&INPIT【課題】必要十分な光量の照明光を簡単な構成で高精度に生成し、常に良好な観察画像が得られる医療用機器の光源装置、及び内視鏡装置を提供する。【解決手段】医療用機器の光源装置は、定格光量の異なる複数の発光素子を有する光源部と、複数の発光素子への駆動信号をそれぞれ生成して発光素子を駆動する光源駆動部とを備える。光源駆動部は、複数の発光素子のうち定格光量が低い発光素子を、光源部からの出射光量を補償するための駆動信号で駆動するようにした。光源部が、第一の定格光量の高輝度発光素子LED(L)と、それより低い第二の定格光量の低輝度発光素子LED(S)とを有する場合、高輝度発光素子の出射光量が低下する際に、光源駆動部は、高輝度発光素子の光量低下量を求め、この光量低下量を補償する光量を低輝度発光素子から出射させる。【選択図】図1
