PROBLEM TO BE SOLVED: To provide a light source device more compact and inexpensive than a conventional light source device and an endoscope system including a light source device compact and inexpensive.SOLUTION: A light source device 14 includes in a light source part 20: a first light source 71 emitting blue light； a second light source 72 emitting wide-band green light containing a red component other than a green component； and an optical filter 73 adjusting an amount of light of the wide-band green light for each wavelength. The optical filter 73 has a characteristic that a reflection rate of the green component is smaller than a reflection rate of the red component when reflecting wide-band green light or has a characteristic that a transmission rate of the green component is smaller than a transmission rate of the red component when transmitting the wide-band green light.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】従来よりもコンパクトかつ安価な光源装置、及び、コンパクトかつ安価な光源装置を有する内視鏡システムを提供する。【解決手段】光源装置１４は、光源部２０に、青色光を発光する第１光源７１と、緑色成分の他に赤色成分を含む広帯域な緑色光を発光する第２光源７２と、広帯域な緑色光の光量を波長ごとに調節する光学フィルタ７３と、を備える。光学フィルタ７３は広帯域な緑色光を反射する場合に緑色成分の反射率が赤色成分の反射率よりも小さい特性を有し、または、広帯域な緑色光を透過する場合に緑色成分の透過率が赤色成分の透過率よりも小さい特性を有する。【選択図】図４
