An object of the present invention is to reduce unevenness of light after multiplexing while suppressing a decrease in light guide efficiency. A light source unit that emits a plurality of types of light, and an optical waveguide that multiplexes the plurality of types of light and guides the combined light to an image acquisition device that acquires an image of an object to be imaged. Part, and an incident part that makes the plurality of types of light incident on the optical waveguide part, and on the incident surface of the plurality of types of light in the incident part, a predetermined position of the incident part is set as a reference position, and the reference A light source device is provided in which a maximum separation distance from a position to an incident position of each of the plurality of types of light incident on the incident unit is equal to each other. [Selection diagram] FIG.【課題】導光効率の低下を抑制しつつ合波後の光のムラを低減させることを可能にする。【解決手段】複数種類の光を射出する光源部と、前記複数種類の光を合波した上で、合波後の光を被撮像体の画像を取得する画像取得装置に導光する光導波路部と、前記光導波路部へ前記複数種類の光を入射させる入射部と、を備え、前記入射部における前記複数種類の光の入射面では、前記入射部の所定位置を基準位置として、当該基準位置から前記入射部に入射した前記複数種類の光それぞれの入射位置までの最大離隔距離が互いに等しい、光源装置が提供される。【選択図】図８
