This light source device includes one light emission unit from which light is emitted, plural light source units, a photo coupler, and a control unit. The plural light source units output outgoing lights with mutually differing wavelengths. The photo coupler connects the light emission unit and plural light source units. The control unit controls the plural light source units via a driver. Each of the plural light source units includes a light emitting element and a wavelength conversion unit. The wavelength conversion unit converts the wavelength of light output from the light emitting element, thus generating the outgoing light.本發明係一種光源裝置，其課題為提供可從同一的光軸射出複數之波長的射出光，且可高速將射出光進行變調之光源裝置。解決手段為此光源裝置係具備射出光線之一個之光射出部(300)，複數之光源單元(100)，光耦合器(200)，及控制部(420)。複數之光源單元(100)係輸出相互不同波長之射出光。光耦合器(200)係連接光射出部(300)與複數之光源單元(100)。控制部(420)係藉由驅動器(410)而控制複數之光源單元(100)。並且，複數之光源單元(100)係各具備發光元件(110)及波長變換部(140)。波長變換部(140)係將從發光元件所輸出的光線進行波長變換而生成射出光。
