Light source apparatus and endoscope system

摘要

A fluorescent type of green light source (36) of a semiconductor in a light source apparatus (13) for an endoscope (11) includes a blue excitation light source device (44) and green emitting phosphor (47). The blue excitation light source device (44) emits blue excitation light LBe. The green emitting phosphor (47) is excited by the blue excitation light LBe, and emits green fluorescence LGf. A dichroic filter in a dichroic mirror (80) cuts off the blue excitation light LBe from an emission spectrum of mixed light of the blue excitation light LBe and green fluorescence LGf from the fluorescent type of green light source (36). Thus, illumination light with the emission spectrum of a target can be stably supplied without influence of the blue excitation light LBe to a light amount of blue light LB from a blue light source (35) of a semiconductor.