Patent ID: 8444273

Claim:
A light source device comprising: a first light source configured to emit light in a first wavelength band; a light-source light generation section configured to generate light-source light of each of a plurality of colors by time division by using light-emission of the first light source; a second light source configured to generate light-source light of a second wavelength band different from the first wavelength band; and a light source control section configured to cause each of the light-source light generation section and the second light source to generate light-source light in one period, and to control a drive timing of each of the first and second light sources to adjust a light-emission timing of light-source light generated by each of the light-source light generation section and the second light source; wherein the light-source light generation section comprises a color wheel configured to generate light-source light of a third wavelength band different from the first and second wavelength bands by using light-emission of the first light source; and wherein the light source control section is configured to control at least one light-emission period of the second light source to be a period that includes a phase corresponding to a timing of a border of a region of the color wheel for generation of the light-source light of the first wavelength band and a region of the color wheel for generation of the light-source light of the third wavelength band, while switching colors by time division in one period by the color wheel, and to control light-emission of the first light source to be stopped in the light-emission period of the second light source.