Patent ID: 9022577
Filing Date: 2015-05-05
Classification: G03B,H04N

Abstract:
1. A light source device comprising: an excitation light source configured to emit and stop an excitation light with a predetermined timing; a fluorescent wheel configured to rotate, the fluorescent wheel including a fluorescent material applied thereon for emitting a fluorescent light in a predetermined wavelength range when irradiated with the excitation light; and an irradiation spot changing unit configured to change a spot on the fluorescent material irradiated with the excitation light, wherein: the excitation light source emits the excitation light with a predetermined period, and if a time duration during which an emission light intensity of the fluorescent light is at least lower than a predetermined value is detected in an emission duration time of the fluorescent light in the predetermined period, the irradiation spot changing unit controls an emission timing of the excitation light source so that a region of the fluorescent material corresponding to the time duration is not irradiated with the excitation light.