Patent ID: 8684537
Filing Date: 2014-04-01
Classification: G03B,H04N

Abstract:
1. A light source unit comprising: an excitation light shining device for emitting excitation light; a luminescent wheel provided with a luminescent material on at least a whole circumferential area through which the excitation light passes, the luminescent material receiving the light emitted from the excitation light shining device as excitation light to emit a luminescent light ray of a predetermined wavelength band; two types of light source devices which emit light rays of different wavelength bands from that of the light ray emitted from the luminescent wheel; a light source optical system for collecting the luminescent light ray emitted from the luminescent wheel and the light rays emitted from the two types of light source devices onto a predetermined plane; and a light source control device for time sharing controlling the excitation light shining device and the two types of light source devices and controlling a rotation of the luminescent wheel; wherein the light source control device controls, with time sharing, the excitation light shining device and the two types of light source devices and controls a rotating speed of the luminescent wheel so that a period of time required for the excitation light shining device and the two types of light source devices to be turned on once and sequentially does not become an integral multiple of a period of time required for the luminescent wheel to rotate one rotation.