Patent ID: 8369005

Claim:
A fiber light source comprising: an exciting light source to emit exciting light; and an optical fiber to guide the exciting light, wherein: the optical fiber comprising a first optical fiber and a second optical fiber separated from each other, the second optical fiber containing phosphors that emit fluorescence in accordance with the application of exciting light, and including a high reflection film covering an outer surface thereof, the content of the phosphors and the type of the phosphors being controlled to provide a desired optical output characteristic; the first and second optical fibers are detachably attached through a connector such that the second optical fiber can be changed to vary at least one of a content and type of phosphors therein; and the phosphors include different types of phosphors that are excited by the exciting light to emit fluorescence components with different optical spectra, and the different types of phosphors are respectively contained in different regions of the second optical fiber in the longitudinal direction.