Patent ID: 8647372

Claim:
A composite light source apparatus for phototherapy including a plurality of light sources for emitting light beams of a predetermined spectral range for the purpose of phototherapy, the composite light source apparatus comprising: a short-wavelength light source for emitting a main light beam in a short-wavelength range of spectrum; a long-wavelength light source for emitting a main light beam in a long-wavelength range of spectrum; a mirror configured to reflect a light beam from a light source selected from the light sources and disposed in front of an incidence plane of a light guide so as to provide a light beam reflected by the mirror; and the light guide for transferring the light beams emitted from the light sources and incident on a core of the incidence plane thereof to a to-be-treated region of a patient, wherein the light sources are arranged such that the maximum incidence angle of the light sources is equal to or smaller than an acceptance angle of the light guide, and simultaneously the spots of the light beams emitted from the light sources are all included within the core of the incidence plane of the light guide.