Endoscope light source system

An endoscope light source system comprising:

• a plurality of light sources each configured to emit light-source light;
• a light coupler configured to couple the light-source light emitted from each of the plurality of light sources;
• an insertion section provided in an endoscope and optically connected to the plurality of light sources, the insertion section being configured to be inserted in a lumen;
• a light guide path optically connected to the light coupler, the light guide path being configured to guide the light-source light emitted from each of the plurality of light sources to the insertion section;
• an auxiliary light guide path configured to guide auxiliary light from an auxiliary light source separate from the plurality of light sources;
• a light connector provided on the light guide path, the light connector being configured to optically connect the auxiliary light guide path to the light guide path such that the auxiliary light is guided to the light guide path from the auxiliary light guide path;
• and
• a distal end of the insertion section optically connected to the light guide path, the distal end being configured to emit at least one of the light-source light guided by the light guide path and the auxiliary light guided by the light guide path, to an outside of the endoscope as illumination light, and to irradiate the illumination light to an illuminated part;
• wherein the light-source light and the auxiliary light enter the endoscope at different inlets and combine at the light connector within the endoscope.