PROBLEM TO BE SOLVED: To provide a light source system capable of being accurately and easily assembled irrespectively of types of irradiation modules.SOLUTION: A light source system 10 comprises: a repeating adapter 100 mechanically connected to a first light source module 20a, a first irradiation module 60a, a second light source module 20b, and a second irradiation module 60b a first connection mechanism connecting the first light source module 20a to the repeating adapter 100 and a second connection mechanism connecting the second light source module 20b to the repeating adapter 100. The first irradiation module 60a and the second irradiation module 60b are interchangeably connected to the repeating adapter 100 on the same surface of the repeating adapter 100.SELECTED DRAWING: Figure 1
