PROBLEM TO BE SOLVED: To provide an endoscope apparatus having a small light source device capable of changing color of emitting light.SOLUTION: The light sources device 10 includes a first semiconductor laser 22A, a second semiconductor laser 22B, and a phosphor unit 62. The first semiconductor laser 22A emits blue light having a wavelength of 460 nm, and the second semiconductor laser 22B emits blue-violet light having a wavelength of 415 nm. Whereas the phosphor unit 62 emits light having a wavelength of about 530 nm by absorbing the blue color emitted from the first semiconductor laser 22A, the blue-violet light emitted from the second semiconductor laser 22B is almost transmitted through the phosphor unit 62.
