PROBLEM TO BE SOLVED: To provide an illuminating device which can be emitted while suppressing color unevenness and brightness unevenness contained in incident light, and which is preferably used for an endoscope, for example. An illumination device (10) includes a laser light source (12) that emits laser light (L), a wavelength conversion unit (14) that converts the laser light (L) into converted light of different wavelengths, and a first light that guides the converted light while mixing. The guide 16 and the second light guide 18 that guides the light mixed by the first light guide 16 are provided. [Selection diagram] Figure 1【課題】入射した光に含まれる色ムラ及び輝度ムラを抑制して出射できる、例えば内視鏡に好適に用いられる照明装置を提供する。【解決手段】照明装置１０は、レーザ光Ｌを出射するレーザ光源１２と、レーザ光Ｌを異なる波長の変換光に変換する波長変換部１４と、変換光を混合しながら導光する第１ライトガイド１６と、第１ライトガイド１６で混合された光を導光する第２ライトガイド１８とを備える。【選択図】図１
