An optical imaging device of the present invention comprises: a light source device a light guide and illumination lens, provided in an insertion section that can be inserted into a body cavity, for constituting an illumination light path for guiding an illumination light from the light source device to a subject an objective lens for receiving return lights from the subject an image capturing section for acquiring a visible light band image from the return light an excitation light cut filter and image capturing section for acquiring a fluorescent image from the return lights and an illumination light filter, provided on the illumination light path, for decreasing light in a band overlapping with the band of light of which image is captured by the image capturing section from the illumination light incident on.
