[Problem] To enable a fluorescence image corresponding to a fluorescent material being used to be formed in a more suitable mode, even in a situation where a plurality of types of fluorescent materials are selectively used. [Solution] Provided is an imaging system that comprises: a light source device that irradiates light containing wavelength band components of at least some excitation wavelengths onto each of the plurality of types of fluorescent materials including a first fluorescent material that emits fluorescence belonging to a near infrared wavelength band and a second fluorescent material that emits fluorescence belonging to a visible wavelength band； an optical system unit； and an imaging device. The imaging device comprises: a branching optical system that includes a dichroic film； a first imaging element that images light belonging to the near infrared wavelength band that has been separated by the dichroic film； and a second imaging element that images at least a portion of light belonging to the visible wavelength band that has been separated by the dichroic film. A fluorescence image of fluorescence emitted by the first fluorescent material is formed by the first imaging element, and a fluorescence image of fluorescence emitted by the second fluorescent material is formed by the second imaging element.Le problème décrit par la présente invention est de permettre à une image fluorescente correspondant à un matériau fluorescent en utilisation d'être formée selon un mode plus approprié, même dans une situation où une pluralité de types de matériaux fluorescents sont sélectivement utilisés. La solution selon l'invention porte sur un système d'imagerie qui comprend : un dispositif source de lumière qui rayonne de la lumière contenant des composants de longueur d'onde d'au moins certaines longueurs d'ondes d'excitation sur chaque type parmi la pluralité des types de matériaux fluorescents, y compris un premier matériau fluorescent qui émet une fluorescence
