[Problem] To provide an imaging device for capturing infrared images capable of accurately counting, even by computer, etc., "minute particles that have not been finely pulverized or mashed" by irradiating infrared light during image capture on to an artificial food mass that is the imaging subject as well as capturing using the imaging device an image of infrared light that passes through the artificial food mass. [Solution] An imaging device for capturing images of an artificial food mass, which is the imaging subject and contains light-permeable fine particles, on to a substrate with infrared light blocking properties. Said imaging device comprises an image capture means for capturing images of the imaging subject from one direction and an infrared light source that irradiates infrared light on to the imaging subject from another side of the imaging subject. The image capture means has a visible light elimination means to prevent visible light being received and captures images of the imaging subject while infrared light is being irradiated on the imaging subject by the infrared light source.Linvention a pour but de fournir un dispositif de formation dimages destiné à acquérir des images infrarouges capables de compter avec précision, même à laide dun ordinateur, etc., "de minuscules particules nayant pas été finement pulvérisées ou broyées" par projection de lumière infrarouge pendant lacquisition dimages sur une masse daliment artificiel qui constitue le sujet de formation dimages et en acquérant à laide du dispositif de formation dimage une image de la lumière infrarouge passant à travers la masse daliment artificiel. Ce but est atteint par un dispositif de formation dimages destiné à acquérir des images dune masse daliment artificiel, qui constitue le sujet de formation dimages et contient de fines particules perméables à la lumière, sur un substrat ayant des propriétés dopacité à la lumière infrarouge. Ledit dispositif de formation dimages comprend un moyen
