[Object] To provide an imaging device for capturing an infrared image, the device which can accurately count the number of "microparticles not finely crushed or ground" even by a computer or the like, by emitting infrared light on an artificial food mass that is as an imaging object during image capture, and by capturing an image of the infrared light passing through the artificial food mass by the imaging device.[Solution] An imaging device for capturing an image of an imaging object that is an artificial food mass, in which a light-transmissive microparticle is contained in a base material having a property of blocking infrared light, includes imaging means for capturing the image of the imaging object from one side and an infrared light source that emits infrared light on the imaging object from the other side of the imaging object. The imaging means includes visible-light removing means for not receiving visible light. The imaging means captures the image of the imaging object while the infrared light source emits the infrared light on the imaging object.
