Imaging device

The present invention makes it easier to verify the arrival of a catheter, etc., to a desired position in a subject body. This imaging device includes a tube, a light-emitting unit disposed on the tube, a driver for switching between emission and non-emission of light from the light-emitting unit, a camera for imaging the subject body, a controller for controlling the operation of the driver and generating a display image using an image obtained from the camera, and a display for displaying the display image. The controller generates a light position image corresponding to the light from the light-emitting unit on the basis of the difference between a first image obtained from the camera in correspondence with the emission of light from the light-emitting unit and a second image obtained from the camera in correspondence with the non-emission of light from the light-emitting unit, and overlaps the light position image in a visually recognizable color onto an external view image of the subject body obtained fr