An image capturing device includes: at least two field limiting parts which limit a field of view to a dot-like section to define a passage of light; a light sensor which detects light passing through the field limiting parts; a scanning device which moves a scanning spot defined by the dot-like section in two-dimensional directions within a scanning area of an image to be captured; and a control device which controls movements of the scanning spot by the scanning device while receiving detection signals from the light sensor.