The image exposure device includes an image display device that has a plurality of pixels and radiates light according to a display image represented by the plurality of pixels; a support portion that supports a photosensitive recording medium for recording a recorded image according to the display image in a state in which an exposure surface of the photosensitive recording medium faces the image display device; a louver film that is provided between the image display device and the support portion, and limits an angle of the light radiated from the image display device to the photosensitive recording medium; and a controller that controls the image display device to display the display image in which an image quality of an input image represented by input image data is deteriorated by emphasizing a density difference of a high-frequency component of the input image.