Transparent screen sheet, transparent screen, and image display system

A transparent screen sheet that displays images projected from a front side of the transparent screen sheet to a user on the front side of the transparent screen sheet, and causes the user on the front side of the transparent screen sheet to view a rear background behind the rear side of the transparent screen sheet, the transparent screen sheet comprising:

• an image display layer configured to display the images;
• and
• a resin film that holds the image display layer,
• wherein a difference between a maximum value and a minimum value of retardations of the resin film measured by irradiating a main surface of the resin film with a light having a wavelength of 460 nm in a direction orthogonal to the main surface, within a region on the main surface of the resin film that overlaps with the image display layer, is less than or equal to one fourth of the wavelength of the light,
• wherein the image display layer comprises a light transmission diffusion reflection layer configured to diffuse and reflect to the front side a light of the images projected from the front side, to display the images to the user on the front side, and
• wherein the image display layer comprises an irregular layer, the light transmission diffusion reflection layer, and a coating layer, in this order.