Display device having a can be placed on a user's head fixture

There is provided a display device comprising one can be placed on a user's head holding device (2) one on the holding device (2) fixed to the image forming module (8, 9), which forms an image, and one at the holding device (2) fixed to the imaging optical system (5, 6) having a lens (5) having a curved front face (14) and a curved rear surface (13) and (the image formed in the mounted upside down state of the holding device 2) so maps that they can discharge in superposition with the environment, the user, wherein the image forming module (8, 9), light coming through an entry section (15) in a light channel (17) in the spectacle lens (5) is coupled, in the light channel (17) out to an exit portion (16) and the exit section (16) from the lens (5) is coupled out, and wherein the light conduit (17) in the region of the front and rear sides (14, 13) each comprise a Fresnel structure (18, 19) having a plurality of facets (20, 21), where the in light channel (17) reflects guided light and is aligned parallel to one another.