An image display device which is arranged to: direct light of a first image and light of a second image toward a translucent member, wherein said translucent member is arranged to reflect the light of the first image and the light of the second image toward a visible area; and wherein the image display device is further arranged to: display a first virtual image corresponding to the first image and a second virtual image corresponding to the second image at positions visible through the translucent member when viewed from the visible area, the image display device comprising: a display unit configured to display the first image and the second image; and a projection optical system that directs the light of the first image and the light of the second image toward the translucent member, wherein the display unit displays the first image and the second image at different display areas (DA1, DA2) on the same plane, wherein the projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that the first virtual image and the second virtual image are formed at positions having different distances from a viewing point within the visible area; wherein the projection optical system includes a first optical path from the display area of the first image on the display unit to an incident area of the translucent member to where the light of the first image reaches, and a second optical path from the display area of the second image on the display unit to an incident area of the translucent member to where the light of the second image reaches; and either wherein the projection optical system includes at least one of a first planar mirror (121, 121A, 121B, 121C, 121D) provided only in the first optical path, and a second planar mirror (122, 122A, 122D) provided only in the second optical path, the first and / or second planar mirror setting a different optical path length of the first optical path to the second optical path; or wherein the projection optical system includes a first optical system configured to form the first optical path and a second optical system configured to form the second optical path, and wherein the projection optical system includes at least one of a first curved mirror (141, 141D) provided only in the first optical path and configured to concentrate or diverge reflected light, and a second curved mirror (142, 142D) provided only in the second optical path and configured to concentrate or diverge reflected light, the first and /or second curved mirror creating a different synthetic focal length of the first optical system to the second optical system. a display unit configured to display the first image and the second image; and a projection optical system that directs the light of the first image and the light of the second image toward the translucent member, wherein the display unit displays the first image and the second image at different display areas (DA1, DA2) on the same plane, wherein the projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that the first virtual image and the second virtual image are formed at positions having different distances from a viewing point within the visible area; wherein the projection optical system includes a first optical path from the display area of the first image on the display unit to an incident area of the translucent member to where the light of the first image reaches, and a second optical path from the display area of the second image on the display unit to an incident area of the translucent member to where the light of the second image reaches; and either wherein the projection optical system includes at least one of a first planar mirror (121, 121A, 121B, 121C, 121D) provided only in the first optical path, and a second planar mirror (122, 122A, 122D) provided only in the second optical path, the first and / or second planar mirror setting a different optical path length of the first optical path to the second optical path; or wherein the projection optical system includes a first optical system configured to form the first optical path and a second optical system configured to form the second optical path, and wherein the projection optical system includes at least one of a first curved mirror (141, 141D) provided only in the first optical path and configured to concentrate or diverge reflected light, and a second curved mirror (142, 142D) provided only in the second optical path and configured to concentrate or diverge reflected light, the first and /or second curved mirror creating a different synthetic focal length of the first optical system to the second optical system.