According to one embodiment, a display device includes a display unit, an optical unit, and a reflector. The display unit includes a plurality of pixels arranged in a first plane. The display unit emits light including image information. At least a portion of the light emitted by the display unit is incident on the optical unit. The optical unit includes a first optical element. A travel direction of the at least the portion of the light is modified by the first optical element. The reflector reflects the at least the portion of the light modified by the first optical element. A perpendicular direction perpendicular to the first plane is non-parallel to an optical axis of the first optical element.