Display device, virtual image display device, and movable body

A display device comprising:

• a display unit which includes a display surface that emits display light, and emits central display light in an emission direction that is non-perpendicular to the display surface;
• and
• a prism which is provided on the display surface, includes an incidence surface on which the display light is incident and an emitting surface which emits the display light, and has a thickness which is gradually increased in the emission direction, wherein
• in the prism, a vertex of the emitting surface is positioned to be deviated from an immediately above region, which is located immediately above the incidence surface, toward the emission direction side,
• wherein the prism forms a protruding portion which is further expanded toward the emission direction side with respect to a virtual side surface, which connects an end portion of the incidence surface at the emission direction side and the vertex,
• wherein the protruding portion is formed by surfaces and corners, and
• wherein, of the corners, a vertex angle formed at the vertex is more obtuse than an angle formed by the virtual side surface and the emitting surface.