Display device

A display device comprising:

• a display module which emits display light;
• an optical element which transmits or reflects the display light;
• and
• a reflective element which retroreflects the display light reflected from the optical element,
• the reflective element comprising:
• a first reflector plate including
• a first side of the first reflector plate,
• a second side of the first reflector plate,
• a first retroreflective surface with retroreflective properties which is bent in a convex shape toward the optical element between the first side and the second side;
• and
• a first end portion of the first retroreflective surface along the first side, and
• a second end portion of the first retroreflective surface along the second side;
• and
• a second reflector plate including
• a third side of the second reflector plate,
• a fourth side of the second reflector plate,
• a second retroreflective surface with retroreflective properties which is bent in a convex shape toward the optical element between the third side and the fourth side,
• a third end portion of the second retroreflective surface along the third side, and
• a fourth end portion of the second retroreflective surface along the fourth side,
• wherein
• a distance between the second end portion and the optical element is greater than a distance between the first end portion and the optical element,
• a distance between the fourth end portion and the optical element is greater than a distance between the third end portion and the optical element,
• the first retroreflective surface forms a single convex portion, without any concave portion between the first side and the second side,
• the second retroreflective surface forms a single convex portion without any concave portion between the third side and the fourth side, and
• the second end portion of the first retroreflective surface faces the third end portion of the second retroreflective surface.

A display device comprising:

• a display module which emits display light;
• an optical element which transmits or reflects the display light;
• and
• a reflective element including a first end extending in a first direction, a second end extending in the first direction, an inner surface which retroreflects the display light reflected from the optical element between the first end and the second end, a distance between the first end and the display module being greater than a distance between the second end and the display module, the inner surface being concave with respect to the display module,
• the reflective element comprising:
• a first reflector plate including a first retroreflective surface with retroreflective properties, a non- retroreflective surface on an opposite side to the first retroreflective surface, a first end portion, and a second end portion, the first end portion and the second end portion being on both sides of the first retroreflective surface in the first direction;
• a second reflector plate including a third end portion, which overlaps the first end portion and is more separated from the display module than the first end portion, and a second retroreflective surface with retroreflective properties;
• and
• a third reflector plate including a fourth end portion, which overlaps the second end portion and is more separated from the display module than the second end portion, and a third retroreflective surface with retroreflective properties,
• wherein the second reflector, the first reflector, and the third reflector are arranged in the first direction in this order,
• the first retroreflective surface, the second retroreflective surface, and the third retroreflective surface form the inner surface,
• the first reflector is closer to the optical element,
• the second reflector and the third reflector are separated from the optical element, and
• the third end portion of the second retroreflective surface and the fourth end portion of the third retroreflective surface face the non-retroreflective surface of the first reflector plate.