Display device and moving body carrying display device

A display device comprising:

• a screen having a display plane inclined with respect to a reference plane;
• a driver configured to move the screen between a first position and a second position in a movement direction orthogonal to the reference plane;
• an irradiator including an imaging optical system, the irradiator being configured to cause the imaging optical system to irradiate the screen with light to scan the display plane of the screen to form an image on the display plane;
• and
• a projector configured to receive, as incident light, light passing through the screen and outputted from the screen in the movement direction, the projector configured to irradiate a reflective member with the incident light to allow the reflective member to reflect the incident light, and the projector configured to form a virtual image corresponding to the image in a target space facing in a direction opposite to a reflection direction of the incident light,
• wherein a locus of a focal position of the imaging optical system when the irradiator wholly scans the display plane is within a range between the display plane of the screen at the first position and the display plane of the screen at the second position.